diff --git a/libs/sdk-js/package.json b/libs/sdk-js/package.json
index 71a0976bb..8b9718872 100644
--- a/libs/sdk-js/package.json
+++ b/libs/sdk-js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@langchain/langgraph-sdk",
-  "version": "0.0.20",
+  "version": "0.0.21",
   "description": "Client library for interacting with the LangGraph API",
   "type": "module",
   "packageManager": "yarn@1.22.19",
diff --git a/libs/sdk-js/src/schema.ts b/libs/sdk-js/src/schema.ts
index 86a668d01..52908a47b 100644
--- a/libs/sdk-js/src/schema.ts
+++ b/libs/sdk-js/src/schema.ts
@@ -79,7 +79,17 @@ export interface GraphSchema {
 
 export type Subgraphs = Record<string, GraphSchema>;
 
-export type Metadata = Optional<Record<string, unknown>>;
+export type Metadata = Optional<{
+  source?: "input" | "loop" | "update" | (string & {});
+
+  step?: number;
+
+  writes?: Record<string, unknown> | null;
+
+  parents?: Record<string, string>;
+
+  [key: string]: unknown;
+}>;
 
 export interface AssistantBase {
   /** The ID of the assistant. */
@@ -110,7 +120,22 @@ export interface Assistant extends AssistantBase {
   /** The name of the assistant */
   name: string;
 }
-export type AssistantGraph = Record<string, Array<Record<string, unknown>>>;
+
+export interface AssistantGraph {
+  nodes: Array<{
+    id: string | number;
+    name?: string;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    data?: Record<string, any> | string;
+    metadata?: unknown;
+  }>;
+  edges: Array<{
+    source: string;
+    target: string;
+    data?: string;
+    conditional?: boolean;
+  }>;
+}
 
 export interface Thread<ValuesType = DefaultValues> {
   /** The ID of the thread. */
@@ -184,7 +209,7 @@ export interface ThreadTask {
   id: string;
   name: string;
   error: Optional<string>;
-  interrupts: Array<Record<string, unknown>>;
+  interrupts: Array<{ value: unknown; when: "during" }>;
   checkpoint: Optional<Checkpoint>;
   state: Optional<ThreadState>;
 }
diff --git a/libs/sdk-js/src/types.ts b/libs/sdk-js/src/types.ts
index 3f4e90764..93b025fa4 100644
--- a/libs/sdk-js/src/types.ts
+++ b/libs/sdk-js/src/types.ts
@@ -45,12 +45,12 @@ interface RunsInvokePayload {
   /**
    * Interrupt execution before entering these nodes.
    */
-  interruptBefore?: string[];
+  interruptBefore?: "*" | string[];
 
   /**
    * Interrupt execution after leaving these nodes.
    */
-  interruptAfter?: string[];
+  interruptAfter?: "*" | string[];
 
   /**
    * Strategy to handle concurrent runs on the same thread. Only relevant if