fix(backend/chat): Address additional PR review comments

- Add terminal StreamFinish in adapt_sdk_stream if SDK ends without one
- Sanitize error message in adapt_sdk_stream exception handler
- Pass full JSON schema (type, properties, required) to tool decorator

autogpt_platform/backend/backend/api/features/chat/sdk/response_adapter.py

@@ -282,6 +282,7 @@ async def adapt_sdk_stream(
     # Emit start immediately
     yield StreamStart(messageId=adapter.message_id, taskId=task_id)
 
+    finished = False
     try:
         async for sdk_message in sdk_stream:
             responses = adapter.convert_message(sdk_message)
@@ -289,12 +290,19 @@ async def adapt_sdk_stream(
                 # Skip duplicate start messages
                 if isinstance(response, StreamStart):
                     continue
+                if isinstance(response, StreamFinish):
+                    finished = True
                 yield response
 
     except Exception as e:
         logger.error(f"Error in SDK stream: {e}", exc_info=True)
         yield StreamError(
-            errorText=f"Stream error: {str(e)}",
+            errorText="An error occurred. Please try again.",
             code="stream_error",
         )
         yield StreamFinish()
+        return
+
+    # Ensure terminal StreamFinish if SDK stream ended without one
+    if not finished:
+        yield StreamFinish()

autogpt_platform/backend/backend/api/features/chat/sdk/service.py

@@ -350,7 +350,6 @@ async def stream_chat_completion_sdk(
 
                 # Receive messages from the SDK
                 async for sdk_msg in client.receive_messages():
-
                     for response in adapter.convert_message(sdk_msg):
                         if isinstance(response, StreamStart):
                             continue

autogpt_platform/backend/backend/api/features/chat/sdk/tool_adapter.py

@@ -179,10 +179,15 @@ def create_copilot_mcp_server():
 
             # Create the decorated tool
             # The @tool decorator expects (name, description, schema)
+            # Pass full JSON schema with type, properties, and required
             decorated = tool(
                 tool_name,
                 base_tool.description,
-                base_tool.parameters.get("properties", {}),
+                {
+                    "type": "object",
+                    "properties": base_tool.parameters.get("properties", {}),
+                    "required": base_tool.parameters.get("required", []),
+                },
             )(handler)
 
             sdk_tools.append(decorated)