diff --git a/.gitignore b/.gitignore
index 6e70579..b48275f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -163,4 +163,5 @@ cython_debug/
 *.DS_Store
 
 *.http
-.idea/httpRequests*
\ No newline at end of file
+.idea/httpRequests*
+.idea/dataSources*
\ No newline at end of file
diff --git a/.idea/runConfigurations/Python_tests_in_tests.xml b/.idea/runConfigurations/Python_tests_in__Users_ivsouza_Github_IvanildoBarauna_currency_quote_wrapper_tests.xml
similarity index 83%
rename from .idea/runConfigurations/Python_tests_in_tests.xml
rename to .idea/runConfigurations/Python_tests_in__Users_ivsouza_Github_IvanildoBarauna_currency_quote_wrapper_tests.xml
index 213cc6a..ecf0a42 100644
--- a/.idea/runConfigurations/Python_tests_in_tests.xml
+++ b/.idea/runConfigurations/Python_tests_in__Users_ivsouza_Github_IvanildoBarauna_currency_quote_wrapper_tests.xml
@@ -1,5 +1,5 @@
 <component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="Python tests in tests" type="tests" factoryName="Autodetect" nameIsGenerated="true">
+  <configuration default="false" name="Python tests in /Users/ivsouza/Github/IvanildoBarauna/currency-quote-wrapper/tests" type="tests" factoryName="Autodetect" nameIsGenerated="true">
     <module name="currency-quote-wrapper" />
     <option name="ENV_FILES" value="" />
     <option name="INTERPRETER_OPTIONS" value="" />
diff --git a/.idea/scopes/currency_quote_wrapper.xml b/.idea/scopes/currency_quote_wrapper.xml
new file mode 100644
index 0000000..20ba399
--- /dev/null
+++ b/.idea/scopes/currency_quote_wrapper.xml
@@ -0,0 +1,3 @@
+<component name="DependencyValidationManager">
+  <scope name="currency-quote-wrapper" pattern="file[currency-quote-wrapper]:src/*" />
+</component>
\ No newline at end of file
diff --git a/.xml b/.xml
new file mode 100644
index 0000000..ae0f226
--- /dev/null
+++ b/.xml
@@ -0,0 +1,231 @@
+<?xml version="1.0" ?>
+<coverage version="6.5.0" timestamp="1719423325108" lines-valid="137" lines-covered="130" line-rate="0.9489" branches-covered="0" branches-valid="0" branch-rate="0" complexity="0">
+	<!-- Generated by coverage.py: https://coverage.readthedocs.io -->
+	<!-- Based on https://raw.githubusercontent.com/cobertura/web/master/htdocs/xml/coverage-04.dtd -->
+	<sources>
+		<source>/Users/ivsouza/Github/IvanildoBarauna/currency-quote-wrapper</source>
+	</sources>
+	<packages>
+		<package name="src.currency_quote.adapters.outbound" line-rate="0.963" branch-rate="0" complexity="0">
+			<classes>
+				<class name="currency_api.py" filename="src/currency_quote/adapters/outbound/currency_api.py" complexity="0" line-rate="0.9231" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="1" hits="1"/>
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+						<line number="19" hits="1"/>
+						<line number="21" hits="1"/>
+						<line number="22" hits="0"/>
+					</lines>
+				</class>
+				<class name="currency_validator_api.py" filename="src/currency_quote/adapters/outbound/currency_validator_api.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="2" hits="1"/>
+						<line number="3" hits="1"/>
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+						<line number="23" hits="1"/>
+						<line number="24" hits="1"/>
+						<line number="26" hits="1"/>
+					</lines>
+				</class>
+			</classes>
+		</package>
+		<package name="src.currency_quote.application.ports.outbound" line-rate="0.7368" branch-rate="0" complexity="0">
+			<classes>
+				<class name="currency_repository.py" filename="src/currency_quote/application/ports/outbound/currency_repository.py" complexity="0" line-rate="0.7273" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="2" hits="1"/>
+						<line number="5" hits="1"/>
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+						<line number="14" hits="1"/>
+						<line number="15" hits="1"/>
+						<line number="16" hits="0"/>
+					</lines>
+				</class>
+				<class name="currency_validator_repository.py" filename="src/currency_quote/application/ports/outbound/currency_validator_repository.py" complexity="0" line-rate="0.75" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="2" hits="1"/>
+						<line number="5" hits="1"/>
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+						<line number="8" hits="1"/>
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+						<line number="11" hits="1"/>
+						<line number="12" hits="1"/>
+						<line number="13" hits="0"/>
+					</lines>
+				</class>
+			</classes>
+		</package>
+		<package name="src.currency_quote.application.use_cases" line-rate="1" branch-rate="0" complexity="0">
+			<classes>
+				<class name="get_last_currency_quote.py" filename="src/currency_quote/application/use_cases/get_last_currency_quote.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="2" hits="1"/>
+						<line number="3" hits="1"/>
+						<line number="4" hits="1"/>
+						<line number="7" hits="1"/>
+						<line number="8" hits="1"/>
+						<line number="9" hits="1"/>
+						<line number="10" hits="1"/>
+						<line number="11" hits="1"/>
+						<line number="15" hits="1"/>
+					</lines>
+				</class>
+				<class name="test_get_last_currency_quote.py" filename="src/currency_quote/application/use_cases/test_get_last_currency_quote.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="1" hits="1"/>
