diff --git a/.github/workflows/_test.yml b/.github/workflows/_test.yml
index c2d6d80d2..afc4c91c6 100644
--- a/.github/workflows/_test.yml
+++ b/.github/workflows/_test.yml
@@ -21,7 +21,11 @@ jobs:
           - "3.10"
           - "3.11"
           - "3.12"
-    name: "test #${{ matrix.python-version }}"
+        core-version:
+          - ">=0.3.0.dev1,<0.4.0"
+          - "latest"
+
+    name: "test #${{ matrix.python-version }} (langchain-core: ${{ matrix.core-version }})"
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }} + Poetry ${{ env.POETRY_VERSION }}
@@ -35,7 +39,11 @@ jobs:
       - name: Install dependencies
         shell: bash
         working-directory: ${{ inputs.working-directory }}
-        run: poetry install --with dev
+        run: |
+          poetry install --with dev
+          if [ "${{ matrix.core-version }}" != "latest" ]; then
+            poetry run pip install "langchain-core${{ matrix.core-version }}"
+          fi
 
       - name: Run core tests
         shell: bash
diff --git a/examples/llm-compiler/math_tools.py b/examples/llm-compiler/math_tools.py
index 928153dab..b9795d3e5 100644
--- a/examples/llm-compiler/math_tools.py
+++ b/examples/llm-compiler/math_tools.py
@@ -6,10 +6,10 @@
 from langchain.chains.openai_functions import create_structured_output_runnable
 from langchain_core.messages import SystemMessage
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
-from langchain_core.pydantic_v1 import BaseModel, Field
 from langchain_core.runnables import RunnableConfig
 from langchain_core.tools import StructuredTool
 from langchain_openai import ChatOpenAI
+from pydantic import BaseModel, Field
 
 _MATH_DESCRIPTION = (
     "math(problem: str, context: Optional[list[str]]) -> float:\n"
diff --git a/libs/checkpoint/poetry.lock b/libs/checkpoint/poetry.lock
index ce3055a79..f8e3cd636 100644
--- a/libs/checkpoint/poetry.lock
+++ b/libs/checkpoint/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
 
 [[package]]
 name = "annotated-types"
@@ -227,13 +227,13 @@ files = [
 
 [[package]]
 name = "langchain-core"
-version = "0.2.24"
+version = "0.2.38"
 description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.8.1"
 files = [
-    {file = "langchain_core-0.2.24-py3-none-any.whl", hash = "sha256:9444fc082d21ef075d925590a684a73fe1f9688a3d90087580ec929751be55e7"},
-    {file = "langchain_core-0.2.24.tar.gz", hash = "sha256:f2e3fa200b124e8c45d270da9bf836bed9c09532612c96ff3225e59b9a232f5a"},
+    {file = "langchain_core-0.2.38-py3-none-any.whl", hash = "sha256:8a5729bc7e68b4af089af20eff44fe4e7ca21d0e0c87ec21cef7621981fd1a4a"},
+    {file = "langchain_core-0.2.38.tar.gz", hash = "sha256:eb69dbedd344f2ee1f15bcea6c71a05884b867588fadc42d04632e727c1238f3"},
 ]
 
 [package.dependencies]
@@ -246,6 +246,7 @@ pydantic = [
 ]
 PyYAML = ">=5.3"
 tenacity = ">=8.1.0,<8.4.0 || >8.4.0,<9.0.0"
+typing-extensions = ">=4.7"
 
 [[package]]
 name = "langsmith"
@@ -850,4 +851,4 @@ watchmedo = ["PyYAML (>=3.10)"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9.0,<4.0"
-content-hash = "de79db3dc7701542739b3417e9d3f02c3b41167719603ee4d08b92e23b7443ee"
+content-hash = "d4c13800471766fa9e2d11d2f1092f02fbf28cc507189aeea8a3d5b297286068"
diff --git a/libs/checkpoint/pyproject.toml b/libs/checkpoint/pyproject.toml
index d7351e33c..d682f2932 100644
--- a/libs/checkpoint/pyproject.toml
+++ b/libs/checkpoint/pyproject.toml
@@ -10,7 +10,7 @@ packages = [{ include = "langgraph" }]
 
 [tool.poetry.dependencies]
 python = "^3.9.0,<4.0"
-langchain-core = ">=0.2.22,<0.3"
+langchain-core = ">=0.2.38,<0.4"
 
 [tool.poetry.group.dev.dependencies]
 ruff = "^0.6.2"
diff --git a/libs/checkpoint/tests/test_jsonplus.py b/libs/checkpoint/tests/test_jsonplus.py
index 5e413b09f..0ead0ed53 100644
--- a/libs/checkpoint/tests/test_jsonplus.py
+++ b/libs/checkpoint/tests/test_jsonplus.py
@@ -10,9 +10,9 @@
 from ipaddress import IPv4Address
 
 import dataclasses_json
-from langchain_core.pydantic_v1 import BaseModel as LcBaseModel
 from langchain_core.runnables import RunnableMap
 from pydantic import BaseModel
+from pydantic.v1 import BaseModel as BaseModelV1
 from zoneinfo import ZoneInfo
 
 from langgraph.checkpoint.serde.jsonplus import JsonPlusSerializer
@@ -23,7 +23,7 @@ class MyPydantic(BaseModel):
     bar: int
 
 
-class MyFunnyPydantic(LcBaseModel):
+class MyFunnyPydantic(BaseModelV1):
     foo: str
     bar: int
 
diff --git a/libs/cli/examples/graphs/storm.py b/libs/cli/examples/graphs/storm.py
index a1317bc51..dbc38ab95 100644
--- a/libs/cli/examples/graphs/storm.py
+++ b/libs/cli/examples/graphs/storm.py
@@ -14,12 +14,12 @@
 )
 from langchain_core.output_parsers import StrOutputParser
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
-from langchain_core.pydantic_v1 import BaseModel, Field
 from langchain_core.runnables import RunnableConfig, RunnableLambda
 from langchain_core.runnables import chain as as_runnable
 from langchain_core.tools import tool
 from langchain_openai import ChatOpenAI, OpenAIEmbeddings
 from langgraph.graph import END, StateGraph
+from pydantic import BaseModel, Field
 from typing_extensions import TypedDict
 
 fast_llm = ChatOpenAI(model="gpt-3.5-turbo")
diff --git a/libs/langgraph/langgraph/graph/state.py b/libs/langgraph/langgraph/graph/state.py
index 644ae7adb..baec31cdd 100644
--- a/libs/langgraph/langgraph/graph/state.py
+++ b/libs/langgraph/langgraph/graph/state.py
@@ -21,6 +21,7 @@
 from langchain_core.runnables.base import RunnableLike
 from langchain_core.runnables.utils import create_model
 from pydantic import BaseModel
+from pydantic.v1 import BaseModel as BaseModelV1
 
 from langgraph.channels.base import BaseChannel
 from langgraph.channels.binop import BinaryOperatorAggregate
@@ -473,10 +474,8 @@ class CompiledStateGraph(CompiledGraph):
     def get_input_schema(
         self, config: Optional[RunnableConfig] = None
     ) -> type[BaseModel]:
-        from pydantic import BaseModel as BaseModelP
-
         if isclass(self.builder.input) and issubclass(
-            self.builder.input, (BaseModel, BaseModelP)
+            self.builder.input, (BaseModel, BaseModelV1)
         ):
             return self.builder.input
         else:
@@ -508,10 +507,8 @@ def get_input_schema(
     def get_output_schema(
         self, config: Optional[RunnableConfig] = None
     ) -> type[BaseModel]:
-        from pydantic import BaseModel as BaseModelP
-
-        if isclass(self.builder.input) and issubclass(
-            self.builder.output, (BaseModel, BaseModelP)
+        if isclass(self.builder.output) and issubclass(
+            self.builder.output, (BaseModel, BaseModelV1)
         ):
             return self.builder.output
 
diff --git a/libs/langgraph/langgraph/prebuilt/tool_validator.py b/libs/langgraph/langgraph/prebuilt/tool_validator.py
index 95c84a0a5..2222e7f2f 100644
--- a/libs/langgraph/langgraph/prebuilt/tool_validator.py
+++ b/libs/langgraph/langgraph/prebuilt/tool_validator.py
@@ -24,20 +24,22 @@
     ToolCall,
     ToolMessage,
 )
-from langchain_core.pydantic_v1 import BaseModel, ValidationError
 from langchain_core.runnables import (
     RunnableConfig,
 )
 from langchain_core.runnables.config import get_executor_for_config
 from langchain_core.tools import BaseTool, create_schema_from_function
-from pydantic import BaseModel as BaseModelV2
-from pydantic import ValidationError as ValidationErrorV2
+from pydantic import BaseModel, ValidationError
+from pydantic.v1 import BaseModel as BaseModelV1
+from pydantic.v1 import ValidationError as ValidationErrorV1
 
 from langgraph.utils.runnable import RunnableCallable
 
 
 def _default_format_error(
-    error: BaseException, call: ToolCall, schema: Type[BaseModel]
+    error: BaseException,
+    call: ToolCall,
+    schema: Union[Type[BaseModel], Type[BaseModelV1]],
 ) -> str:
     """Default error formatting function."""
     return f"{repr(error)}\n\nRespond after fixing all validation errors."
@@ -75,7 +77,7 @@ class ValidationNode(RunnableCallable):
         >>> from typing import Literal, Annotated, TypedDict
         ...
         >>> from langchain_anthropic import ChatAnthropic
-        >>> from langchain_core.pydantic_v1 import BaseModel, validator
+        >>> from pydantic import BaseModel, validator
         ...
         >>> from langgraph.graph import END, START, StateGraph
         >>> from langgraph.prebuilt import ValidationNode
@@ -176,7 +178,7 @@ def __init__(
                     )
                 self.schemas_by_name[schema.name] = schema.args_schema
             elif isinstance(schema, type) and issubclass(
-                schema, (BaseModel, BaseModelV2)
+                schema, (BaseModel, BaseModelV1)
             ):
                 self.schemas_by_name[schema.__name__] = cast(Type[BaseModel], schema)
             elif callable(schema):
@@ -212,13 +214,22 @@ def _func(
         def run_one(call: ToolCall):
             schema = self.schemas_by_name[call["name"]]
             try:
-                output = schema.validate(call["args"])
+                if issubclass(schema, BaseModel):
+                    output = schema.model_validate(call["args"])
+                    content = output.model_dump_json()
+                elif issubclass(schema, BaseModelV1):
+                    output = schema.validate(call["args"])
+                    content = output.json()
+                else:
+                    raise ValueError(
+                        f"Unsupported schema type: {type(schema)}. Expected BaseModel or BaseModelV1."
+                    )
                 return ToolMessage(
-                    content=output.json(),
+                    content=content,
                     name=call["name"],
                     tool_call_id=cast(str, call["id"]),
                 )
-            except (ValidationError, ValidationErrorV2) as e:
+            except (ValidationError, ValidationErrorV1) as e:
                 return ToolMessage(
                     content=self._format_error(e, call, schema),
                     name=call["name"],
diff --git a/libs/langgraph/langgraph/utils/runnable.py b/libs/langgraph/langgraph/utils/runnable.py
index 3f3395e25..c59bd0b18 100644
--- a/libs/langgraph/langgraph/utils/runnable.py
+++ b/libs/langgraph/langgraph/utils/runnable.py
@@ -59,19 +59,19 @@ def __init__(
         recurse: bool = True,
         **kwargs: Any,
     ) -> None:
-        if name is not None:
-            self.name = name
-        elif func:
-            try:
-                if func.__name__ != "<lambda>":
-                    self.name = func.__name__
-            except AttributeError:
-                pass
-        elif afunc:
-            try:
-                self.name = afunc.__name__
-            except AttributeError:
-                pass
+        self.name = name
+        if self.name is None:
+            if func:
+                try:
+                    if func.__name__ != "<lambda>":
+                        self.name = func.__name__
+                except AttributeError:
+                    pass
+            elif afunc:
+                try:
+                    self.name = afunc.__name__
+                except AttributeError:
+                    pass
         self.func = func
         if func is not None:
             self.func_accepts_config = accepts_config(func)
diff --git a/libs/langgraph/poetry.lock b/libs/langgraph/poetry.lock
index 63859ebfc..1fb11b7ac 100644
--- a/libs/langgraph/poetry.lock
+++ b/libs/langgraph/poetry.lock
@@ -1,126 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
-
-[[package]]
-name = "aiohappyeyeballs"
-version = "2.3.5"
-description = "Happy Eyeballs for asyncio"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "aiohappyeyeballs-2.3.5-py3-none-any.whl", hash = "sha256:4d6dea59215537dbc746e93e779caea8178c866856a721c9c660d7a5a7b8be03"},
-    {file = "aiohappyeyeballs-2.3.5.tar.gz", hash = "sha256:6fa48b9f1317254f122a07a131a86b71ca6946ca989ce6326fff54a99a920105"},
-]
-
-[[package]]
-name = "aiohttp"
-version = "3.10.2"
-description = "Async http client/server framework (asyncio)"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "aiohttp-3.10.2-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:95213b3d79c7e387144e9cb7b9d2809092d6ff2c044cb59033aedc612f38fb6d"},
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-
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 name = "json5"
 version = "0.9.25"
@@ -1715,58 +1230,15 @@ files = [
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-optional = false
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-SQLAlchemy = ">=1.4,<3"
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-
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-optional = false
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-
 [[package]]
 name = "langchain-core"
-version = "0.2.27"
+version = "0.2.38"
 description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.8.1"
 files = [
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 [package.dependencies]
@@ -1781,58 +1253,9 @@ PyYAML = ">=5.3"
 tenacity = ">=8.1.0,<8.4.0 || >8.4.0,<9.0.0"
 typing-extensions = ">=4.7"
 
