Return type standardization

mcp_logic.py

@@ -42,24 +42,14 @@ class MCPServer:
                 )
             
             try:
-                result_data = await tool.handler(args)
+                content = await tool.handler(args)
             except ToolError as e:
                 # Convert tool errors into a text response so the LLM can understand and potentially fix the input
-                result_data = {"text": str(e)}
+                content = [{"type": "text", "text": str(e)}]
             except Exception as e:
                 # Catch-all for unexpected crashes to prevent server death
-                result_data = {"text": f"Unexpected internal error: {str(e)}"}
+                content = [{"type": "text", "text": f"Unexpected internal error: {str(e)}"}]
             
-            # Handle results that are already lists of content (for multimodal/multi-part responses)
-            if isinstance(result_data, list):
-                content = result_data
-            elif isinstance(result_data, dict) and "text" in result_data:
-                content = [{"type": "text", "text": result_data["text"]}]
-            elif isinstance(result_data, dict) and result_data.get("type") == "image":
-                content = [result_data]
-            else:
-                content = [result_data]
-                
             return {"content": content}
 
         return Response(