+						<line number="2" hits="1"/>
+						<line number="5" hits="1"/>
+						<line number="6" hits="1"/>
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+						<line number="16" hits="1"/>
+						<line number="17" hits="1"/>
+						<line number="20" hits="1"/>
+						<line number="21" hits="1"/>
+						<line number="22" hits="1"/>
+						<line number="23" hits="1"/>
+					</lines>
+				</class>
+				<class name="test_validate_currency.py" filename="src/currency_quote/application/use_cases/test_validate_currency.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="1" hits="1"/>
+						<line number="2" hits="1"/>
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+						<line number="6" hits="1"/>
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+						<line number="18" hits="1"/>
+						<line number="19" hits="1"/>
+						<line number="20" hits="1"/>
+						<line number="21" hits="1"/>
+					</lines>
+				</class>
+				<class name="validate_currency.py" filename="src/currency_quote/application/use_cases/validate_currency.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="2" hits="1"/>
+						<line number="3" hits="1"/>
+						<line number="4" hits="1"/>
+						<line number="7" hits="1"/>
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+						<line number="10" hits="1"/>
+						<line number="11" hits="1"/>
+						<line number="15" hits="1"/>
+					</lines>
+				</class>
+			</classes>
+		</package>
+		<package name="src.currency_quote.config" line-rate="1" branch-rate="0" complexity="0">
+			<classes>
+				<class name="endpoints.py" filename="src/currency_quote/config/endpoints.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="1" hits="1"/>
+						<line number="2" hits="1"/>
+						<line number="3" hits="1"/>
+						<line number="4" hits="1"/>
+						<line number="5" hits="1"/>
+						<line number="6" hits="1"/>
+						<line number="7" hits="1"/>
+					</lines>
+				</class>
+			</classes>
+		</package>
+		<package name="src.currency_quote.domain.entities" line-rate="1" branch-rate="0" complexity="0">
+			<classes>
+				<class name="currency.py" filename="src/currency_quote/domain/entities/currency.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="3" hits="1"/>
+						<line number="4" hits="1"/>
+						<line number="5" hits="1"/>
+						<line number="7" hits="1"/>
+						<line number="8" hits="1"/>
+					</lines>
+				</class>
+			</classes>
+		</package>
+		<package name="src.currency_quote.domain.services" line-rate="0.9655" branch-rate="0" complexity="0">
+			<classes>
+				<class name="get_currency_quote.py" filename="src/currency_quote/domain/services/get_currency_quote.py" complexity="0" line-rate="0.9333" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="1" hits="1"/>
+						<line number="2" hits="1"/>
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+						<line number="19" hits="1"/>
+						<line number="20" hits="1"/>
+						<line number="21" hits="1"/>
+					</lines>
+				</class>
+				<class name="validate_currency.py" filename="src/currency_quote/domain/services/validate_currency.py" complexity="0" line-rate="1" branch-rate="0">
+					<methods/>
+					<lines>
+						<line number="2" hits="1"/>
+						<line number="3" hits="1"/>
+						<line number="4" hits="1"/>
+						<line number="7" hits="1"/>
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+						<line number="18" hits="1"/>
+						<line number="19" hits="1"/>
+						<line number="21" hits="1"/>
+					</lines>
+				</class>
+			</classes>
+		</package>
+	</packages>
+</coverage>
diff --git a/README.md b/README.md
index fe70296..abafe1d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,9 @@
-# currency-quote-wrapper: Complete solution for extracting currency pair quotes data
+# currency-quote-wrapper: Complete solution for extracting currency pair quotes data.
+
+## Project description
+Complete solution for extracting currency pair quotes data.
+With comprehensive testing, parameter validation, flexible configuration management, Hexagonal Architecture, CI/CD pipelines, code quality tools, and detailed documentation.
+
 
 [![PyPI - Status](https://img.shields.io/pypi/status/currency-quote?style=for-the-badge&logo=pypi)](https://pypi.org/project/currency-quote/)
 
@@ -12,6 +17,7 @@
 [![CD](https://img.shields.io/github/actions/workflow/status/IvanildoBarauna/currency-quote-wrapper/CD.yaml?&style=for-the-badge&logo=githubactions&cacheSeconds=60&event=release&label=Package+publication)](https://github.com/IvanildoBarauna/currency-quote-wrapper/actions/workflows/CD.yaml)
 
 [![Codecov](https://img.shields.io/codecov/c/github/IvanildoBarauna/currency-quote-wrapper?style=for-the-badge&logo=codecov)](https://app.codecov.io/gh/IvanildoBarauna/currency-quote-wrapper)
+
 ## Project Stack
 
 ![Python](https://img.shields.io/badge/-Python-05122A?style=flat&logo=python)&nbsp;
@@ -24,9 +30,21 @@
 ![pytest](https://img.shields.io/badge/-pytest-05122A?style=flat&logo=pytest)&nbsp;
 
 
-## Project description
+## Project Highlights:
+
+- **Comprehensive Testing:** Development of tests to ensure the quality and robustness of the code
+
+- **Parameter Validation:** Sending valid parameters based on the request data source itself, ensuring the integrity and accuracy of the information processed.