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-optional = false
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-
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-description = "LangChain text splitting utilities"
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-
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-
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-version = "0.1.20"
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-
 [[package]]
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-version = "1.0.6"
+version = "1.0.8"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
 python-versions = "^3.9.0,<4.0"
@@ -1840,7 +1263,7 @@ files = []
 develop = true
 
 [package.dependencies]
-langchain-core = ">=0.2.22,<0.3"
+langchain-core = ">=0.2.38,<0.4"
 
 [package.source]
 type = "directory"
@@ -1848,7 +1271,7 @@ url = "../checkpoint"
 
 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "1.0.3"
+version = "1.0.6"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 optional = false
 python-versions = "^3.9.0,<4.0"
@@ -1856,7 +1279,7 @@ files = []
 develop = true
 
 [package.dependencies]
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+langgraph-checkpoint = "^1.0.8"
 orjson = ">=3.10.1"
 psycopg = "^3.0.0"
 psycopg-pool = "^3.0.0"
@@ -1867,7 +1290,7 @@ url = "../checkpoint-postgres"
 
 [[package]]
 name = "langgraph-checkpoint-sqlite"
-version = "1.0.0"
+version = "1.0.3"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 optional = false
 python-versions = "^3.9.0"
@@ -1876,7 +1299,7 @@ develop = true
 
 [package.dependencies]
 aiosqlite = "^0.20.0"
-langgraph-checkpoint = "^1.0.1"
+langgraph-checkpoint = "^1.0.8"
 
 [package.source]
 type = "directory"
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-    {file = "yarl-1.9.4-cp39-cp39-musllinux_1_1_i686.whl", hash = "sha256:18580f672e44ce1238b82f7fb87d727c4a131f3a9d33a5e0e82b793362bf18b4"},
-    {file = "yarl-1.9.4-cp39-cp39-musllinux_1_1_ppc64le.whl", hash = "sha256:29e0f83f37610f173eb7e7b5562dd71467993495e568e708d99e9d1944f561ec"},
-    {file = "yarl-1.9.4-cp39-cp39-musllinux_1_1_s390x.whl", hash = "sha256:1f23e4fe1e8794f74b6027d7cf19dc25f8b63af1483d91d595d4a07eca1fb26c"},
-    {file = "yarl-1.9.4-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:db8e58b9d79200c76956cefd14d5c90af54416ff5353c5bfd7cbe58818e26ef0"},
-    {file = "yarl-1.9.4-cp39-cp39-win32.whl", hash = "sha256:c7224cab95645c7ab53791022ae77a4509472613e839dab722a72abe5a684575"},
-    {file = "yarl-1.9.4-cp39-cp39-win_amd64.whl", hash = "sha256:824d6c50492add5da9374875ce72db7a0733b29c2394890aef23d533106e2b15"},
-    {file = "yarl-1.9.4-py3-none-any.whl", hash = "sha256:928cecb0ef9d5a7946eb6ff58417ad2fe9375762382f1bf5c55e61645f2c43ad"},
-    {file = "yarl-1.9.4.tar.gz", hash = "sha256:566db86717cf8080b99b58b083b773a908ae40f06681e87e589a976faf8246bf"},
-]
-
-[package.dependencies]
-idna = ">=2.0"
-multidict = ">=4.0"
-
 [[package]]
 name = "zipp"
 version = "3.19.2"
@@ -4296,4 +3071,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9.0,<4.0"
-content-hash = "e0787721e6cb80996a39284c74f1ddee4789c6060d6c2272cb1957f4686bd478"
+content-hash = "3c3d4b9ce6b0609d0399ca9aece50495d0a29b978042908dd981ea267f541934"
diff --git a/libs/langgraph/pyproject.toml b/libs/langgraph/pyproject.toml
index d6e04486f..da8de4636 100644
--- a/libs/langgraph/pyproject.toml
+++ b/libs/langgraph/pyproject.toml
@@ -9,7 +9,7 @@ repository = "https://www.github.com/langchain-ai/langgraph"
 
 [tool.poetry.dependencies]
 python = ">=3.9.0,<4.0"
-langchain-core = ">=0.2.27,<0.3"
+langchain-core = ">=0.2.38,<0.4"
 langgraph-checkpoint = "^1.0.2"
 
 
@@ -21,14 +21,10 @@ pytest-mock  = "^3.10.0"
 syrupy = "^4.0.2"
 httpx = "^0.26.0"
 pytest-watcher = "^0.4.1"
-langchain = ">=0.1.0"
 grandalf = "^0.8"
 mypy = "^1.6.0"
 ruff = "^0.6.2"
 jupyter = "^1.0.0"
-langchainhub = "^0.1.14"
-langchain-openai = ">=0.1.2"
-langchain-anthropic = ">=0.1.8"
 pytest-xdist = {extras = ["psutil"], version = "^3.6.1"}
 pytest-repeat = "^0.9.3"
 langgraph-checkpoint = {path = "../checkpoint", develop = true}
@@ -36,9 +32,6 @@ langgraph-checkpoint-sqlite = {path = "../checkpoint-sqlite", develop = true}
 langgraph-checkpoint-postgres = {path = "../checkpoint-postgres", develop = true}
 psycopg = {extras = ["binary"], version = ">=3.0.0"}
 
-[tool.poetry.group.dev]
-optional = true
-
 [tool.ruff]
 lint.select = [ "E", "F", "I" ]
 lint.ignore = [ "E501" ]
diff --git a/libs/langgraph/tests/__snapshots__/test_pregel.ambr b/libs/langgraph/tests/__snapshots__/test_pregel.ambr
index 4699bb217..bbf8a06cb 100644
--- a/libs/langgraph/tests/__snapshots__/test_pregel.ambr
+++ b/libs/langgraph/tests/__snapshots__/test_pregel.ambr
@@ -287,10 +287,10 @@
   '''
 # ---
 # name: test_conditional_entrypoint_graph_state
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "output": {"title": "Output", "type": "string"}, "steps": {"title": "Steps", "type": "array", "items": {"type": "string"}}}}'
+  '{"properties": {"input": {"default": null, "title": "Input", "type": "string"}, "output": {"default": null, "title": "Output", "type": "string"}, "steps": {"default": null, "items": {"type": "string"}, "title": "Steps", "type": "array"}}, "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_conditional_entrypoint_graph_state.1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "output": {"title": "Output", "type": "string"}, "steps": {"title": "Steps", "type": "array", "items": {"type": "string"}}}}'
+  '{"properties": {"input": {"default": null, "title": "Input", "type": "string"}, "output": {"default": null, "title": "Output", "type": "string"}, "steps": {"default": null, "items": {"type": "string"}, "title": "Steps", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_conditional_entrypoint_graph_state.2
   '''
@@ -370,10 +370,10 @@
   '''
 # ---
 # name: test_conditional_entrypoint_to_multiple_state_graph
-  '{"title": "LangGraphInput", "type": "object", "properties": {"locations": {"title": "Locations", "type": "array", "items": {"type": "string"}}, "results": {"title": "Results", "type": "array", "items": {"type": "string"}}}, "required": ["locations", "results"]}'
+  '{"properties": {"locations": {"items": {"type": "string"}, "title": "Locations", "type": "array"}, "results": {"items": {"type": "string"}, "title": "Results", "type": "array"}}, "required": ["locations", "results"], "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_conditional_entrypoint_to_multiple_state_graph.1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"locations": {"title": "Locations", "type": "array", "items": {"type": "string"}}, "results": {"title": "Results", "type": "array", "items": {"type": "string"}}}}'
+  '{"properties": {"locations": {"default": null, "items": {"type": "string"}, "title": "Locations", "type": "array"}, "results": {"default": null, "items": {"type": "string"}, "title": "Results", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_conditional_entrypoint_to_multiple_state_graph.2
   '''
@@ -2546,9 +2546,6 @@
   
   '''
 # ---
-# name: test_conditional_state_graph
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
-# ---
 # name: test_conditional_state_graph.1
   '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
 # ---
@@ -2628,10 +2625,10 @@
   '''
 # ---
 # name: test_conditional_state_graph[memory]
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[memory].1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[memory].2
   '''
@@ -2710,10 +2707,10 @@
   '''
 # ---
 # name: test_conditional_state_graph[postgres]
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[postgres].1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[postgres].2
   '''
@@ -2792,10 +2789,10 @@
   '''
 # ---
 # name: test_conditional_state_graph[postgres_pipe]
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[postgres_pipe].1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[postgres_pipe].2
   '''
@@ -2874,10 +2871,10 @@
   '''
 # ---
 # name: test_conditional_state_graph[postgres_pool]
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[postgres_pool].1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[postgres_pool].2
   '''
@@ -2956,10 +2953,10 @@
   '''
 # ---
 # name: test_conditional_state_graph[sqlite]
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[sqlite].1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_conditional_state_graph[sqlite].2
   '''
@@ -3331,7 +3328,7 @@
       'query',
       'inner',
     ]),
-    'title': 'LangGraphInput',
+    'title': 'Input',
     'type': 'object',
   })
 # ---
@@ -3350,7 +3347,11 @@
         'type': 'array',
       }),
     }),
-    'title': 'LangGraphOutput',
+    'required': list([
+      'answer',
+      'docs',
+    ]),
+    'title': 'Output',
     'type': 'object',
   })
 # ---
@@ -3397,7 +3398,7 @@
       'query',
       'inner',
     ]),
-    'title': 'LangGraphInput',
+    'title': 'Input',
     'type': 'object',
   })
 # ---
@@ -3416,7 +3417,11 @@
         'type': 'array',
       }),
     }),
-    'title': 'LangGraphOutput',
+    'required': list([
+      'answer',
+      'docs',
+    ]),
+    'title': 'Output',
     'type': 'object',
   })
 # ---
@@ -3463,7 +3468,7 @@
       'query',
       'inner',
     ]),
-    'title': 'LangGraphInput',
+    'title': 'Input',
     'type': 'object',
   })
 # ---
@@ -3482,7 +3487,11 @@
         'type': 'array',
       }),
     }),
-    'title': 'LangGraphOutput',
+    'required': list([
+      'answer',
+      'docs',
+    ]),
+    'title': 'Output',
     'type': 'object',
   })
 # ---
@@ -3529,7 +3538,7 @@
       'query',
       'inner',
     ]),
-    'title': 'LangGraphInput',
+    'title': 'Input',
     'type': 'object',
   })
 # ---
@@ -3548,7 +3557,11 @@
         'type': 'array',
       }),
     }),
-    'title': 'LangGraphOutput',
+    'required': list([
+      'answer',
+      'docs',
+    ]),
+    'title': 'Output',
     'type': 'object',
   })
 # ---
@@ -3595,7 +3608,7 @@
       'query',
       'inner',
     ]),
-    'title': 'LangGraphInput',
+    'title': 'Input',
     'type': 'object',
   })
 # ---
@@ -3614,7 +3627,11 @@
         'type': 'array',
       }),
     }),
-    'title': 'LangGraphOutput',
+    'required': list([
+      'answer',
+      'docs',
+    ]),
+    'title': 'Output',
     'type': 'object',
   })
 # ---
@@ -4116,9 +4133,6 @@
   
