diff --git a/autogpt_platform/backend/backend/api/features/chat/response_model.py b/autogpt_platform/backend/backend/api/features/chat/response_model.py
index e04218ea87..07849d02da 100644
--- a/autogpt_platform/backend/backend/api/features/chat/response_model.py
+++ b/autogpt_platform/backend/backend/api/features/chat/response_model.py
@@ -138,6 +138,7 @@ class StreamToolOutputAvailable(StreamBaseResponse):
     def to_sse(self) -> str:
         """Convert to SSE format, excluding non-spec fields."""
         import json
+
         data = {
             "type": self.type.value,
             "toolCallId": self.toolCallId,
@@ -145,6 +146,7 @@ class StreamToolOutputAvailable(StreamBaseResponse):
         }
         return f"data: {json.dumps(data)}\n\n"
 
+
 # ========== Other ==========
 
 
diff --git a/autogpt_platform/backend/backend/api/features/chat/routes.py b/autogpt_platform/backend/backend/api/features/chat/routes.py
index 2cb17ae397..9b021c0601 100644
--- a/autogpt_platform/backend/backend/api/features/chat/routes.py
+++ b/autogpt_platform/backend/backend/api/features/chat/routes.py
@@ -37,7 +37,6 @@ from .tools.models import (
     OperationInProgressResponse,
     OperationPendingResponse,
     OperationStartedResponse,
-    ResponseType,
     SetupRequirementsResponse,
     UnderstandingUpdatedResponse,
 )
diff --git a/autogpt_platform/backend/backend/api/features/chat/service.py b/autogpt_platform/backend/backend/api/features/chat/service.py
index b64487bd15..501721fc41 100644
--- a/autogpt_platform/backend/backend/api/features/chat/service.py
+++ b/autogpt_platform/backend/backend/api/features/chat/service.py
@@ -351,7 +351,9 @@ async def stream_chat_completion(
     retry_count: int = 0,
     session: ChatSession | None = None,
     context: dict[str, str] | None = None,  # {url: str, content: str}
-    _continuation_message_id: str | None = None,  # Internal: reuse message ID for tool call continuations
+    _continuation_message_id: (
+        str | None
+    ) = None,  # Internal: reuse message ID for tool call continuations
 ) -> AsyncGenerator[StreamBaseResponse, None]:
     """Main entry point for streaming chat completions with database handling.
 
@@ -480,13 +482,10 @@ async def stream_chat_completion(
     # Generate unique IDs for AI SDK protocol
     import uuid as uuid_module
 
-    # Reuse message ID for continuations (tool call follow-ups) to avoid duplicate messages
     is_continuation = _continuation_message_id is not None
     message_id = _continuation_message_id or str(uuid_module.uuid4())
     text_block_id = str(uuid_module.uuid4())
 
-    # Only yield message start for the initial call, not for continuations
-    # This prevents the AI SDK from creating duplicate message objects
     if not is_continuation:
         yield StreamStart(messageId=message_id)