+
+- **Configuration Management:** Use of a configuration module to manage endpoints, retry times and number of attempts, providing flexibility and ease of adjustment.
 
-* Complete solution for extracting currency pair quotes data
+- **Hexagonal Architecture:** Adoption of Hexagonal Architecture to decouple the core logic from external dependencies, ensuring that any current data source can be replaced seamlessly in case of unavailability. This is facilitated by the use of adapters, which act as intermediaries between the core application and the external services.
+
+- **Cotinuous Integration** and Continuous Deployment: Use of CI/CD pipelines to automate the build, test and deployment processes, ensuring that the application is always up to date and ready for use.
+
+- **Code Quality:** Use of code quality tools such as linters and formatters to ensure that the codebase is clean, consistent and easy to read.
+
+- **Documentation:** Creation of detailed documentation to facilitate the understanding and use of the application, including installation instructions, usage examples and troubleshooting guides.
 
 ## Contributing
 
@@ -35,27 +53,21 @@ See the following docs:
 - [Contributing Guide](https://github.com/IvanildoBarauna/currency-quote-wrapper/blob/main/CONTRIBUTING.md)
 - [Code Of Conduct](https://github.com/IvanildoBarauna/currency-quote-wrapper/blob/main/CODE_OF_CONDUCT.md)
 
-## Project Highlights:
-
-- Comprehensive Testing: Development of tests to ensure the quality and robustness of the code
-
-- Parameter Validation: Sending valid parameters based on the request data source itself, ensuring the integrity and accuracy of the information processed.
 
-- Configuration Management: Use of a configuration module to manage endpoints, retry times and number of attempts, providing flexibility and ease of adjustment.
-
-## How to use it
+## How to get currency quotes using this library
 
 ``` python
 ## Importing library
-from currency_quote CurrencyQuote
+from currency_quote import CurrencyQuote, ClientBuilder
 
 # For get the last quote of one currency
-client = CurrencyQuote(['USD-BRL'])
+client = ClientBuilder(currency=CurrencyQuote(currency_list=["USD-BRL"]))
 # or get quotes of multiple currencies
-client = CurrencyQuote(['USD-BRL', 'EUR-BRL'])
+client = ClientBuilder(
+    currency=CurrencyQuote(currency_list=['USD-BRL', 'EUR-BRL'])
+)
 
 # Get the last quote
-last_quote = client.get_last_quote()
+print(client.get_last_quote())
 # Get history quote of currency
-history_quote = client.get_history_quote(reference_date=20240626)
-
+print(client.get_history_quote(reference_date=20220101))
diff --git a/poetry.lock b/poetry.lock
index 200ea41..f2c3733 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
 
 [[package]]
 name = "api-to-dataframe"
diff --git a/pyproject.toml b/pyproject.toml
index eb05500..6de1614 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,13 +1,13 @@
 [tool.poetry]
 name = "currency-quote"
-version = "1.0.1"
-description = "Complete solution for extracting currency pair quotes data"
+version = "2.0.0"
+description = "Complete solution for extracting currency pair quotes data. With comprehensive testing, parameter validation, flexible configuration management, Hexagonal Architecture, CI/CD pipelines, code quality tools, and detailed documentation."
 authors = ["IvanildoBarauna <ivanildo.jnr@outlook.com>"]
 readme = "README.md"
 license = "MIT"
 
 classifiers=[
-    "Development Status :: 2 - Pre-Alpha",
+    "Development Status :: 3 - Alpha",
     "Intended Audience :: Developers",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
diff --git a/src/currency_quote/__init__.py b/src/currency_quote/__init__.py
index 910a393..50bd4fc 100644
--- a/src/currency_quote/__init__.py
+++ b/src/currency_quote/__init__.py
@@ -1,47 +1,2 @@
-from .config.endpoints import API
-from api_to_dataframe import ClientBuilder, RetryStrategies
-import datetime
-
-
-class CurrencyQuote:
-    def __init__(self, currency_list: list):
-        self.currency_code = currency_list
-
-    @staticmethod
-    def _get_history_quote(*args, reference_date: int):
-
-        result = []
-
-        for currency_code in args:
-            url = \
-                (f"{API.ENDPOINT_HISTORY_COTATION}"
-                 f"{currency_code}"
-                 f"/?start_date={reference_date}&end_date={reference_date}")
-
-            client = ClientBuilder(
-                endpoint=url,
-                retry_strategy=RetryStrategies.LinearRetryStrategy
-            )
-
-            response = client.get_api_data()
-
-            result.append(response[0])
-
-        return result
-
-    def get_history_quote(self, reference_date: int):
-        today = int(datetime.datetime.now().strftime("%Y%m%d"))
-        if reference_date > today:
-            raise ValueError(
-                f"Reference date: {reference_date} is not valid. "
-                f"Make sure you give a correct reference date, e.g.: {today}"
-            )
-
-        if reference_date < 20160111:
-            raise ValueError(
-                f"The data is only available from 2016-01-11."