   '''
 # ---
-# name: test_message_graph
-  '{"title": "LangGraphInput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
-# ---
 # name: test_message_graph.1
   '{"title": "LangGraphOutput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
 # ---
@@ -4198,10 +4212,10 @@
   '''
 # ---
 # name: test_message_graph[memory]
-  '{"title": "LangGraphInput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "default": null, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphInput", "type": "array"}'
 # ---
 # name: test_message_graph[memory].1
-  '{"title": "LangGraphOutput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphOutput", "type": "array"}'
 # ---
 # name: test_message_graph[memory].2
   '''
@@ -4279,10 +4293,10 @@
   '''
 # ---
 # name: test_message_graph[postgres]
-  '{"title": "LangGraphInput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "default": null, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphInput", "type": "array"}'
 # ---
 # name: test_message_graph[postgres].1
-  '{"title": "LangGraphOutput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphOutput", "type": "array"}'
 # ---
 # name: test_message_graph[postgres].2
   '''
@@ -4360,10 +4374,10 @@
   '''
 # ---
 # name: test_message_graph[postgres_pipe]
-  '{"title": "LangGraphInput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "default": null, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphInput", "type": "array"}'
 # ---
 # name: test_message_graph[postgres_pipe].1
-  '{"title": "LangGraphOutput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphOutput", "type": "array"}'
 # ---
 # name: test_message_graph[postgres_pipe].2
   '''
@@ -4441,10 +4455,10 @@
   '''
 # ---
 # name: test_message_graph[postgres_pool]
-  '{"title": "LangGraphInput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "default": null, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphInput", "type": "array"}'
 # ---
 # name: test_message_graph[postgres_pool].1
-  '{"title": "LangGraphOutput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphOutput", "type": "array"}'
 # ---
 # name: test_message_graph[postgres_pool].2
   '''
@@ -4522,10 +4536,10 @@
   '''
 # ---
 # name: test_message_graph[sqlite]
-  '{"title": "LangGraphInput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "default": null, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphInput", "type": "array"}'
 # ---
 # name: test_message_graph[sqlite].1
-  '{"title": "LangGraphOutput", "type": "array", "items": {"anyOf": [{"$ref": "#/definitions/AIMessage"}, {"$ref": "#/definitions/HumanMessage"}, {"$ref": "#/definitions/ChatMessage"}, {"$ref": "#/definitions/SystemMessage"}, {"$ref": "#/definitions/FunctionMessage"}, {"$ref": "#/definitions/ToolMessage"}]}, "definitions": {"ToolCall": {"title": "ToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"title": "Id", "type": "string"}, "type": {"title": "Type", "enum": ["tool_call"], "type": "string"}}, "required": ["name", "args", "id"]}, "InvalidToolCall": {"title": "InvalidToolCall", "type": "object", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "string"}, "id": {"title": "Id", "type": "string"}, "error": {"title": "Error", "type": "string"}, "type": {"title": "Type", "enum": ["invalid_tool_call"], "type": "string"}}, "required": ["name", "args", "id", "error"]}, "UsageMetadata": {"title": "UsageMetadata", "type": "object", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"]}, "AIMessage": {"title": "AIMessage", "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "ai", "enum": ["ai"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}, "tool_calls": {"title": "Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/ToolCall"}}, "invalid_tool_calls": {"title": "Invalid Tool Calls", "default": [], "type": "array", "items": {"$ref": "#/definitions/InvalidToolCall"}}, "usage_metadata": {"$ref": "#/definitions/UsageMetadata"}}, "required": ["content"]}, "HumanMessage": {"title": "HumanMessage", "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "human", "enum": ["human"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "example": {"title": "Example", "default": false, "type": "boolean"}}, "required": ["content"]}, "ChatMessage": {"title": "ChatMessage", "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "chat", "enum": ["chat"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"]}, "SystemMessage": {"title": "SystemMessage", "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "system", "enum": ["system"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content"]}, "FunctionMessage": {"title": "FunctionMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "function", "enum": ["function"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "name"]}, "ToolMessage": {"title": "ToolMessage", "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "default": "tool", "enum": ["tool"], "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"title": "Artifact"}, "status": {"title": "Status", "default": "success", "enum": ["success", "error"], "type": "string"}}, "required": ["content", "tool_call_id"]}}}'
+  '{"$defs": {"AIMessage": {"additionalProperties": true, "description": "Message from an AI.\\n\\nAIMessage is returned from a chat model as a response to a prompt.\\n\\nThis message represents the output of the model and consists of both\\nthe raw output as returned by the model together standardized fields\\n(e.g., tool calls, usage metadata) added by the LangChain framework.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ai", "default": "ai", "enum": ["ai"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}}, "required": ["content"], "title": "AIMessage", "type": "object"}, "AIMessageChunk": {"additionalProperties": true, "description": "Message chunk from an AI.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "AIMessageChunk", "default": "AIMessageChunk", "enum": ["AIMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}, "tool_calls": {"default": [], "items": {"$ref": "#/$defs/ToolCall"}, "title": "Tool Calls", "type": "array"}, "invalid_tool_calls": {"default": [], "items": {"$ref": "#/$defs/InvalidToolCall"}, "title": "Invalid Tool Calls", "type": "array"}, "usage_metadata": {"anyOf": [{"$ref": "#/$defs/UsageMetadata"}, {"type": "null"}], "default": null}, "tool_call_chunks": {"default": [], "items": {"$ref": "#/$defs/ToolCallChunk"}, "title": "Tool Call Chunks", "type": "array"}}, "required": ["content"], "title": "AIMessageChunk", "type": "object"}, "ChatMessage": {"additionalProperties": true, "description": "Message that can be assigned an arbitrary speaker (i.e. role).", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "chat", "default": "chat", "enum": ["chat"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessage", "type": "object"}, "ChatMessageChunk": {"additionalProperties": true, "description": "Chat Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ChatMessageChunk", "default": "ChatMessageChunk", "enum": ["ChatMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "role": {"title": "Role", "type": "string"}}, "required": ["content", "role"], "title": "ChatMessageChunk", "type": "object"}, "FunctionMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nFunctionMessage are an older version of the ToolMessage schema, and\\ndo not contain the tool_call_id field.\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "function", "default": "function", "enum": ["function"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessage", "type": "object"}, "FunctionMessageChunk": {"additionalProperties": true, "description": "Function Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "FunctionMessageChunk", "default": "FunctionMessageChunk", "enum": ["FunctionMessageChunk"], "title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "name"], "title": "FunctionMessageChunk", "type": "object"}, "HumanMessage": {"additionalProperties": true, "description": "Message from a human.\\n\\nHumanMessages are messages that are passed in from a human to the model.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Instantiate a chat model and invoke it with the messages\\n        model = ...\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "human", "default": "human", "enum": ["human"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessage", "type": "object"}, "HumanMessageChunk": {"additionalProperties": true, "description": "Human Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "HumanMessageChunk", "default": "HumanMessageChunk", "enum": ["HumanMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "example": {"default": false, "title": "Example", "type": "boolean"}}, "required": ["content"], "title": "HumanMessageChunk", "type": "object"}, "InvalidToolCall": {"description": "Allowance for errors made by LLM.\\n\\nHere we add an `error` key to surface errors made during generation\\n(e.g., invalid JSON arguments.)", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "error": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Error"}, "type": {"const": "invalid_tool_call", "enum": ["invalid_tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "error"], "title": "InvalidToolCall", "type": "object"}, "SystemMessage": {"additionalProperties": true, "description": "Message for priming AI behavior.\\n\\nThe system message is usually passed in as the first of a sequence\\nof input messages.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import HumanMessage, SystemMessage\\n\\n        messages = [\\n            SystemMessage(\\n                content=\\"You are a helpful assistant! Your name is Bob.\\"\\n            ),\\n            HumanMessage(\\n                content=\\"What is your name?\\"\\n            )\\n        ]\\n\\n        # Define a chat model and invoke it with the messages\\n        print(model.invoke(messages))", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "system", "default": "system", "enum": ["system"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessage", "type": "object"}, "SystemMessageChunk": {"additionalProperties": true, "description": "System Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "SystemMessageChunk", "default": "SystemMessageChunk", "enum": ["SystemMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content"], "title": "SystemMessageChunk", "type": "object"}, "ToolCall": {"description": "Represents a request to call a tool.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"name\\": \\"foo\\",\\n            \\"args\\": {\\"a\\": 1},\\n            \\"id\\": \\"123\\"\\n        }\\n\\n    This represents a request to call the tool named \\"foo\\" with arguments {\\"a\\": 1}\\n    and an identifier of \\"123\\".", "properties": {"name": {"title": "Name", "type": "string"}, "args": {"title": "Args", "type": "object"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "type": {"const": "tool_call", "enum": ["tool_call"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id"], "title": "ToolCall", "type": "object"}, "ToolCallChunk": {"description": "A chunk of a tool call (e.g., as part of a stream).\\n\\nWhen merging ToolCallChunks (e.g., via AIMessageChunk.__add__),\\nall string attributes are concatenated. Chunks are only merged if their\\nvalues of `index` are equal and not None.\\n\\nExample:\\n\\n.. code-block:: python\\n\\n    left_chunks = [ToolCallChunk(name=\\"foo\\", args=\'{\\"a\\":\', index=0)]\\n    right_chunks = [ToolCallChunk(name=None, args=\'1}\', index=0)]\\n\\n    (\\n        AIMessageChunk(content=\\"\\", tool_call_chunks=left_chunks)\\n        + AIMessageChunk(content=\\"\\", tool_call_chunks=right_chunks)\\n    ).tool_call_chunks == [ToolCallChunk(name=\'foo\', args=\'{\\"a\\":1}\', index=0)]", "properties": {"name": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Name"}, "args": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Args"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "title": "Id"}, "index": {"anyOf": [{"type": "integer"}, {"type": "null"}], "title": "Index"}, "type": {"const": "tool_call_chunk", "enum": ["tool_call_chunk"], "title": "Type", "type": "string"}}, "required": ["name", "args", "id", "index"], "title": "ToolCallChunk", "type": "object"}, "ToolMessage": {"additionalProperties": true, "description": "Message for passing the result of executing a tool back to a model.\\n\\nToolMessages contain the result of a tool invocation. Typically, the result\\nis encoded inside the `content` field.\\n\\nExample: A ToolMessage representing a result of 42 from a tool call with id\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        ToolMessage(content=\'42\', tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\')\\n\\n\\nExample: A ToolMessage where only part of the tool output is sent to the model\\n    and the full output is passed in to artifact.\\n\\n    .. versionadded:: 0.2.17\\n\\n    .. code-block:: python\\n\\n        from langchain_core.messages import ToolMessage\\n\\n        tool_output = {\\n            \\"stdout\\": \\"From the graph we can see that the correlation between x and y is ...\\",\\n            \\"stderr\\": None,\\n            \\"artifacts\\": {\\"type\\": \\"image\\", \\"base64_data\\": \\"/9j/4gIcSU...\\"},\\n        }\\n\\n        ToolMessage(\\n            content=tool_output[\\"stdout\\"],\\n            artifact=tool_output,\\n            tool_call_id=\'call_Jja7J89XsjrOLA5r!MEOW!SL\',\\n        )\\n\\nThe tool_call_id field is used to associate the tool call request with the\\ntool call response. This is useful in situations where a chat model is able\\nto request multiple tool calls in parallel.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "tool", "default": "tool", "enum": ["tool"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessage", "type": "object"}, "ToolMessageChunk": {"additionalProperties": true, "description": "Tool Message chunk.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"const": "ToolMessageChunk", "default": "ToolMessageChunk", "enum": ["ToolMessageChunk"], "title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}, "tool_call_id": {"title": "Tool Call Id", "type": "string"}, "artifact": {"default": null, "title": "Artifact"}, "status": {"default": "success", "enum": ["success", "error"], "title": "Status", "type": "string"}}, "required": ["content", "tool_call_id"], "title": "ToolMessageChunk", "type": "object"}, "UsageMetadata": {"description": "Usage metadata for a message, such as token counts.\\n\\nThis is a standard representation of token usage that is consistent across models.\\n\\nExample:\\n\\n    .. code-block:: python\\n\\n        {\\n            \\"input_tokens\\": 10,\\n            \\"output_tokens\\": 20,\\n            \\"total_tokens\\": 30\\n        }", "properties": {"input_tokens": {"title": "Input Tokens", "type": "integer"}, "output_tokens": {"title": "Output Tokens", "type": "integer"}, "total_tokens": {"title": "Total Tokens", "type": "integer"}}, "required": ["input_tokens", "output_tokens", "total_tokens"], "title": "UsageMetadata", "type": "object"}}, "items": {"anyOf": [{"$ref": "#/$defs/AIMessage"}, {"$ref": "#/$defs/HumanMessage"}, {"$ref": "#/$defs/ChatMessage"}, {"$ref": "#/$defs/SystemMessage"}, {"$ref": "#/$defs/FunctionMessage"}, {"$ref": "#/$defs/ToolMessage"}, {"$ref": "#/$defs/AIMessageChunk"}, {"$ref": "#/$defs/HumanMessageChunk"}, {"$ref": "#/$defs/ChatMessageChunk"}, {"$ref": "#/$defs/SystemMessageChunk"}, {"$ref": "#/$defs/FunctionMessageChunk"}, {"$ref": "#/$defs/ToolMessageChunk"}]}, "title": "LangGraphOutput", "type": "array"}'
 # ---
 # name: test_message_graph[sqlite].2
   '''
@@ -4765,18 +4779,18 @@
   	tool_two___end__(__end__)
   	tool_three(tool_three)
   	__end__([__end__]):::last
-  	subgraph tool_two
-  	tool_two___start__ -.-> tool_two_tool_two_slow;
-  	tool_two_tool_two_slow --> tool_two___end__;
-  	tool_two___start__ -.-> tool_two_tool_two_fast;
-  	tool_two_tool_two_fast --> tool_two___end__;
-  	end
   	__start__ -.-> tool_one;
   	tool_one --> __end__;
   	__start__ -.-> tool_two___start__;
   	tool_two___end__ --> __end__;
   	__start__ -.-> tool_three;
   	tool_three --> __end__;
+  	subgraph tool_two
+  	tool_two___start__ -.-> tool_two_tool_two_slow;
+  	tool_two_tool_two_slow --> tool_two___end__;
+  	tool_two___start__ -.-> tool_two_tool_two_fast;
+  	tool_two_tool_two_fast --> tool_two___end__;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -4866,10 +4880,10 @@
   '''
 # ---
 # name: test_prebuilt_tool_chat
-  '{"title": "LangGraphInput", "type": "object", "properties": {"messages": {"title": "Messages", "type": "array", "items": {"$ref": "#/definitions/BaseMessage"}}}, "required": ["messages"], "definitions": {"BaseMessage": {"title": "BaseMessage", "description": "Base abstract message class.\\n\\nMessages are the inputs and outputs of ChatModels.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "type"]}}}'
+  '{"$defs": {"BaseMessage": {"additionalProperties": true, "description": "Base abstract message class.\\n\\nMessages are the inputs and outputs of ChatModels.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "type"], "title": "BaseMessage", "type": "object"}}, "properties": {"messages": {"items": {"$ref": "#/$defs/BaseMessage"}, "title": "Messages", "type": "array"}}, "required": ["messages"], "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_prebuilt_tool_chat.1
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"messages": {"title": "Messages", "type": "array", "items": {"$ref": "#/definitions/BaseMessage"}}}, "definitions": {"BaseMessage": {"title": "BaseMessage", "description": "Base abstract message class.\\n\\nMessages are the inputs and outputs of ChatModels.", "type": "object", "properties": {"content": {"title": "Content", "anyOf": [{"type": "string"}, {"type": "array", "items": {"anyOf": [{"type": "string"}, {"type": "object"}]}}]}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "type": "string"}, "name": {"title": "Name", "type": "string"}, "id": {"title": "Id", "type": "string"}}, "required": ["content", "type"]}}}'
+  '{"$defs": {"BaseMessage": {"additionalProperties": true, "description": "Base abstract message class.\\n\\nMessages are the inputs and outputs of ChatModels.", "properties": {"content": {"anyOf": [{"type": "string"}, {"items": {"anyOf": [{"type": "string"}, {"type": "object"}]}, "type": "array"}], "title": "Content"}, "additional_kwargs": {"title": "Additional Kwargs", "type": "object"}, "response_metadata": {"title": "Response Metadata", "type": "object"}, "type": {"title": "Type", "type": "string"}, "name": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Name"}, "id": {"anyOf": [{"type": "string"}, {"type": "null"}], "default": null, "title": "Id"}}, "required": ["content", "type"], "title": "BaseMessage", "type": "object"}}, "properties": {"messages": {"default": null, "items": {"$ref": "#/$defs/BaseMessage"}, "title": "Messages", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_prebuilt_tool_chat.2
   '''
@@ -4951,7 +4965,6 @@
   '''
   graph TD;
   	__start__ --> Researcher;
-  	Researcher -. &nbspredo&nbsp .-> Researcher;
   	Researcher -. &nbspcontinue&nbsp .-> Chart_Generator;
   	Researcher -. &nbspcall_tool&nbsp .-> Call_Tool;
   	Researcher -. &nbspend&nbsp .-> __end__;
@@ -4960,6 +4973,7 @@
   	Chart_Generator -. &nbspend&nbsp .-> __end__;
   	Call_Tool -.-> Researcher;
   	Call_Tool -.-> Chart_Generator;
+  	Researcher -. &nbspredo&nbsp .-> Researcher;
   
