diff --git a/integrations/langchain/src/databricks_langchain/chat_models.py b/integrations/langchain/src/databricks_langchain/chat_models.py
index 2566387..85ed684 100644
--- a/integrations/langchain/src/databricks_langchain/chat_models.py
+++ b/integrations/langchain/src/databricks_langchain/chat_models.py
@@ -1,36 +1,44 @@
 ### langchain/chat_models.py ###
 
-from typing import Iterator, List, Dict, Any, Optional, Union
+from typing import Any, Dict, Iterator, List, Optional
+
 from langchain_core.callbacks import CallbackManagerForLLMRun
 from langchain_core.language_models import BaseChatModel
 from langchain_core.messages import (
-    AIMessage, AIMessageChunk, BaseMessage, ChatResult, ChatGeneration, ChatGenerationChunk
-)
-from langchain_core.output_parsers import JsonOutputParser, PydanticOutputParser
-from langchain_core.output_parsers.base import OutputParserLike
-from langchain_core.output_parsers.openai_tools import (
-    JsonOutputKeyToolsParser, PydanticToolsParser, make_invalid_tool_call, parse_tool_call
+    AIMessage,
+    AIMessageChunk,
+    BaseMessage,
+    ChatGenerationChunk,
+    ChatResult,
 )
-from langchain_core.runnables import Runnable, RunnableMap, RunnablePassthrough
-from langchain_core.tools import BaseTool
-from langchain_core.utils.function_calling import convert_to_openai_tool
-from langchain_core.utils.pydantic import is_basemodel_subclass
-from databricks_langchain.utils import get_deployment_client
+
 from .base_chat_models import BaseChatDatabricks
 
 
 class ChatDatabricks(BaseChatDatabricks, BaseChatModel):
-    def _generate(self, messages: List[BaseMessage], stop: Optional[List[str]] = None, **kwargs: Any) -> ChatResult:
-        data = self._prepare_inputs([_convert_message_to_dict(msg) for msg in messages], stop, **kwargs)
+    def _generate(
+        self, messages: List[BaseMessage], stop: Optional[List[str]] = None, **kwargs: Any
+    ) -> ChatResult:
+        data = self._prepare_inputs(
+            [_convert_message_to_dict(msg) for msg in messages], stop, **kwargs
+        )
         resp = self.client.predict(endpoint=self.endpoint, inputs=data)
         return self._convert_response_to_chat_result(resp)
 
     def _stream(
-        self, messages: List[BaseMessage], stop: Optional[List[str]] = None, run_manager: Optional[CallbackManagerForLLMRun] = None, *, stream_usage: Optional[bool] = None, **kwargs: Any
+        self,
+        messages: List[BaseMessage],
+        stop: Optional[List[str]] = None,
+        run_manager: Optional[CallbackManagerForLLMRun] = None,
+        *,
+        stream_usage: Optional[bool] = None,
+        **kwargs: Any,
     ) -> Iterator[ChatGenerationChunk]:
         if stream_usage is None:
             stream_usage = self.stream_usage
-        data = self._prepare_inputs([_convert_message_to_dict(msg) for msg in messages], stop, **kwargs)
+        data = self._prepare_inputs(
+            [_convert_message_to_dict(msg) for msg in messages], stop, **kwargs
+        )
         first_chunk_role = None
         for chunk in self.client.predict_stream(endpoint=self.endpoint, inputs=data):
             if chunk["choices"]:
@@ -40,7 +48,9 @@ def _stream(
                     first_chunk_role = chunk_delta.get("role")
 
                 usage = chunk.get("usage") if stream_usage else None
-                chunk_message = _convert_dict_to_message_chunk(chunk_delta, first_chunk_role, usage=usage)
+                chunk_message = _convert_dict_to_message_chunk(
+                    chunk_delta, first_chunk_role, usage=usage
+                )
                 generation_info = {
                     "finish_reason": choice.get("finish_reason", ""),
                     "logprobs": choice.get("logprobs", {}),
@@ -57,6 +67,7 @@ def _llm_type(self) -> str:
 
 ### Conversion Functions ###
 
+
 def _convert_message_to_dict(message: BaseMessage) -> Dict[str, Any]:
     message_dict = {"content": message.content}
     if isinstance(message, AIMessage):
diff --git a/src/databricks_ai_bridge/chat_models.py b/src/databricks_ai_bridge/chat_models.py
index c2e388f..4ae9348 100644
--- a/src/databricks_ai_bridge/chat_models.py
+++ b/src/databricks_ai_bridge/chat_models.py
@@ -1,6 +1,7 @@
 ### base_chat_models.py ###
 
-from typing import List, Dict, Any, Optional, Union
+from typing import Any, Dict, List, Optional
+
 from databricks_ai_bridge.utils import get_deployment_client
 
 
@@ -38,7 +39,9 @@ def _default_params(self) -> Dict[str, Any]:
             "extra_params": self.extra_params,
         }
 
-    def _prepare_inputs(self, messages: List[Dict[str, Any]], stop: Optional[List[str]] = None, **kwargs: Any) -> Dict[str, Any]:
+    def _prepare_inputs(
+        self, messages: List[Dict[str, Any]], stop: Optional[List[str]] = None, **kwargs: Any
+    ) -> Dict[str, Any]:
         data = {
             "messages": messages,
             "temperature": self.temperature,
@@ -63,7 +66,9 @@ def _convert_response_to_chat_result(self, response: Dict[str, Any]) -> Dict[str
         usage = response.get("usage", {})
         return {"generations": generations, "llm_output": usage}
 
-    def _stream(self, messages: List[Dict[str, Any]], stop: Optional[List[str]] = None, **kwargs: Any):
+    def _stream(
+        self, messages: List[Dict[str, Any]], stop: Optional[List[str]] = None, **kwargs: Any
+    ):
         data = self._prepare_inputs(messages, stop, **kwargs)
         for chunk in self.client.predict_stream(endpoint=self.endpoint, inputs=data):
             if chunk["choices"]:
diff --git a/src/databricks_ai_bridge/utils.py b/src/databricks_ai_bridge/utils.py
index 9df05ea..b465506 100644
--- a/src/databricks_ai_bridge/utils.py
+++ b/src/databricks_ai_bridge/utils.py
@@ -1,6 +1,7 @@
 from typing import Any
 from urllib.parse import urlparse
 
+
 def get_deployment_client(target_uri: str) -> Any:
     if (target_uri != "databricks") and (urlparse(target_uri).scheme != "databricks"):
         raise ValueError("Invalid target URI. The target URI must be a valid databricks URI.")
@@ -14,4 +15,4 @@ def get_deployment_client(target_uri: str) -> Any:
             "Failed to create the client. "
             "Please run `pip install mlflow` to install "
             "required dependencies."
-        ) from e
\ No newline at end of file
+        ) from e