-            )
-
-        hist_quote = self._get_history_quote(*self._validate_currency_code(), reference_date=reference_date)
-
-        return hist_quote
+from currency_quote.adapters.inbound.lib_controller import ClientBuilder
+from currency_quote.domain.entities.currency import CurrencyQuote
diff --git a/src/currency_quote/__init__2.py b/src/currency_quote/__init__2.py
deleted file mode 100644
index 7a294b4..0000000
--- a/src/currency_quote/__init__2.py
+++ /dev/null
@@ -1,16 +0,0 @@
-from .adapters.outbound.currency_api import CurrencyAPI
-from .adapters.inbound.controller import CurrencyController
-from .domain.services.get_currency_quote import GetCurrencyQuote
-from .domain.services.validate_currency import ValidateCurrency
-
-
-
-class CurrencyQuote:
-    def __init__(self):
-        currency_api = CurrencyAPI()
-        validate_currency_service = ValidateCurrency(currency_api)
-        get_currency_quote_service = GetCurrencyQuote(currency_api, validate_currency_service)
-        self.controller = CurrencyController(get_currency_quote_service)
-
-    def get_quote(self, currency_code: str):
-        return self.controller.get_quote(currency_code)
diff --git a/src/currency_quote/adapters/inbound/controller.py b/src/currency_quote/adapters/inbound/controller.py
deleted file mode 100644
index ad8a4f3..0000000
--- a/src/currency_quote/adapters/inbound/controller.py
+++ /dev/null
@@ -1,14 +0,0 @@
-# src/currency_quote/adapters/inbound/controller.py
-from currency_quote.application.ports.inbound.get_currency_quote_use_case import GetCurrencyQuoteUseCase
-
-
-class CurrencyController:
-    def __init__(self, get_currency_quote_use_case: GetCurrencyQuoteUseCase):
-        self.get_currency_quote_use_case = get_currency_quote_use_case
-
-    def get_quote(self, currency_code: str):
-        try:
-            currency = self.get_currency_quote_use_case.execute(currency_code)
-            return {"code": currency.code, "name": currency.name, "rate": currency.rate}
-        except ValueError as e:
-            return {"error": str(e)}
diff --git a/src/currency_quote/adapters/inbound/lib_controller.py b/src/currency_quote/adapters/inbound/lib_controller.py
new file mode 100644
index 0000000..f262725
--- /dev/null
+++ b/src/currency_quote/adapters/inbound/lib_controller.py
@@ -0,0 +1,19 @@
+from abc import ABC
+from currency_quote.application.ports.inbound.controller import IController
+from currency_quote.application.use_cases.get_last_currency_quote import GetLastCurrencyQuoteUseCase
+from currency_quote.application.use_cases.get_history_currency_quote import GetHistCurrencyQuoteUseCase
+from currency_quote.domain.entities.currency import CurrencyQuote
+
+
+class ClientBuilder(IController):
+    def __init__(self, currency: CurrencyQuote):
+        self.currency = currency
+
+    def get_last_quote(self) -> dict:
+        return GetLastCurrencyQuoteUseCase.execute(currency_list=self.currency.get_currency_list())
+
+    def get_history_quote(self, reference_date: int) -> dict:
+        return GetHistCurrencyQuoteUseCase.execute(
+            currency_list=self.currency.get_currency_list(),
+            reference_date=reference_date
+        )
diff --git a/src/currency_quote/adapters/inbound/test_lib_controller.py b/src/currency_quote/adapters/inbound/test_lib_controller.py
new file mode 100644
index 0000000..eedc198
--- /dev/null
+++ b/src/currency_quote/adapters/inbound/test_lib_controller.py
@@ -0,0 +1,21 @@
+from currency_quote import CurrencyQuote, ClientBuilder
+import pytest
+
+
+@pytest.fixture()
+def client():
+    return ClientBuilder(currency=CurrencyQuote(currency_list=["USD-BRL"]))
+
+
+def test_client_builder(client):
+    assert isinstance(client, ClientBuilder)
+
+
+def test_get_last_quote(client):
+    last_quote = client.get_last_quote()
+    assert isinstance(last_quote, dict)
+
+
+def test_get_hist_quote(client):
+    hist_quote = client.get_history_quote(reference_date=20230101)
+    assert isinstance(hist_quote, dict)
diff --git a/src/currency_quote/adapters/outbound/currency_api.py b/src/currency_quote/adapters/outbound/currency_api.py
index 88a196a..6c667a6 100644
--- a/src/currency_quote/adapters/outbound/currency_api.py
+++ b/src/currency_quote/adapters/outbound/currency_api.py
@@ -1,17 +1,23 @@
-# src/currency_quote/adapters/outbound/currency_api.py
 from api_to_dataframe import ClientBuilder, RetryStrategies
-from currency_quote.application.ports.outbound.currency_repository import CurrencyRepository
+from currency_quote.application.ports.outbound.currency_repository import ICurrencyRepository
 from currency_quote.config.endpoints import API
 
 
-class CurrencyAPI(CurrencyRepository):
-    def _get_last_quote(*args):
-        url = API.ENDPOINT_LAST_COTATION + ','.join(args)
+class CurrencyAPI(ICurrencyRepository):