   '''
 # ---
@@ -5102,13 +5116,13 @@
   '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
 # ---
 # name: test_state_graph_w_config_inherited_state_keys
-  '{"title": "LangGraphConfig", "type": "object", "properties": {"configurable": {"$ref": "#/definitions/Configurable"}}, "definitions": {"Configurable": {"title": "Configurable", "type": "object", "properties": {"tools": {"title": "Tools", "type": "array", "items": {"type": "string"}}}}}}'
+  '{"$defs": {"Configurable": {"properties": {"tools": {"default": null, "items": {"type": "string"}, "title": "Tools", "type": "array"}}, "title": "Configurable", "type": "object"}}, "properties": {"configurable": {"allOf": [{"$ref": "#/$defs/Configurable"}], "default": null}}, "title": "LangGraphConfig", "type": "object"}'
 # ---
 # name: test_state_graph_w_config_inherited_state_keys.1
-  '{"title": "LangGraphInput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "required": ["input"], "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "required": ["input"], "title": "LangGraphInput", "type": "object"}'
 # ---
 # name: test_state_graph_w_config_inherited_state_keys.2
-  '{"title": "LangGraphOutput", "type": "object", "properties": {"input": {"title": "Input", "type": "string"}, "agent_outcome": {"title": "Agent Outcome", "anyOf": [{"$ref": "#/definitions/AgentAction"}, {"$ref": "#/definitions/AgentFinish"}]}, "intermediate_steps": {"title": "Intermediate Steps", "type": "array", "items": {"type": "array", "minItems": 2, "maxItems": 2, "items": [{"$ref": "#/definitions/AgentAction"}, {"type": "string"}]}}}, "definitions": {"AgentAction": {"title": "AgentAction", "description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "type": "object", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"title": "Tool Input", "anyOf": [{"type": "string"}, {"type": "object"}]}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentAction", "enum": ["AgentAction"], "type": "string"}}, "required": ["tool", "tool_input", "log"]}, "AgentFinish": {"title": "AgentFinish", "description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "type": "object", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"title": "Type", "default": "AgentFinish", "enum": ["AgentFinish"], "type": "string"}}, "required": ["return_values", "log"]}}}'
+  '{"$defs": {"AgentAction": {"description": "Represents a request to execute an action by an agent.\\n\\nThe action consists of the name of the tool to execute and the input to pass\\nto the tool. The log is used to pass along extra information about the action.", "properties": {"tool": {"title": "Tool", "type": "string"}, "tool_input": {"anyOf": [{"type": "string"}, {"type": "object"}], "title": "Tool Input"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentAction", "default": "AgentAction", "enum": ["AgentAction"], "title": "Type", "type": "string"}}, "required": ["tool", "tool_input", "log"], "title": "AgentAction", "type": "object"}, "AgentFinish": {"description": "Final return value of an ActionAgent.\\n\\nAgents return an AgentFinish when they have reached a stopping condition.", "properties": {"return_values": {"title": "Return Values", "type": "object"}, "log": {"title": "Log", "type": "string"}, "type": {"const": "AgentFinish", "default": "AgentFinish", "enum": ["AgentFinish"], "title": "Type", "type": "string"}}, "required": ["return_values", "log"], "title": "AgentFinish", "type": "object"}}, "properties": {"input": {"default": null, "title": "Input", "type": "string"}, "agent_outcome": {"anyOf": [{"$ref": "#/$defs/AgentAction"}, {"$ref": "#/$defs/AgentFinish"}, {"type": "null"}], "default": null, "title": "Agent Outcome"}, "intermediate_steps": {"default": null, "items": {"maxItems": 2, "minItems": 2, "prefixItems": [{"$ref": "#/$defs/AgentAction"}, {"type": "string"}], "type": "array"}, "title": "Intermediate Steps", "type": "array"}}, "title": "LangGraphOutput", "type": "object"}'
 # ---
 # name: test_weather_subgraph[memory]
   '''
@@ -5120,15 +5134,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -5145,15 +5159,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -5170,15 +5184,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -5195,15 +5209,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -5220,15 +5234,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -5246,16 +5260,16 @@
   	p_two_c_two(c_two)
   	p_two___end__(__end__)
   	__end__([__end__]):::last
+  	__start__ --> p_one;
+  	p_two___end__ --> p_one;
+  	p_one -. &nbsp0&nbsp .-> p_two___start__;
+  	p_one -. &nbsp1&nbsp .-> __end__;
   	subgraph p_two
   	p_two___start__ --> p_two_c_one;
   	p_two_c_two --> p_two_c_one;
   	p_two_c_one -. &nbsp0&nbsp .-> p_two_c_two;
   	p_two_c_one -. &nbsp1&nbsp .-> p_two___end__;
   	end
-  	__start__ --> p_one;
-  	p_two___end__ --> p_one;
-  	p_one -. &nbsp0&nbsp .-> p_two___start__;
-  	p_one -. &nbsp1&nbsp .-> __end__;
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
diff --git a/libs/langgraph/tests/__snapshots__/test_pregel_async.ambr b/libs/langgraph/tests/__snapshots__/test_pregel_async.ambr
index 3aaccffd1..1b0f6c41d 100644
--- a/libs/langgraph/tests/__snapshots__/test_pregel_async.ambr
+++ b/libs/langgraph/tests/__snapshots__/test_pregel_async.ambr
@@ -1204,15 +1204,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -1229,15 +1229,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -1254,15 +1254,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -1279,15 +1279,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
@@ -1304,15 +1304,15 @@
   	weather_graph_model_node(model_node)
   	weather_graph_weather_node(weather_node<hr/><small><em>__interrupt = before</em></small>)
   	__end__([__end__]):::last
-  	subgraph weather_graph
-  	weather_graph_model_node --> weather_graph_weather_node;
-  	end
   	__start__ --> router_node;
   	normal_llm_node --> __end__;
   	weather_graph_weather_node --> __end__;
   	router_node -.-> normal_llm_node;
   	router_node -.-> weather_graph_model_node;
   	router_node -.-> __end__;
+  	subgraph weather_graph
+  	weather_graph_model_node --> weather_graph_weather_node;
+  	end
   	classDef default fill:#f2f0ff,line-height:1.2
   	classDef first fill-opacity:0
   	classDef last fill:#bfb6fc
diff --git a/libs/langgraph/tests/conftest.py b/libs/langgraph/tests/conftest.py
index ca6351c6b..5ec5ebafd 100644
--- a/libs/langgraph/tests/conftest.py
+++ b/libs/langgraph/tests/conftest.py
@@ -4,6 +4,8 @@
 from uuid import UUID, uuid4
 
 import pytest
+from langchain_core import __version__ as core_version
+from packaging import version
 from psycopg import AsyncConnection, Connection
 from psycopg_pool import AsyncConnectionPool, ConnectionPool
 from pytest_mock import MockerFixture
@@ -16,6 +18,8 @@
 from tests.memory_assert import MemorySaverAssertImmutable
 
 DEFAULT_POSTGRES_URI = "postgres://postgres:postgres@localhost:5442/"
+# TODO: fix this once core is released
+SHOULD_CHECK_SNAPSHOTS = version.parse(core_version) >= version.parse("0.3.0.dev0")
 
 
 @pytest.fixture
diff --git a/libs/langgraph/tests/messages.py b/libs/langgraph/tests/messages.py
index 988a7332a..ecc657a36 100644
--- a/libs/langgraph/tests/messages.py
+++ b/libs/langgraph/tests/messages.py
@@ -10,7 +10,7 @@
 from typing import Any
 
 from langchain_core.documents import Document
-from langchain_core.messages import AIMessage, AIMessageChunk, HumanMessage
+from langchain_core.messages import AIMessage, AIMessageChunk, HumanMessage, ToolMessage
 
 from tests.any_str import AnyStr
 
@@ -37,7 +37,14 @@ def _AnyIdAIMessageChunk(**kwargs: Any) -> AIMessageChunk:
 
 
 def _AnyIdHumanMessage(**kwargs: Any) -> HumanMessage:
-    """Create a human with an any id field."""
+    """Create a human message with an any id field."""
     message = HumanMessage(**kwargs)
     message.id = AnyStr()
     return message
+
+
+def _AnyIdToolMessage(**kwargs: Any) -> ToolMessage:
+    """Create a tool message with an any id field."""
+    message = ToolMessage(**kwargs)
+    message.id = AnyStr()
+    return message
diff --git a/libs/langgraph/tests/test_prebuilt.py b/libs/langgraph/tests/test_prebuilt.py
index 82fd5e613..0502f0a76 100644
--- a/libs/langgraph/tests/test_prebuilt.py
+++ b/libs/langgraph/tests/test_prebuilt.py
@@ -14,11 +14,11 @@
     ToolMessage,
 )
 from langchain_core.outputs import ChatGeneration, ChatResult
-from langchain_core.pydantic_v1 import BaseModel
 from langchain_core.runnables import Runnable, RunnableLambda
 from langchain_core.tools import BaseTool
 from langchain_core.tools import tool as dec_tool
-from pydantic import BaseModel as BaseModelV2
+from pydantic import BaseModel
+from pydantic.v1 import BaseModel as BaseModelV1
 
 from langgraph.checkpoint.base import BaseCheckpointSaver
 from langgraph.prebuilt import ToolNode, ValidationNode, create_react_agent
@@ -379,7 +379,7 @@ class MyModel(BaseModel):
     some_other_val: str
 
 
-class MyModelV2(BaseModelV2):
+class MyModelV1(BaseModelV1):
     some_val: int
     some_other_val: str
 
@@ -395,7 +395,7 @@ def my_tool(some_val: int, some_other_val: str) -> str:
     [
         my_function,
         MyModel,
-        MyModelV2,
+        MyModelV1,
         my_tool,
     ],
 )
diff --git a/libs/langgraph/tests/test_pregel.py b/libs/langgraph/tests/test_pregel.py
index 690b2647c..3fd4e73b8 100644
--- a/libs/langgraph/tests/test_pregel.py
+++ b/libs/langgraph/tests/test_pregel.py
@@ -34,6 +34,7 @@
     RunnablePick,
 )
 from langsmith import traceable
+from pydantic import BaseModel
 from pytest_mock import MockerFixture
 from syrupy import SnapshotAssertion
 
@@ -72,10 +73,50 @@
 from langgraph.pregel.types import PregelTask
 from langgraph.store.memory import MemoryStore
 from tests.any_str import AnyDict, AnyStr, AnyVersion, UnsortedSequence
-from tests.conftest import ALL_CHECKPOINTERS_SYNC
+from tests.conftest import ALL_CHECKPOINTERS_SYNC, SHOULD_CHECK_SNAPSHOTS
 from tests.fake_tracer import FakeTracer
 from tests.memory_assert import MemorySaverAssertCheckpointMetadata
-from tests.messages import _AnyIdAIMessage, _AnyIdHumanMessage
+from tests.messages import _AnyIdAIMessage, _AnyIdHumanMessage, _AnyIdToolMessage
+
+
+# define these objects to avoid importing langchain_core.agents
+# and therefore avoid relying on core Pydantic version
+class AgentAction(BaseModel):
+    tool: str
+    tool_input: Union[str, dict]
+    log: str
+    type: Literal["AgentAction"] = "AgentAction"
+
+    model_config = {
+        "json_schema_extra": {
+            "description": (
+                """Represents a request to execute an action by an agent.
+
+The action consists of the name of the tool to execute and the input to pass
+to the tool. The log is used to pass along extra information about the action."""
+            )
+        }
+    }
+
+
+class AgentFinish(BaseModel):
+    """Final return value of an ActionAgent.
+
+    Agents return an AgentFinish when they have reached a stopping condition.
+    """
+
+    return_values: dict
+    log: str
+    type: Literal["AgentFinish"] = "AgentFinish"
+    model_config = {
+        "json_schema_extra": {
+            "description": (
+                """Final return value of an ActionAgent.
+
+Agents return an AgentFinish when they have reached a stopping condition."""
+            )
+        }
+    }
 
 
 def test_graph_validation() -> None:
@@ -440,15 +481,23 @@ def test_invoke_single_process_in_out(mocker: MockerFixture) -> None:
     graph.set_finish_point("add_one")
     gapp = graph.compile()
 
-    assert app.input_schema.schema() == {"title": "LangGraphInput", "type": "integer"}
-    assert app.output_schema.schema() == {"title": "LangGraphOutput", "type": "integer"}
-    with warnings.catch_warnings():
-        warnings.simplefilter("error")  # raise warnings as errors
-        assert app.config_schema().schema() == {
-            "properties": {},
-            "title": "LangGraphConfig",
-            "type": "object",
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "integer",
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "integer",
         }
+        with warnings.catch_warnings():
+            warnings.simplefilter("error")  # raise warnings as errors
+            assert app.config_schema().model_json_schema() == {
+                "properties": {},
+                "title": "LangGraphConfig",
+                "type": "object",
+            }
+
     assert app.invoke(2) == 3
     assert app.invoke(2, output_keys=["output"]) == {"output": 3}
     assert repr(app), "does not raise recursion error"
@@ -489,16 +538,24 @@ def test_invoke_single_process_in_write_kwargs(mocker: MockerFixture) -> None:
         input_channels="input",
     )
 
-    assert app.input_schema.schema() == {"title": "LangGraphInput", "type": "integer"}
-    assert app.output_schema.schema() == {
-        "title": "LangGraphOutput",
-        "type": "object",
-        "properties": {
-            "output": {"title": "Output", "type": "integer"},
-            "fixed": {"title": "Fixed", "type": "integer"},
-            "output_plus_one": {"title": "Output Plus One", "type": "integer"},
-        },
-    }
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "integer",
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "object",
+            "properties": {
+                "output": {"title": "Output", "type": "integer", "default": None},
+                "fixed": {"title": "Fixed", "type": "integer", "default": None},
+                "output_plus_one": {
+                    "title": "Output Plus One",
+                    "type": "integer",
+                    "default": None,
+                },
+            },
+        }
     assert app.invoke(2) == {"output": 3, "fixed": 5, "output_plus_one": 4}
 
 
@@ -513,12 +570,18 @@ def test_invoke_single_process_in_out_dict(mocker: MockerFixture) -> None:
         output_channels=["output"],
     )
 
-    assert app.input_schema.schema() == {"title": "LangGraphInput", "type": "integer"}
-    assert app.output_schema.schema() == {
-        "title": "LangGraphOutput",
-        "type": "object",
-        "properties": {"output": {"title": "Output", "type": "integer"}},
-    }
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "integer",
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "object",
+            "properties": {
+                "output": {"title": "Output", "type": "integer", "default": None}
+            },
+        }
     assert app.invoke(2) == {"output": 3}
 
 
@@ -532,17 +595,21 @@ def test_invoke_single_process_in_dict_out_dict(mocker: MockerFixture) -> None:
         input_channels=["input"],
         output_channels=["output"],
     )
-
-    assert app.input_schema.schema() == {
-        "title": "LangGraphInput",
-        "type": "object",
-        "properties": {"input": {"title": "Input", "type": "integer"}},
-    }
-    assert app.output_schema.schema() == {
-        "title": "LangGraphOutput",
-        "type": "object",
-        "properties": {"output": {"title": "Output", "type": "integer"}},
-    }
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "object",
+            "properties": {
+                "input": {"title": "Input", "type": "integer", "default": None}
+            },
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "object",
+            "properties": {
+                "output": {"title": "Output", "type": "integer", "default": None}
+            },
+        }
     assert app.invoke({"input": 2}) == {"output": 3}
 
 
@@ -1955,7 +2022,6 @@ def an_int() -> Generator[int, None, None]:
 def test_conditional_graph(
     snapshot: SnapshotAssertion, request: pytest.FixtureRequest, checkpointer_name: str
 ) -> None:
-    from langchain_core.agents import AgentAction, AgentFinish
     from langchain_core.language_models.fake import FakeStreamingListLLM
     from langchain_core.prompts import PromptTemplate
     from langchain_core.runnables import RunnablePassthrough
@@ -2034,11 +2100,12 @@ def should_continue(data: dict) -> str:
 
     app = workflow.compile()
 
-    assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
-    assert app.get_graph().draw_mermaid() == snapshot
-    assert json.dumps(app.get_graph(xray=True).to_json(), indent=2) == snapshot
-    assert app.get_graph(xray=True).draw_mermaid(with_styles=False) == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+        assert app.get_graph().draw_mermaid() == snapshot
+        assert json.dumps(app.get_graph(xray=True).to_json(), indent=2) == snapshot
+        assert app.get_graph(xray=True).draw_mermaid(with_styles=False) == snapshot
 
     assert app.invoke({"input": "what is weather in sf"}) == {
         "input": "what is weather in sf",
@@ -2168,8 +2235,9 @@ def should_continue(data: dict) -> str:
     )
     config = {"configurable": {"thread_id": "1"}}
 
-    assert app_w_interrupt.get_graph().to_json() == snapshot
-    assert app_w_interrupt.get_graph().draw_mermaid() == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app_w_interrupt.get_graph().to_json() == snapshot
+        assert app_w_interrupt.get_graph().draw_mermaid() == snapshot
 
     assert [
         c for c in app_w_interrupt.stream({"input": "what is weather in sf"}, config)
@@ -2811,10 +2879,11 @@ def should_start(data: str) -> str:
 
     app = workflow.compile()
 
-    assert app.get_input_schema().schema_json() == snapshot
-    assert app.get_output_schema().schema_json() == snapshot
-    assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.get_input_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_output_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
 
     assert (
         app.invoke("what is weather in sf", debug=True)
@@ -2852,10 +2921,11 @@ def continue_to_weather(state: OverallState) -> list[Send]:
 
     app = workflow.compile()
 
-    assert app.get_input_schema().schema_json() == snapshot
-    assert app.get_output_schema().schema_json() == snapshot
-    assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.get_input_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_output_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
 
     assert app.invoke({"locations": ["sf", "nyc"]}, debug=True) == {
         "locations": ["sf", "nyc"],
@@ -2875,7 +2945,6 @@ def test_conditional_state_graph(
     request: pytest.FixtureRequest,
     checkpointer_name: str,
 ) -> None:
-    from langchain_core.agents import AgentAction, AgentFinish
     from langchain_core.language_models.fake import FakeStreamingListLLM
     from langchain_core.prompts import PromptTemplate
     from langchain_core.tools import tool
@@ -2993,10 +3062,11 @@ def should_continue(data: AgentState) -> str:
 
     app = workflow.compile()
 
-    assert app.get_input_schema().schema_json() == snapshot
-    assert app.get_output_schema().schema_json() == snapshot
-    assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.get_input_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_output_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
 
     with assert_ctx_once():
         assert app.invoke({"input": "what is weather in sf"}) == {
@@ -3687,7 +3757,6 @@ class State(TypedDict):
 
 
 def test_state_graph_w_config_inherited_state_keys(snapshot: SnapshotAssertion) -> None:
-    from langchain_core.agents import AgentAction, AgentFinish
     from langchain_core.language_models.fake import FakeStreamingListLLM
     from langchain_core.prompts import PromptTemplate
     from langchain_core.tools import tool
@@ -3777,9 +3846,10 @@ def should_continue(data: AgentState) -> str:
 
     app = builder.compile()
 
-    assert app.config_schema().schema_json() == snapshot
-    assert app.get_input_schema().schema_json() == snapshot
-    assert app.get_output_schema().schema_json() == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.config_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_input_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_output_schema().model_json_schema()) == snapshot
 
     assert builder.channels.keys() == {"input", "agent_outcome", "intermediate_steps"}
 
@@ -3842,10 +3912,11 @@ def should_start(data: AgentState) -> str:
 
     app = workflow.compile()
 
-    assert app.get_input_schema().schema_json() == snapshot
-    assert app.get_output_schema().schema_json() == snapshot
-    assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.get_input_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_output_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
 
     assert app.invoke({"input": "what is weather in sf"}) == {
         "input": "what is weather in sf",
@@ -3862,7 +3933,7 @@ def test_prebuilt_tool_chat(snapshot: SnapshotAssertion) -> None:
     from langchain_core.language_models.fake_chat_models import (
         FakeMessagesListChatModel,
     )
-    from langchain_core.messages import AIMessage, HumanMessage, ToolMessage
+    from langchain_core.messages import AIMessage, HumanMessage
     from langchain_core.tools import tool
 
     class FakeFuntionChatModel(FakeMessagesListChatModel):
@@ -3909,18 +3980,18 @@ def search_api(query: str) -> str:
 
     app = create_tool_calling_executor(model, tools)
 
-    assert app.get_input_schema().schema_json() == snapshot
-    assert app.get_output_schema().schema_json() == snapshot
-    assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.get_input_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_output_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
 
     assert app.invoke(
         {"messages": [HumanMessage(content="what is weather in sf")]}
     ) == {
         "messages": [
             _AnyIdHumanMessage(content="what is weather in sf"),
-            AIMessage(
-                id=AnyStr(),
+            _AnyIdAIMessage(
                 content="",
                 tool_calls=[
                     {
@@ -3930,14 +4001,12 @@ def search_api(query: str) -> str:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for query",
                 name="search_api",
                 tool_call_id="tool_call123",
-                id=AnyStr(),
             ),
-            AIMessage(
-                id=AnyStr(),
+            _AnyIdAIMessage(
                 content="",
                 tool_calls=[
                     {
@@ -3952,13 +4021,12 @@ def search_api(query: str) -> str:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for another",
                 name="search_api",
                 tool_call_id="tool_call234",
-                id=AnyStr(),
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a third one",
                 name="search_api",
                 tool_call_id="tool_call567",
@@ -3988,7 +4056,7 @@ def search_api(query: str) -> str:
         {
             "agent": {
                 "messages": [
-                    AIMessage(
+                    _AnyIdAIMessage(
                         content="",
                         tool_calls=[
                             {
@@ -3997,7 +4065,6 @@ def search_api(query: str) -> str:
                                 "args": {"query": "query"},
                             },
                         ],
-                        id=AnyStr(),
                     )
                 ]
             }
@@ -4005,11 +4072,10 @@ def search_api(query: str) -> str:
         {
             "tools": {
                 "messages": [
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for query",
                         name="search_api",
                         tool_call_id="tool_call123",
-                        id=AnyStr(),
                     )
                 ]
             }
@@ -4017,7 +4083,7 @@ def search_api(query: str) -> str:
         {
             "agent": {
                 "messages": [
-                    AIMessage(
+                    _AnyIdAIMessage(
                         content="",
                         tool_calls=[
                             {
@@ -4031,7 +4097,6 @@ def search_api(query: str) -> str:
                                 "args": {"query": "a third one"},
                             },
                         ],
-                        id=AnyStr(),
                     )
                 ]
             }
@@ -4039,17 +4104,15 @@ def search_api(query: str) -> str:
         {
             "tools": {
                 "messages": [
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for another",
                         name="search_api",
                         tool_call_id="tool_call234",
-                        id=AnyStr(),
                     ),
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for a third one",
                         name="search_api",
                         tool_call_id="tool_call567",
-                        id=AnyStr(),
                     ),
                 ]
             }
@@ -4063,8 +4126,7 @@ def search_api(query: str) -> str:
         {
             "agent": {
                 "messages": [
-                    AIMessage(
-                        id=AnyStr(),
+                    _AnyIdAIMessage(
                         content="",
                         tool_calls=[
                             {
@@ -4080,11 +4142,10 @@ def search_api(query: str) -> str:
         {
             "tools": {
                 "messages": [
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for query",
                         name="search_api",
                         tool_call_id="tool_call123",
-                        id=AnyStr(),
                     )
                 ]
             }
@@ -4092,8 +4153,7 @@ def search_api(query: str) -> str:
         {
             "agent": {
                 "messages": [
-                    AIMessage(
-                        id=AnyStr(),
+                    _AnyIdAIMessage(
                         content="",
                         tool_calls=[
                             {
@@ -4114,17 +4174,15 @@ def search_api(query: str) -> str:
         {
             "tools": {
                 "messages": [
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for another",
                         name="search_api",
                         tool_call_id="tool_call234",
-                        id=AnyStr(),
                     ),
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for a third one",
                         name="search_api",
                         tool_call_id="tool_call567",
-                        id=AnyStr(),
                     ),
                 ]
             }
@@ -4272,10 +4330,9 @@ def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for query",
                 name="search_api",
-                id=AnyStr(),
                 tool_call_id="tool_call123",
             ),
             AIMessage(
@@ -4294,16 +4351,14 @@ def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for another",
                 name="search_api",
-                id=AnyStr(),
                 tool_call_id="tool_call234",
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a third one",
                 name="search_api",
-                id=AnyStr(),
                 tool_call_id="tool_call567",
             ),
             AIMessage(content="answer", id="ai3"),
@@ -4333,10 +4388,9 @@ def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
         },
         {
             "tools": {
-                "messages": ToolMessage(
+                "messages": _AnyIdToolMessage(
                     content="result for query",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call123",
                 )
             }
@@ -4363,20 +4417,18 @@ def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
         },
         {
             "tools": {
-                "messages": ToolMessage(
+                "messages": _AnyIdToolMessage(
                     content="result for another",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call234",
                 )
             },
         },
         {
             "tools": {
-                "messages": ToolMessage(
+                "messages": _AnyIdToolMessage(
                     content="result for a third one",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call567",
                 ),
             },
@@ -4513,10 +4565,9 @@ def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
     assert [c for c in app_w_interrupt.stream(None, config)] == [
         {
             "tools": {
-                "messages": ToolMessage(
+                "messages": _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call123",
                 )
             }
@@ -4558,10 +4609,9 @@ def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                         },
                     ],
                 ),
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call123",
                 ),
                 AIMessage(
@@ -4638,10 +4688,9 @@ def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                         },
                     ],
                 ),
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call123",
                 ),
                 AIMessage(content="answer", id="ai2"),
@@ -4683,7 +4732,6 @@ def test_message_graph(
         AIMessage,
         BaseMessage,
         HumanMessage,
-        ToolMessage,
     )
     from langchain_core.outputs import ChatGeneration, ChatResult
     from langchain_core.tools import tool
@@ -4797,15 +4845,15 @@ def should_continue(messages):
     # meaning you can use it as you would any other runnable
     app = workflow.compile()
 