+    def __init__(self, currency_codes: str):
+        self.currency_codes = currency_codes
+
+    def get_last_quote(self) -> dict:
+        url = f"{API.ENDPOINT_LAST_COTATION}{self.currency_codes}"
         client = ClientBuilder(
             endpoint=url,
-            retry_strategy=RetryStrategies.LinearRetryStrategy
+            retry_strategy=RetryStrategies.ExponentialRetryStrategy
         )
 
         response = client.get_api_data()
 
-        return response
\ No newline at end of file
+        return response
+
+    def get_history_quote(self, reference_date: int) -> dict:
+        pass
+    
\ No newline at end of file
diff --git a/src/currency_quote/adapters/outbound/currency_validator_api.py b/src/currency_quote/adapters/outbound/currency_validator_api.py
index 398d359..52974da 100644
--- a/src/currency_quote/adapters/outbound/currency_validator_api.py
+++ b/src/currency_quote/adapters/outbound/currency_validator_api.py
@@ -1,11 +1,15 @@
 # src/currency_quote/adapters/outbound/currency_validator_api.py
 from api_to_dataframe import ClientBuilder, RetryStrategies
 from currency_quote.config.endpoints import API
+from currency_quote.application.ports.outbound.currency_validator_repository import ICurrencyValidator
 
 
-class CurrencyValidator:
-    @staticmethod
-    def validate_currency_code(currency_list: list) -> list:
+class CurrencyValidatorAPI(ICurrencyValidator):
+
+    def __init__(self, currency_list: list) -> None:
+        self.currency_list = currency_list
+
+    def validate_currency_code(self) -> list:
         client = ClientBuilder(
             endpoint=API.ENDPOINT_AVALIABLE_PARITIES,
             retry_strategy=RetryStrategies.LinearRetryStrategy
@@ -15,7 +19,7 @@ def validate_currency_code(currency_list: list) -> list:
 
         validated_list = []
 
-        for currency_code in currency_list:
+        for currency_code in self.currency_list:
             if currency_code in valid_list:
                 validated_list.append(currency_code)
 
diff --git a/src/currency_quote/application/ports/inbound/controller.py b/src/currency_quote/application/ports/inbound/controller.py
new file mode 100644
index 0000000..b4efc7b
--- /dev/null
+++ b/src/currency_quote/application/ports/inbound/controller.py
@@ -0,0 +1,17 @@
+from abc import ABC, abstractmethod, abstractclassmethod
+from currency_quote.domain.entities.currency import CurrencyQuote
+
+
+class IController(ABC):
+
+    @abstractmethod
+    def __init__(self, currency: CurrencyQuote):
+        self.currency = currency
+
+    @abstractmethod
+    def get_last_quote(self) -> dict:
+        pass
+
+    @abstractmethod
+    def get_history_quote(self, reference_date: int) -> dict:
+        pass
diff --git a/src/currency_quote/application/ports/inbound/get_currency_quote_use_case.py b/src/currency_quote/application/ports/inbound/get_currency_quote_use_case.py
deleted file mode 100644
index f8f78b2..0000000
--- a/src/currency_quote/application/ports/inbound/get_currency_quote_use_case.py
+++ /dev/null
@@ -1,8 +0,0 @@
-from abc import ABC, abstractmethod
-from currency_quote.domain.entities.currency import Currency
-
-
-class GetCurrencyQuoteUseCase(ABC):
-    @abstractmethod
-    def execute(self, currency_code: list) -> Currency:
-        pass
diff --git a/src/currency_quote/application/ports/outbound/currency_repository.py b/src/currency_quote/application/ports/outbound/currency_repository.py
index 1aa68c0..5dd419e 100644
--- a/src/currency_quote/application/ports/outbound/currency_repository.py
+++ b/src/currency_quote/application/ports/outbound/currency_repository.py
@@ -1,8 +1,16 @@
-# src/currency_quote/application/ports/outbound/currency_repository.py
+# src/currency_quote/application/ports/outbound/currency_validator_port.py
 from abc import ABC, abstractmethod
 
 
-class CurrencyRepository(ABC):
+class ICurrencyRepository(ABC):
     @abstractmethod
-    def get_currency_quote(self, currency_code: list):
+    def __init__(self, currency_codes: str):
+        pass
+
+    @abstractmethod
+    def get_last_quote(self) -> dict:
+        pass
+
+    @abstractmethod
+    def get_history_quote(self, reference_date: int) -> dict:
         pass
diff --git a/src/currency_quote/application/ports/outbound/currency_validator_repository.py b/src/currency_quote/application/ports/outbound/currency_validator_repository.py
index 53a3a86..f8f999d 100644
--- a/src/currency_quote/application/ports/outbound/currency_validator_repository.py
+++ b/src/currency_quote/application/ports/outbound/currency_validator_repository.py
@@ -2,7 +2,12 @@
 from abc import ABC, abstractmethod
 
 
-class CurrencyValidatorPort(ABC):
+class ICurrencyValidator(ABC):
+
+    @abstractmethod
+    def __init__(self, currency_list: list):
+        pass
+
     @abstractmethod