-    assert app.get_input_schema().schema_json() == snapshot
-    assert app.get_output_schema().schema_json() == snapshot
-    assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert json.dumps(app.get_input_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_output_schema().model_json_schema()) == snapshot
+        assert json.dumps(app.get_graph().to_json(), indent=2) == snapshot
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
 
     assert app.invoke(HumanMessage(content="what is weather in sf")) == [
-        HumanMessage(
+        _AnyIdHumanMessage(
             content="what is weather in sf",
-            id="00000000-0000-4000-8000-000000000002",  # adds missing ids
         ),
         AIMessage(
             content="",
@@ -4818,11 +4866,10 @@ def should_continue(messages):
             ],
             id="ai1",  # respects ids passed in
         ),
-        ToolMessage(
+        _AnyIdToolMessage(
             content="result for query",
             name="search_api",
             tool_call_id="tool_call123",
-            id="00000000-0000-4000-8000-000000000010",
         ),
         AIMessage(
             content="",
@@ -4835,11 +4882,10 @@ def should_continue(messages):
             ],
             id="ai2",
         ),
-        ToolMessage(
+        _AnyIdToolMessage(
             content="result for another",
             name="search_api",
             tool_call_id="tool_call456",
-            id="00000000-0000-4000-8000-000000000018",
         ),
         AIMessage(content="answer", id="ai3"),
     ]
@@ -4860,11 +4906,10 @@ def should_continue(messages):
         },
         {
             "tools": [
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for query",
                     name="search_api",
                     tool_call_id="tool_call123",
-                    id="00000000-0000-4000-8000-000000000033",
                 )
             ]
         },
@@ -4883,11 +4928,10 @@ def should_continue(messages):
         },
         {
             "tools": [
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for another",
                     name="search_api",
                     tool_call_id="tool_call456",
-                    id="00000000-0000-4000-8000-000000000041",
                 )
             ]
         },
@@ -5007,11 +5051,10 @@ def should_continue(messages):
     assert [c for c in app_w_interrupt.stream(None, config)] == [
         {
             "tools": [
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
                     tool_call_id="tool_call123",
-                    id=AnyStr(),
                 )
             ]
         },
@@ -5044,11 +5087,10 @@ def should_continue(messages):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
-                id=AnyStr(),
             ),
             AIMessage(
                 content="",
@@ -5107,11 +5149,10 @@ def should_continue(messages):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
-                id=AnyStr(),
             ),
             AIMessage(content="answer", id="ai2"),
         ],
@@ -5240,11 +5281,10 @@ def should_continue(messages):
     assert [c for c in app_w_interrupt.stream(None, config)] == [
         {
             "tools": [
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
                     tool_call_id="tool_call123",
-                    id=AnyStr(),
                 )
             ]
         },
@@ -5277,11 +5317,10 @@ def should_continue(messages):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
-                id=AnyStr(),
             ),
             AIMessage(
                 content="",
@@ -5340,7 +5379,7 @@ def should_continue(messages):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
@@ -5380,7 +5419,7 @@ def should_continue(messages):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
@@ -5537,9 +5576,8 @@ class State(TypedDict):
     app = workflow.compile()
 
     assert app.invoke(HumanMessage(content="what is weather in sf")) == [
-        HumanMessage(
+        _AnyIdHumanMessage(
             content="what is weather in sf",
-            id="00000000-0000-4000-8000-000000000002",  # adds missing ids
         ),
         AIMessage(
             content="",
@@ -5552,11 +5590,10 @@ class State(TypedDict):
             ],
             id="ai1",  # respects ids passed in
         ),
-        ToolMessage(
+        _AnyIdToolMessage(
             content="result for query",
             name="search_api",
             tool_call_id="tool_call123",
-            id="00000000-0000-4000-8000-000000000010",
         ),
         AIMessage(
             content="",
@@ -5569,11 +5606,10 @@ class State(TypedDict):
             ],
             id="ai2",
         ),
-        ToolMessage(
+        _AnyIdToolMessage(
             content="result for another",
             name="search_api",
             tool_call_id="tool_call456",
-            id="00000000-0000-4000-8000-000000000018",
         ),
         AIMessage(content="answer", id="ai3"),
     ]
@@ -5741,11 +5777,10 @@ class State(TypedDict):
     assert [c for c in app_w_interrupt.stream(None, config)] == [
         {
             "tools": [
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
                     tool_call_id="tool_call123",
-                    id=AnyStr(),
                 )
             ]
         },
@@ -5778,7 +5813,7 @@ class State(TypedDict):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
@@ -5841,7 +5876,7 @@ class State(TypedDict):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
@@ -5974,11 +6009,10 @@ class State(TypedDict):
     assert [c for c in app_w_interrupt.stream(None, config)] == [
         {
             "tools": [
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
                     tool_call_id="tool_call123",
-                    id=AnyStr(),
                 )
             ]
         },
@@ -6011,7 +6045,7 @@ class State(TypedDict):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
@@ -6074,11 +6108,10 @@ class State(TypedDict):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
-                id=AnyStr(),
             ),
             AIMessage(content="answer", id="ai2"),
         ],
@@ -6114,7 +6147,7 @@ class State(TypedDict):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
                 tool_call_id="tool_call123",
@@ -6186,11 +6219,10 @@ class MoreState(TypedDict):
                         }
                     ],
                 ),
-                ToolMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
                     tool_call_id="tool_call123",
-                    id=AnyStr(),
                 ),
                 AIMessage(content="answer", id="ai2"),
                 _AnyIdAIMessage(content="an extra message"),
@@ -6234,10 +6266,9 @@ class MoreState(TypedDict):
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a different query",
                 name="search_api",
-                id="00000000-0000-4000-8000-000000000082",
                 tool_call_id="tool_call123",
             ),
             AIMessage(content="answer", id="ai2"),
@@ -7531,7 +7562,7 @@ def test_in_one_fan_out_state_graph_waiting_edge_custom_state_class_pydantic1(
     request: pytest.FixtureRequest,
     checkpointer_name: str,
 ) -> None:
-    from langchain_core.pydantic_v1 import BaseModel, ValidationError
+    from pydantic.v1 import BaseModel, ValidationError
 
     checkpointer = request.getfixturevalue(f"checkpointer_{checkpointer_name}")
     setup = mocker.Mock()
@@ -7632,6 +7663,7 @@ def decider(data: State) -> str:
 
     app = workflow.compile()
 
+    # because it's a v1 pydantic, we're using .schema() here instead of the new methods
     assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
     assert app.get_input_schema().schema() == snapshot
     assert app.get_output_schema().schema() == snapshot
@@ -7799,9 +7831,10 @@ def decider(data: State) -> str:
 
     app = workflow.compile()
 
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
-    assert app.get_input_schema().schema() == snapshot
-    assert app.get_output_schema().schema() == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+        assert app.get_input_schema().model_json_schema() == snapshot
+        assert app.get_output_schema().model_json_schema() == snapshot
 
     with pytest.raises(ValidationError), assert_ctx_once():
         app.invoke({"query": {}})
@@ -10103,7 +10136,7 @@ def test_weather_subgraph(
     from langchain_core.language_models.fake_chat_models import (
         FakeMessagesListChatModel,
     )
-    from langchain_core.messages import AIMessage, HumanMessage, ToolCall
+    from langchain_core.messages import AIMessage, ToolCall
     from langchain_core.tools import tool
 
     from langgraph.graph import MessagesState
@@ -10222,7 +10255,7 @@ def weather_graph(state: RouterState):
     state = graph.get_state(config)
     assert state == StateSnapshot(
         values={
-            "messages": [HumanMessage(content="what's the weather in sf", id=AnyStr())],
+            "messages": [_AnyIdHumanMessage(content="what's the weather in sf")],
             "route": "weather",
         },
         next=("weather_graph",),
@@ -10284,8 +10317,8 @@ def weather_graph(state: RouterState):
             {
                 "weather_graph": {
                     "messages": [
-                        HumanMessage(content="what's the weather in sf", id=AnyStr()),
-                        AIMessage(content="I'ts sunny in la!", id=AnyStr()),
+                        _AnyIdHumanMessage(content="what's the weather in sf"),
+                        _AnyIdAIMessage(content="I'ts sunny in la!"),
                     ]
                 }
             },
@@ -10307,7 +10340,7 @@ def weather_graph(state: RouterState):
     state = graph.get_state(config, subgraphs=True)
     assert state == StateSnapshot(
         values={
-            "messages": [HumanMessage(content="what's the weather in sf", id=AnyStr())],
+            "messages": [_AnyIdHumanMessage(content="what's the weather in sf")],
             "route": "weather",
         },
         next=("weather_graph",),
@@ -10339,9 +10372,7 @@ def weather_graph(state: RouterState):
                 state=StateSnapshot(
                     values={
                         "messages": [
-                            HumanMessage(
-                                content="what's the weather in sf", id=AnyStr()
-                            )
+                            _AnyIdHumanMessage(content="what's the weather in sf")
                         ],
                         "city": "San Francisco",
                     },
@@ -10386,7 +10417,7 @@ def weather_graph(state: RouterState):
     state = graph.get_state(config, subgraphs=True)
     assert state == StateSnapshot(
         values={
-            "messages": [HumanMessage(content="what's the weather in sf", id=AnyStr())],
+            "messages": [_AnyIdHumanMessage(content="what's the weather in sf")],
             "route": "weather",
         },
         next=("weather_graph",),
@@ -10418,10 +10449,8 @@ def weather_graph(state: RouterState):
                 state=StateSnapshot(
                     values={
                         "messages": [
-                            HumanMessage(
-                                content="what's the weather in sf", id=AnyStr()
-                            ),
-                            AIMessage(content="rainy", id=AnyStr()),
+                            _AnyIdHumanMessage(content="what's the weather in sf"),
+                            _AnyIdAIMessage(content="rainy"),
                         ],
                         "city": "San Francisco",
                     },
@@ -10473,8 +10502,8 @@ def weather_graph(state: RouterState):
             {
                 "weather_graph": {
                     "messages": [
-                        HumanMessage(content="what's the weather in sf", id=AnyStr()),
-                        AIMessage(content="rainy", id=AnyStr()),
+                        _AnyIdHumanMessage(content="what's the weather in sf"),
+                        _AnyIdAIMessage(content="rainy"),
                     ]
                 }
             },
@@ -10534,7 +10563,7 @@ def test_checkpoint_metadata() -> None:
     from langchain_core.language_models.fake_chat_models import (
         FakeMessagesListChatModel,
     )
-    from langchain_core.messages import AIMessage, AnyMessage, ToolMessage
+    from langchain_core.messages import AIMessage, AnyMessage
     from langchain_core.prompts import ChatPromptTemplate
     from langchain_core.tools import tool
 
@@ -10621,9 +10650,8 @@ def should_continue(data: BaseState) -> str:
     ) == {
         "messages": [
             _AnyIdHumanMessage(content="what is weather in sf"),
-            AIMessage(
+            _AnyIdAIMessage(
                 content="",
-                id=AnyStr(),
                 tool_calls=[
                     {
                         "name": "search_api",
@@ -10633,10 +10661,9 @@ def should_continue(data: BaseState) -> str:
                     }
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for query",
                 name="search_api",
-                id=AnyStr(),
                 tool_call_id="tool_call123",
             ),
             _AnyIdAIMessage(content="answer"),
@@ -10767,7 +10794,7 @@ def test_remove_message_from_node():
 
 def test_xray_lance(snapshot: SnapshotAssertion):
     from langchain_core.messages import AnyMessage, HumanMessage
-    from langchain_core.pydantic_v1 import BaseModel, Field
+    from pydantic import BaseModel, Field
 
     class Analyst(BaseModel):
         affiliation: str = Field(
diff --git a/libs/langgraph/tests/test_pregel_async.py b/libs/langgraph/tests/test_pregel_async.py
index a7e4b77e5..a9acaf478 100644
--- a/libs/langgraph/tests/test_pregel_async.py
+++ b/libs/langgraph/tests/test_pregel_async.py
@@ -1,5 +1,4 @@
 import asyncio
-import json
 import operator
 import re
 import sys
@@ -60,7 +59,6 @@
 from langgraph.prebuilt.chat_agent_executor import (
     create_tool_calling_executor,
 )
-from langgraph.prebuilt.tool_executor import ToolExecutor
 from langgraph.prebuilt.tool_node import ToolNode
 from langgraph.pregel import (
     Channel,
@@ -75,6 +73,7 @@
 from tests.conftest import (
     ALL_CHECKPOINTERS_ASYNC,
     ALL_CHECKPOINTERS_ASYNC_PLUS_NONE,
+    SHOULD_CHECK_SNAPSHOTS,
     awith_checkpointer,
 )
 from tests.fake_tracer import FakeTracer
@@ -82,7 +81,7 @@
     MemorySaverAssertCheckpointMetadata,
     MemorySaverNoPending,
 )
-from tests.messages import _AnyIdAIMessage, _AnyIdHumanMessage
+from tests.messages import _AnyIdAIMessage, _AnyIdHumanMessage, _AnyIdToolMessage
 
 pytestmark = pytest.mark.anyio
 
@@ -657,8 +656,15 @@ async def test_invoke_single_process_in_out(mocker: MockerFixture) -> None:
     graph.set_finish_point("add_one")
     gapp = graph.compile()
 
-    assert app.input_schema.schema() == {"title": "LangGraphInput", "type": "integer"}
-    assert app.output_schema.schema() == {"title": "LangGraphOutput", "type": "integer"}
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "integer",
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "integer",
+        }
     assert await app.ainvoke(2) == 3
     assert await app.ainvoke(2, output_keys=["output"]) == {"output": 3}
 
@@ -698,16 +704,24 @@ async def test_invoke_single_process_in_write_kwargs(mocker: MockerFixture) -> N
         input_channels="input",
     )
 
-    assert app.input_schema.schema() == {"title": "LangGraphInput", "type": "integer"}
-    assert app.output_schema.schema() == {
-        "title": "LangGraphOutput",
-        "type": "object",
-        "properties": {
-            "output": {"title": "Output", "type": "integer"},
-            "fixed": {"title": "Fixed", "type": "integer"},
-            "output_plus_one": {"title": "Output Plus One", "type": "integer"},
-        },
-    }
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "integer",
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "object",
+            "properties": {
+                "output": {"title": "Output", "type": "integer", "default": None},
+                "fixed": {"title": "Fixed", "type": "integer", "default": None},
+                "output_plus_one": {
+                    "title": "Output Plus One",
+                    "type": "integer",
+                    "default": None,
+                },
+            },
+        }
     assert await app.ainvoke(2) == {"output": 3, "fixed": 5, "output_plus_one": 4}
 
 
@@ -722,12 +736,18 @@ async def test_invoke_single_process_in_out_dict(mocker: MockerFixture) -> None:
         output_channels=["output"],
     )
 
-    assert app.input_schema.schema() == {"title": "LangGraphInput", "type": "integer"}
-    assert app.output_schema.schema() == {
-        "title": "LangGraphOutput",
-        "type": "object",
-        "properties": {"output": {"title": "Output", "type": "integer"}},
-    }
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "integer",
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "object",
+            "properties": {
+                "output": {"title": "Output", "type": "integer", "default": None}
+            },
+        }
     assert await app.ainvoke(2) == {"output": 3}
 
 
@@ -742,16 +762,21 @@ async def test_invoke_single_process_in_dict_out_dict(mocker: MockerFixture) ->
         output_channels=["output"],
     )
 
-    assert app.input_schema.schema() == {
-        "title": "LangGraphInput",
-        "type": "object",
-        "properties": {"input": {"title": "Input", "type": "integer"}},
-    }
-    assert app.output_schema.schema() == {
-        "title": "LangGraphOutput",
-        "type": "object",
-        "properties": {"output": {"title": "Output", "type": "integer"}},
-    }
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.input_schema.model_json_schema() == {
+            "title": "LangGraphInput",
+            "type": "object",
+            "properties": {
+                "input": {"title": "Input", "type": "integer", "default": None}
+            },
+        }
+        assert app.output_schema.model_json_schema() == {
+            "title": "LangGraphOutput",
+            "type": "object",
+            "properties": {
+                "output": {"title": "Output", "type": "integer", "default": None}
+            },
+        }
     assert await app.ainvoke({"input": 2}) == {"output": 3}
 
 
@@ -3823,7 +3848,7 @@ async def test_prebuilt_tool_chat() -> None:
     from langchain_core.language_models.fake_chat_models import (
         FakeMessagesListChatModel,
     )
-    from langchain_core.messages import AIMessage, HumanMessage, ToolMessage
+    from langchain_core.messages import AIMessage, HumanMessage
     from langchain_core.tools import tool
 
     class FakeFuntionChatModel(FakeMessagesListChatModel):
@@ -3876,8 +3901,7 @@ def search_api(query: str) -> str:
     ) == {
         "messages": [
             _AnyIdHumanMessage(content="what is weather in sf"),
-            AIMessage(
-                id=AnyStr(),
+            _AnyIdAIMessage(
                 content="",
                 tool_calls=[
                     {
@@ -3887,14 +3911,12 @@ def search_api(query: str) -> str:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for query",
                 name="search_api",
                 tool_call_id="tool_call123",
-                id=AnyStr(),
             ),
-            AIMessage(
-                id=AnyStr(),
+            _AnyIdAIMessage(
                 content="",
                 tool_calls=[
                     {
@@ -3909,13 +3931,12 @@ def search_api(query: str) -> str:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for another",
                 name="search_api",
                 tool_call_id="tool_call234",
-                id=AnyStr(),
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a third one",
                 name="search_api",
                 tool_call_id="tool_call567",
@@ -3934,8 +3955,7 @@ def search_api(query: str) -> str:
         {
             "agent": {
                 "messages": [
-                    AIMessage(
-                        id=AnyStr(),
+                    _AnyIdAIMessage(
                         content="",
                         tool_calls=[
                             {
@@ -3951,11 +3971,10 @@ def search_api(query: str) -> str:
         {
             "tools": {
                 "messages": [
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for query",
                         name="search_api",
                         tool_call_id="tool_call123",
-                        id=AnyStr(),
                     )
                 ]
             }
@@ -3963,8 +3982,7 @@ def search_api(query: str) -> str:
         {
             "agent": {
                 "messages": [
-                    AIMessage(
-                        id=AnyStr(),
+                    _AnyIdAIMessage(
                         content="",
                         tool_calls=[
                             {
@@ -3985,17 +4003,15 @@ def search_api(query: str) -> str:
         {
             "tools": {
                 "messages": [
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for another",
-                        tool_call_id="tool_call234",
                         name="search_api",
-                        id=AnyStr(),
+                        tool_call_id="tool_call234",
                     ),
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for a third one",
-                        tool_call_id="tool_call567",
                         name="search_api",
-                        id=AnyStr(),
+                        tool_call_id="tool_call567",
                     ),
                 ]
             }
@@ -4132,10 +4148,9 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for query",
                 name="search_api",
-                id=AnyStr(),
                 tool_call_id="tool_call123",
             ),
             AIMessage(
@@ -4154,16 +4169,14 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                     },
                 ],
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for another",
                 name="search_api",
-                id=AnyStr(),
                 tool_call_id="tool_call234",
             ),
-            ToolMessage(
+            _AnyIdToolMessage(
                 content="result for a third one",
                 name="search_api",
-                id=AnyStr(),
                 tool_call_id="tool_call567",
             ),
             AIMessage(content="answer", id="ai3"),
@@ -4193,10 +4206,9 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
         },
         {
             "tools": {
-                "messages": ToolMessage(
+                "messages": _AnyIdToolMessage(
                     content="result for query",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call123",
                 )
             }
@@ -4223,20 +4235,18 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
         },
         {
             "tools": {
-                "messages": ToolMessage(
+                "messages": _AnyIdToolMessage(
                     content="result for another",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call234",
                 )
             },
         },
         {
             "tools": {
-                "messages": ToolMessage(
+                "messages": _AnyIdToolMessage(
                     content="result for a third one",
                     name="search_api",
-                    id=AnyStr(),
                     tool_call_id="tool_call567",
                 ),
             },
@@ -4378,10 +4388,9 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
         assert [c async for c in app_w_interrupt.astream(None, config)] == [
             {
                 "tools": {
-                    "messages": ToolMessage(
+                    "messages": _AnyIdToolMessage(
                         content="result for a different query",
                         name="search_api",
-                        id=AnyStr(),
                         tool_call_id="tool_call123",
                     )
                 }
@@ -4424,10 +4433,9 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                             },
                         ],
                     ),
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for a different query",
                         name="search_api",
-                        id=AnyStr(),
                         tool_call_id="tool_call123",
                     ),
                     AIMessage(
@@ -4504,10 +4512,9 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                             },
                         ],
                     ),
-                    ToolMessage(
+                    _AnyIdToolMessage(
                         content="result for a different query",
                         name="search_api",
-                        id=AnyStr(),
                         tool_call_id="tool_call123",
                     ),
                     AIMessage(content="answer", id="ai2"),
@@ -4522,7 +4529,9 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
                 "source": "update",
                 "step": 5,
                 "writes": {
-                    "agent": {"messages": AIMessage(content="answer", id="ai2")}
+                    "agent": {
+                        "messages": AIMessage(content="answer", id="ai2"),
+                    }
                 },
             },
             parent_config=[
@@ -4533,11 +4542,10 @@ async def tools_node(input: ToolInput, config: RunnableConfig) -> AgentState:
 
 @pytest.mark.parametrize("checkpointer_name", ALL_CHECKPOINTERS_ASYNC)
 async def test_message_graph(checkpointer_name: str) -> None:
-    from langchain_core.agents import AgentAction
     from langchain_core.language_models.fake_chat_models import (
         FakeMessagesListChatModel,
     )
-    from langchain_core.messages import AIMessage, FunctionMessage, HumanMessage
+    from langchain_core.messages import AIMessage, HumanMessage
     from langchain_core.tools import tool
 
     class FakeFuntionChatModel(FakeMessagesListChatModel):
@@ -4555,63 +4563,46 @@ def search_api(query: str) -> str:
         responses=[
             AIMessage(
                 content="",
-                additional_kwargs={
-                    "function_call": {
+                tool_calls=[
+                    {
+                        "id": "tool_call123",
                         "name": "search_api",
-                        "arguments": json.dumps("query"),
+                        "args": {"query": "query"},
                     }
-                },
+                ],
                 id="ai1",
             ),
             AIMessage(
                 content="",
-                additional_kwargs={
-                    "function_call": {
+                tool_calls=[
+                    {
+                        "id": "tool_call456",
                         "name": "search_api",
-                        "arguments": json.dumps("another"),
+                        "args": {"query": "another"},
                     }
-                },
+                ],
                 id="ai2",
             ),
             AIMessage(content="answer", id="ai3"),
         ]
     )
 
-    tool_executor = ToolExecutor(tools)
-
     # Define the function that determines whether to continue or not
     def should_continue(messages):
         last_message = messages[-1]
         # If there is no function call, then we finish
-        if "function_call" not in last_message.additional_kwargs:
+        if not last_message.tool_calls:
             return "end"
         # Otherwise if there is, we continue
         else:
             return "continue"
 
-    async def call_tool(messages):
-        # Based on the continue condition
-        # we know the last message involves a function call
-        last_message = messages[-1]
-        # We construct an AgentAction from the function_call
-        action = AgentAction(
-            tool=last_message.additional_kwargs["function_call"]["name"],
-            tool_input=json.loads(
-                last_message.additional_kwargs["function_call"]["arguments"]
-            ),
-            log="",
-        )
-        # We call the tool_executor and get back a response
-        response = await tool_executor.ainvoke(action)
-        # We use the response to create a FunctionMessage
-        return FunctionMessage(content=str(response), name=action.tool)
-
     # Define a new graph
     workflow = MessageGraph()
 
     # Define the two nodes we will cycle between
     workflow.add_node("agent", model)
-    workflow.add_node("tools", call_tool)
+    workflow.add_node("tools", ToolNode(tools))
 