-    def validate_currency_code(self, currency_list: list) -> list:
+    def validate_currency_code(self) -> list:
         pass
diff --git a/src/currency_quote/application/use_cases/get_history_currency_quote.py b/src/currency_quote/application/use_cases/get_history_currency_quote.py
new file mode 100644
index 0000000..2415ba1
--- /dev/null
+++ b/src/currency_quote/application/use_cases/get_history_currency_quote.py
@@ -0,0 +1,15 @@
+# src/currency_quote/application/use_cases/validate_currency.py
+from currency_quote.adapters.outbound.currency_api import CurrencyAPI
+from currency_quote.domain.services.get_currency_quote import GetCurrencyQuoteService
+from currency_quote.domain.entities.currency import CurrencyQuote
+
+
+class GetHistCurrencyQuoteUseCase:
+    @staticmethod
+    def execute(currency_list: list, reference_date: int) -> dict:
+        currency_object = CurrencyQuote(currency_list)
+        quote_service = GetCurrencyQuoteService(
+            currency=currency_object,
+            currency_repository=CurrencyAPI
+        )
+        return quote_service.history(reference_date=reference_date)
diff --git a/src/currency_quote/application/use_cases/get_last_currency_quote.py b/src/currency_quote/application/use_cases/get_last_currency_quote.py
new file mode 100644
index 0000000..1d10e35
--- /dev/null
+++ b/src/currency_quote/application/use_cases/get_last_currency_quote.py
@@ -0,0 +1,15 @@
+# src/currency_quote/application/use_cases/validate_currency.py
+from currency_quote.adapters.outbound.currency_api import CurrencyAPI
+from currency_quote.domain.services.get_currency_quote import GetCurrencyQuoteService
+from currency_quote.domain.entities.currency import CurrencyQuote
+
+
+class GetLastCurrencyQuoteUseCase:
+    @staticmethod
+    def execute(currency_list: list) -> dict:
+        currency_object = CurrencyQuote(currency_list)
+        quote_service = GetCurrencyQuoteService(
+            currency=currency_object,
+            currency_repository=CurrencyAPI
+        )
+        return quote_service.last()
diff --git a/src/currency_quote/application/use_cases/test_get_history_currency_quote.py b/src/currency_quote/application/use_cases/test_get_history_currency_quote.py
new file mode 100644
index 0000000..3ab9b0c
--- /dev/null
+++ b/src/currency_quote/application/use_cases/test_get_history_currency_quote.py
@@ -0,0 +1,8 @@
+from currency_quote.application.use_cases.get_history_currency_quote import GetHistCurrencyQuoteUseCase
+
+
+def test_valid_date():
+    currency_list = ["USD-BRL", "EUR-BRL"]
+    reference_date = 20240625
+    GetHistCurrencyQuoteUseCase.execute(currency_list=currency_list, reference_date=reference_date)
+    assert True
diff --git a/src/currency_quote/application/use_cases/test_get_last_currency_quote.py b/src/currency_quote/application/use_cases/test_get_last_currency_quote.py
new file mode 100644
index 0000000..3e601b4
--- /dev/null
+++ b/src/currency_quote/application/use_cases/test_get_last_currency_quote.py
@@ -0,0 +1,23 @@
+import pytest
+from currency_quote.application.use_cases.get_last_currency_quote import GetLastCurrencyQuoteUseCase
+
+
+def test_valid_currency():
+    currency_list = ["USD-BRL", "EUR-BRL"]
+    result = GetLastCurrencyQuoteUseCase.execute(currency_list=currency_list)
+    assert isinstance(result, dict)
+    assert len(result) == 2
+
+
+def test_partial_valid_currency():
+    currency_list = ["USD-BRL", "EUR-BRL", "param1"]
+    expected_result = ["USD-BRL", "EUR-BRL"]
+    result = GetLastCurrencyQuoteUseCase.execute(currency_list=currency_list)
+    assert isinstance(result, dict)
+    assert len(result) == 2
+
+
+def test_invalid_currency():
+    currency_list = ["param1", "param2"]
+    with pytest.raises(ValueError):
+        GetLastCurrencyQuoteUseCase.execute(currency_list=currency_list)
diff --git a/src/currency_quote/application/use_cases/test_validate_currency.py b/src/currency_quote/application/use_cases/test_validate_currency.py
index 3d9d52e..e96197c 100644
--- a/src/currency_quote/application/use_cases/test_validate_currency.py
+++ b/src/currency_quote/application/use_cases/test_validate_currency.py
@@ -1,29 +1,21 @@
 import pytest
-from currency_quote.domain.services.validate_currency import CurrencyValidatorService
 from currency_quote.application.use_cases.validate_currency import ValidateCurrencyUseCase
 
 
 def test_valid_currency():
-    validator_service = CurrencyValidatorService()
     currency_list = ["USD-BRL", "USD-BRLT"]
-    validate_currency = ValidateCurrencyUseCase(currency_validator_service=validator_service)
-    result = validate_currency.execute(currency_list=currency_list)
+    result = ValidateCurrencyUseCase.execute(currency_list=currency_list)
     assert result == currency_list
 
 
 def test_partial_valid_currency():
-    validator_service = CurrencyValidatorService()
     currency_list = ["USD-BRL", "USD-BRLT", "param1"]
     expected_result = ["USD-BRL", "USD-BRLT"]
-    validate_currency = ValidateCurrencyUseCase(currency_validator_service=validator_service)
-    result = validate_currency.execute(currency_list=currency_list)
+    result = ValidateCurrencyUseCase.execute(currency_list=currency_list)
     assert result == expected_result
 
 
 def test_invalid_currency():
-    validator_service = CurrencyValidatorService()
     currency_list = ["param1", "param2"]
-    validate_currency = ValidateCurrencyUseCase(currency_validator_service=validator_service)
     with pytest.raises(ValueError):
-        validate_currency.execute(currency_list=currency_list)
-
+        ValidateCurrencyUseCase.execute(currency_list=currency_list)
diff --git a/src/currency_quote/application/use_cases/validate_currency.py b/src/currency_quote/application/use_cases/validate_currency.py
index 4a56c52..58a3f32 100644
--- a/src/currency_quote/application/use_cases/validate_currency.py
+++ b/src/currency_quote/application/use_cases/validate_currency.py
@@ -1,10 +1,15 @@
 # src/currency_quote/application/use_cases/validate_currency.py
 from currency_quote.domain.services.validate_currency import CurrencyValidatorService
+from currency_quote.adapters.outbound.currency_validator_api import CurrencyValidatorAPI
+from currency_quote.domain.entities.currency import CurrencyQuote
 
 
 class ValidateCurrencyUseCase:
-    def __init__(self, currency_validator_service: CurrencyValidatorService):
-        self.currency_validator_service = currency_validator_service
-
-    def execute(self, currency_list: list) -> list:
-        return self.currency_validator_service.validate_currency_code(currency_list)
+    @staticmethod
+    def execute(currency_list: list) -> list:
+        currency_object = CurrencyQuote(currency_list)
+        validator_service = CurrencyValidatorService(
+            currency=currency_object,
+            currency_validator=CurrencyValidatorAPI
+        )
+        return validator_service.validate_currency_code()
diff --git a/src/currency_quote/domain/entities/currency.py b/src/currency_quote/domain/entities/currency.py
index 4b77004..5c6ca5c 100644
--- a/src/currency_quote/domain/entities/currency.py
+++ b/src/currency_quote/domain/entities/currency.py
@@ -1,3 +1,11 @@
-class Currency:
-    def __init__(self, currency: list):
-        self.currency_list = currency
+# currency.py
+
+class CurrencyQuote:
+    def __init__(self, currency_list: list):
+        self.currency_list = currency_list
+
+    def get_currency_list(self) -> list:
+        if self.currency_list is None:
+            raise ValueError("Currency list is empty")
+
+        return self.currency_list
diff --git a/src/currency_quote/domain/services/get_currency_quote.py b/src/currency_quote/domain/services/get_currency_quote.py
index 9285914..ecc2396 100644
--- a/src/currency_quote/domain/services/get_currency_quote.py
+++ b/src/currency_quote/domain/services/get_currency_quote.py
@@ -1,20 +1,21 @@
-# src/currency_quote/domain/services/get_currency_quote.py
-from currency_quote.application.ports.inbound.get_currency_quote_use_case import GetCurrencyQuoteUseCase
-from currency_quote.application.ports.outbound.currency_repository import CurrencyRepository
-from currency_quote.domain.entities.currency import Currency
-from currency_quote.domain.services.validate_currency import ValidateCurrency
+from currency_quote.application.ports.outbound.currency_repository import ICurrencyRepository
+from currency_quote.application.use_cases.validate_currency import ValidateCurrencyUseCase
+from currency_quote.domain.entities.currency import CurrencyQuote
 
+from typing import Type
 
-class GetCurrencyQuote(GetCurrencyQuoteUseCase):
-    def __init__(self, currency_repository: CurrencyRepository, validate_currency_service: ValidateCurrency):
+
+class GetCurrencyQuoteService:
+    def __init__(self, currency: CurrencyQuote, currency_repository: Type[ICurrencyRepository]):
+        self.currency_list = currency.get_currency_list()
         self.currency_repository = currency_repository
-        self.validate_currency_service = validate_currency_service
 
-    def execute(self, currency_code: str) -> Currency:
-        if not self.validate_currency_service.execute(currency_code):
-            raise ValueError(f"Código de moeda {currency_code} é inválido.")
+    def last(self) -> dict:
+        return self.currency_repository(self.validate_currency_code()).get_last_quote()
+
+    def history(self, reference_date: int) -> dict:
+        return dict()
 
-        currency = self.currency_repository.get_currency_quote(currency_code)
-        if not currency:
-            raise ValueError(f"Cotação para a moeda {currency_code} não encontrada.")