     # Set the entrypoint as `agent`
     # This means that this node is the first one called
@@ -4648,23 +4639,41 @@ async def call_tool(messages):
     app = workflow.compile()
 
     assert await app.ainvoke(HumanMessage(content="what is weather in sf")) == [
-        _AnyIdHumanMessage(content="what is weather in sf"),
+        _AnyIdHumanMessage(
+            content="what is weather in sf",
+        ),
         AIMessage(
             content="",
-            additional_kwargs={
-                "function_call": {"name": "search_api", "arguments": '"query"'}
-            },
-            id="ai1",
+            tool_calls=[
+                {
+                    "id": "tool_call123",
+                    "name": "search_api",
+                    "args": {"query": "query"},
+                }
+            ],
+            id="ai1",  # respects ids passed in
+        ),
+        _AnyIdToolMessage(
+            content="result for query",
+            name="search_api",
+            tool_call_id="tool_call123",
         ),
-        FunctionMessage(content="result for query", name="search_api", id=AnyStr()),
         AIMessage(
             content="",
-            additional_kwargs={
-                "function_call": {"name": "search_api", "arguments": '"another"'}
-            },
+            tool_calls=[
+                {
+                    "id": "tool_call456",
+                    "name": "search_api",
+                    "args": {"query": "another"},
+                }
+            ],
             id="ai2",
         ),
-        FunctionMessage(content="result for another", name="search_api", id=AnyStr()),
+        _AnyIdToolMessage(
+            content="result for another",
+            name="search_api",
+            tool_call_id="tool_call456",
+        ),
         AIMessage(content="answer", id="ai3"),
     ]
 
@@ -4674,30 +4683,46 @@ async def call_tool(messages):
         {
             "agent": AIMessage(
                 content="",
-                additional_kwargs={
-                    "function_call": {"name": "search_api", "arguments": '"query"'}
-                },
+                tool_calls=[
+                    {
+                        "id": "tool_call123",
+                        "name": "search_api",
+                        "args": {"query": "query"},
+                    }
+                ],
                 id="ai1",
             )
         },
         {
-            "tools": FunctionMessage(
-                content="result for query", name="search_api", id=AnyStr()
-            )
+            "tools": [
+                _AnyIdToolMessage(
+                    content="result for query",
+                    name="search_api",
+                    tool_call_id="tool_call123",
+                )
+            ]
         },
         {
             "agent": AIMessage(
                 content="",
-                additional_kwargs={
-                    "function_call": {"name": "search_api", "arguments": '"another"'}
-                },
+                tool_calls=[
+                    {
+                        "id": "tool_call456",
+                        "name": "search_api",
+                        "args": {"query": "another"},
+                    }
+                ],
                 id="ai2",
             )
         },
         {
-            "tools": FunctionMessage(
-                content="result for another", name="search_api", id=AnyStr()
-            )
+            "tools": [
+                _AnyIdToolMessage(
+                    content="result for another",
+                    name="search_api",
+                    tool_call_id="tool_call456",
+                )
+            ]
         },
         {"agent": AIMessage(content="answer", id="ai3")},
     ]
@@ -4718,9 +4743,13 @@ async def call_tool(messages):
             {
                 "agent": AIMessage(
                     content="",
-                    additional_kwargs={
-                        "function_call": {"name": "search_api", "arguments": '"query"'}
-                    },
+                    tool_calls=[
+                        {
+                            "id": "tool_call123",
+                            "name": "search_api",
+                            "args": {"query": "query"},
+                        }
+                    ],
                     id="ai1",
                 )
             },
@@ -4732,9 +4761,13 @@ async def call_tool(messages):
                 _AnyIdHumanMessage(content="what is weather in sf"),
                 AIMessage(
                     content="",
-                    additional_kwargs={
-                        "function_call": {"name": "search_api", "arguments": '"query"'}
-                    },
+                    tool_calls=[
+                        {
+                            "id": "tool_call123",
+                            "name": "search_api",
+                            "args": {"query": "query"},
+                        }
+                    ],
                     id="ai1",
                 ),
             ],
@@ -4749,12 +4782,13 @@ async def call_tool(messages):
                 "writes": {
                     "agent": AIMessage(
                         content="",
-                        additional_kwargs={
-                            "function_call": {
+                        tool_calls=[
+                            {
+                                "id": "tool_call123",
                                 "name": "search_api",
-                                "arguments": '"query"',
+                                "args": {"query": "query"},
                             }
-                        },
+                        ],
                         id="ai1",
                     )
                 },
@@ -4766,9 +4800,7 @@ async def call_tool(messages):
 
         # modify ai message
         last_message = (await app_w_interrupt.aget_state(config)).values[-1]
-        last_message.additional_kwargs["function_call"]["arguments"] = (
-            '"a different query"'
-        )
+        last_message.tool_calls[0]["args"] = {"query": "a different query"}
         await app_w_interrupt.aupdate_state(config, last_message)
 
         # message was replaced instead of appended
@@ -4778,13 +4810,14 @@ async def call_tool(messages):
                 _AnyIdHumanMessage(content="what is weather in sf"),
                 AIMessage(
                     content="",
-                    additional_kwargs={
-                        "function_call": {
+                    id="ai1",
+                    tool_calls=[
+                        {
+                            "id": "tool_call123",
                             "name": "search_api",
-                            "arguments": '"a different query"',
+                            "args": {"query": "a different query"},
                         }
-                    },
-                    id="ai1",
+                    ],
                 ),
             ],
             tasks=(PregelTask(AnyStr(), "tools"),),
@@ -4798,12 +4831,13 @@ async def call_tool(messages):
                 "writes": {
                     "agent": AIMessage(
                         content="",
-                        additional_kwargs={
-                            "function_call": {
+                        tool_calls=[
+                            {
+                                "id": "tool_call123",
                                 "name": "search_api",
-                                "arguments": '"a different query"',
+                                "args": {"query": "a different query"},
                             }
-                        },
+                        ],
                         id="ai1",
                     )
                 },
@@ -4815,21 +4849,24 @@ async def call_tool(messages):
 
         assert [c async for c in app_w_interrupt.astream(None, config)] == [
             {
-                "tools": FunctionMessage(
-                    content="result for a different query",
-                    name="search_api",
-                    id=AnyStr(),
-                )
+                "tools": [
+                    _AnyIdToolMessage(
+                        content="result for a different query",
+                        name="search_api",
+                        tool_call_id="tool_call123",
+                    )
+                ]
             },
             {
                 "agent": AIMessage(
                     content="",
-                    additional_kwargs={
-                        "function_call": {
+                    tool_calls=[
+                        {
+                            "id": "tool_call456",
                             "name": "search_api",
-                            "arguments": '"another"',
+                            "args": {"query": "another"},
                         }
-                    },
+                    ],
                     id="ai2",
                 )
             },
@@ -4841,27 +4878,29 @@ async def call_tool(messages):
                 _AnyIdHumanMessage(content="what is weather in sf"),
                 AIMessage(
                     content="",
-                    additional_kwargs={
-                        "function_call": {
+                    id="ai1",
+                    tool_calls=[
+                        {
+                            "id": "tool_call123",
                             "name": "search_api",
-                            "arguments": '"a different query"',
+                            "args": {"query": "a different query"},
                         }
-                    },
-                    id="ai1",
+                    ],
                 ),
-                FunctionMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
-                    id=AnyStr(),
+                    tool_call_id="tool_call123",
                 ),
                 AIMessage(
                     content="",
-                    additional_kwargs={
-                        "function_call": {
+                    tool_calls=[
+                        {
+                            "id": "tool_call456",
                             "name": "search_api",
-                            "arguments": '"another"',
+                            "args": {"query": "another"},
                         }
-                    },
+                    ],
                     id="ai2",
                 ),
             ],
@@ -4876,12 +4915,13 @@ async def call_tool(messages):
                 "writes": {
                     "agent": AIMessage(
                         content="",
-                        additional_kwargs={
-                            "function_call": {
+                        tool_calls=[
+                            {
+                                "id": "tool_call456",
                                 "name": "search_api",
-                                "arguments": '"another"',
+                                "args": {"query": "another"},
                             }
-                        },
+                        ],
                         id="ai2",
                     )
                 },
@@ -4903,18 +4943,19 @@ async def call_tool(messages):
                 _AnyIdHumanMessage(content="what is weather in sf"),
                 AIMessage(
                     content="",
-                    additional_kwargs={
-                        "function_call": {
+                    id="ai1",
+                    tool_calls=[
+                        {
+                            "id": "tool_call123",
                             "name": "search_api",
-                            "arguments": '"a different query"',
+                            "args": {"query": "a different query"},
                         }
-                    },
-                    id="ai1",
+                    ],
                 ),
-                FunctionMessage(
+                _AnyIdToolMessage(
                     content="result for a different query",
                     name="search_api",
-                    id=AnyStr(),
+                    tool_call_id="tool_call123",
                 ),
                 AIMessage(content="answer", id="ai2"),
             ],
@@ -6215,7 +6256,7 @@ async def qa(data: State) -> State:
 async def test_in_one_fan_out_state_graph_waiting_edge_custom_state_class(
     snapshot: SnapshotAssertion, mocker: MockerFixture, checkpointer_name: str
 ) -> None:
-    from langchain_core.pydantic_v1 import BaseModel, ValidationError
+    from pydantic.v1 import BaseModel, ValidationError
 
     setup = mocker.Mock()
     teardown = mocker.Mock()
@@ -6467,9 +6508,10 @@ async def decider(data: State) -> str:
 
     app = workflow.compile()
 
-    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
-    assert app.get_input_schema().schema() == snapshot
-    assert app.get_output_schema().schema() == snapshot
+    if SHOULD_CHECK_SNAPSHOTS:
+        assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
+        assert app.get_input_schema().model_json_schema() == snapshot
+        assert app.get_output_schema().model_json_schema() == snapshot
 
     with pytest.raises(ValidationError):
         await app.ainvoke({"query": {}})
@@ -8688,7 +8730,7 @@ async def test_weather_subgraph(
     from langchain_core.language_models.fake_chat_models import (
         FakeMessagesListChatModel,
     )
-    from langchain_core.messages import AIMessage, HumanMessage, ToolCall
+    from langchain_core.messages import AIMessage, ToolCall
     from langchain_core.tools import tool
 
     from langgraph.graph import MessagesState
@@ -8812,9 +8854,7 @@ def get_first_in_list():
         state = await graph.aget_state(config)
         assert state == StateSnapshot(
             values={
-                "messages": [
-                    HumanMessage(content="what's the weather in sf", id=AnyStr())
-                ],
+                "messages": [_AnyIdHumanMessage(content="what's the weather in sf")],
                 "route": "weather",
             },
             next=("weather_graph",),
@@ -8880,10 +8920,8 @@ def get_first_in_list():
                 {
                     "weather_graph": {
                         "messages": [
-                            HumanMessage(
-                                content="what's the weather in sf", id=AnyStr()
-                            ),
-                            AIMessage(content="I'ts sunny in la!", id=AnyStr()),
+                            _AnyIdHumanMessage(content="what's the weather in sf"),
+                            _AnyIdAIMessage(content="I'ts sunny in la!"),
                         ]
                     }
                 },
@@ -8905,9 +8943,7 @@ def get_first_in_list():
         state = await graph.aget_state(config, subgraphs=True)
         assert state == StateSnapshot(
             values={
-                "messages": [
-                    HumanMessage(content="what's the weather in sf", id=AnyStr())
-                ],
+                "messages": [_AnyIdHumanMessage(content="what's the weather in sf")],
                 "route": "weather",
             },
             next=("weather_graph",),
@@ -8939,9 +8975,7 @@ def get_first_in_list():
                     state=StateSnapshot(
                         values={
                             "messages": [
-                                HumanMessage(
-                                    content="what's the weather in sf", id=AnyStr()
-                                )
+                                _AnyIdHumanMessage(content="what's the weather in sf")
                             ],
                             "city": "San Francisco",
                         },
@@ -8986,9 +9020,7 @@ def get_first_in_list():
         state = await graph.aget_state(config, subgraphs=True)
         assert state == StateSnapshot(
             values={
-                "messages": [
-                    HumanMessage(content="what's the weather in sf", id=AnyStr())
-                ],
+                "messages": [_AnyIdHumanMessage(content="what's the weather in sf")],
                 "route": "weather",
             },
             next=("weather_graph",),
@@ -9020,10 +9052,8 @@ def get_first_in_list():
                     state=StateSnapshot(
                         values={
                             "messages": [
-                                HumanMessage(
-                                    content="what's the weather in sf", id=AnyStr()
-                                ),
-                                AIMessage(content="rainy", id=AnyStr()),
+                                _AnyIdHumanMessage(content="what's the weather in sf"),
+                                _AnyIdAIMessage(content="rainy"),
                             ],
                             "city": "San Francisco",
                         },
@@ -9077,10 +9107,8 @@ def get_first_in_list():
                 {
                     "weather_graph": {
                         "messages": [
-                            HumanMessage(
-                                content="what's the weather in sf", id=AnyStr()
-                            ),
-                            AIMessage(content="rainy", id=AnyStr()),
+                            _AnyIdHumanMessage(content="what's the weather in sf"),
+                            _AnyIdAIMessage(content="rainy"),
                         ]
                     }
                 },