-        return currency
+    def validate_currency_code(self) -> str:
+        valid_list = ValidateCurrencyUseCase.execute(self.currency_list)
+        return ','.join(valid_list)
diff --git a/src/currency_quote/domain/services/validate_currency.py b/src/currency_quote/domain/services/validate_currency.py
index 20138f5..508fd40 100644
--- a/src/currency_quote/domain/services/validate_currency.py
+++ b/src/currency_quote/domain/services/validate_currency.py
@@ -1,19 +1,21 @@
 # src/currency_quote/application/services/currency_validator_service.py
-from currency_quote.application.ports.outbound.currency_validator_repository import CurrencyValidatorPort
-from currency_quote.adapters.outbound.currency_validator_api import CurrencyValidator
+from currency_quote.domain.entities.currency import CurrencyQuote
+from currency_quote.application.ports.outbound.currency_validator_repository import ICurrencyValidator
+from typing import Type
 
 
-class CurrencyValidatorService(CurrencyValidatorPort):
-    def __init__(self):
-        self.currency_validator = CurrencyValidator()
+class CurrencyValidatorService:
+    def __init__(self, currency: CurrencyQuote, currency_validator: Type[ICurrencyValidator]):
+        self.currency_validator = currency_validator
+        self.currency_list = currency.get_currency_list()
 
-    def validate_currency_code(self, currency_list: list) -> list:
-        validated_list = self.currency_validator.validate_currency_code(currency_list)
+    def validate_currency_code(self) -> list:
+        validated_list = self.currency_validator(self.currency_list).validate_currency_code()
 
         if len(validated_list) == 0:
-            raise ValueError(f"All params: {currency_list} are invalid.")
+            raise ValueError(f"All params: {self.currency_list} are invalid.")
 
-        if len(validated_list) < len(currency_list):
-            print(f"Invalid currency params: {set(currency_list) - set(validated_list)}")
+        if len(validated_list) < len(self.currency_list):
+            print(f"Invalid currency params: {set(self.currency_list) - set(validated_list)}")
 
         return validated_list
diff --git a/src/currency_quote/utils/common.py b/src/currency_quote/utils/common.py
deleted file mode 100644
index b428671..0000000
--- a/src/currency_quote/utils/common.py
+++ /dev/null
@@ -1,19 +0,0 @@
-import os
-from datetime import datetime, timezone
-
-
-
-def DefaultTimestampStr() -> str:
-    """
-    Returns the current timestamp as a string.
-    """
-    current = datetime.now().timestamp()
-    return str(int(current))
-
-
-def DefaultUTCDatetime() -> str:
-    """
-    Returns:
-        str: The current UTC datetime as a string in the format "%Y-%m-%d %H:%M:%S".
-    """
-    return (datetime.now(timezone.utc)).strftime("%Y-%m-%d %H:%M:%S")
diff --git a/src/currency_quote/utils/logs.py b/src/currency_quote/utils/logs.py
deleted file mode 100644
index de876c7..0000000
--- a/src/currency_quote/utils/logs.py
+++ /dev/null
@@ -1,102 +0,0 @@
-import logging
-import os
-import common
-
-
-class CustomLogger():
-    def __init__(self, module) -> None:
-        self.module = module
-        self._log_format = "%(asctime)s :: %(levelname)s :: %(message)s"
-    
-    def _make_file_log(self):
-        dir_name = common.DefaultOutputLogFolder()
-        os.makedirs(dir_name, exist_ok=True)
-        
-        with open(dir_name + f"{self.module}.log", "w") as f:
-            f.write("")
-            
-        return dir_name + f"{self.module}.log"
-    
-
-
-    def _logger(self):
-        file_log = self._make_file_log()
-            
-        logging.basicConfig(
-            filename=file_log,
-            level=logging.DEBUG,
-            format=self._log_format,
-            datefmt="%Y-%m-%d %H:%M:%S",
-            )
-        
-        consoleLog = logging.getLogger("consoleLogger")
-        
-        consoleLog.setLevel(logging.INFO)
-        ch = logging.StreamHandler()
-        ch.setLevel(logging.INFO)
-        formatter = logging.Formatter(self._log_format)
-        ch.setFormatter(formatter)
-
-        consoleLog.addHandler(ch)
-
-        return consoleLog
-
-
-    def info(self, msg: str):
-        """
-        Logs an informational message.
-
-        Args:
-            msg (str): The message to be logged.
-            module (str): The name of the module.
-
-        Returns:
-            None
-        """
-        if logging.getLogger("consoleLogger").hasHandlers():
-            logger = logging.getLogger("consoleLogger")
-        else:
-            logger = CustomLogger(module=self.module)._logger()
-
-        logger.info(msg=msg)
-        
-        return True
-
-
-    def error(self, msg: str):
-        """
-        Logs an error message.
-
-        Args:
-            msg (str): The message to be logged.
-            module (str): The name of the module.
-
-        Returns:
-            None
-        """
-        if logging.getLogger("consoleLogger").hasHandlers():
-            logger = logging.getLogger("consoleLogger")
-        else:
-            logger = CustomLogger(module=self.module)._logger()
-
-        logger.error(msg=msg)
-
-        return True
-
-    def warning(self, msg: str):
-        """
-        Logs a warning message.
-
-        Args:
-            msg (str): The message to be logged.
-        Returns:
-            None
-        """
-        if logging.getLogger("consoleLogger").hasHandlers():
-            logger = logging.getLogger("consoleLogger")
-        else:
-            logger = CustomLogger(module=self.module)._logger()
-
-        logger.warning(msg=msg)
-        
-        return True
\ No newline at end of file