fix(mcp): resolve async execution flow issues in client and agent

swarms/structs/agent.py

@@ -255,7 +255,7 @@ class Agent:
         run_async_concurrent: Run the agent asynchronously and concurrently
         run_async_concurrent: Run the agent asynchronously and concurrently
         construct_dynamic_prompt: Construct the dynamic prompt
-        handle_artifacts: Handle artifacts
+        handle_artifacts
 
 
     Examples:
@@ -841,6 +841,8 @@ class Agent:
             f"Initializing Agent: {self.agent_name}"
         )
 
+        )
+
         data = self.to_dict()
 
         # Beautify the data
@@ -2645,88 +2647,18 @@ class Agent:
         else:
             return str(response)
 
-    def mcp_execution_flow(self, response: str) -> str:
+    async def mcp_execution_flow(self, tool_call):
-        """Forward tool calls to MCP servers with support for various input formats.
+        """Execute MCP tool call flow"""
-        
-        Args:
-            response (str): The response from the LLM containing tool calls or natural language.
-            
-        Returns:
-            str: The result of executing the tool calls with preserved formatting.
-        """
         try:
-            # Try to parse as JSON first
+            result = await execute_mcp_tool(
-            try:
+                url=self.mcp_servers[0]["url"],
-                tool_calls = json.loads(response)
+                parameters=tool_call,
-                is_json = True
+                output_type="str",
-            except json.JSONDecodeError:
-                # If not JSON, treat as natural language
-                tool_calls = [response]
-                is_json = False
-                
-            # Execute tool calls against MCP servers
-            results = []
-            errors = []
-            
-            # Handle both single tool call and array of tool calls
-            if isinstance(tool_calls, dict):
-                tool_calls = [tool_calls]
-                
-            for tool_call in tool_calls:
-                try:
-                    # Execute the tool call against all MCP servers
-                    result = batch_mcp_flow(self.mcp_servers, tool_call)
-                    if result:
-                        results.extend(result)
-                        # Add successful result to memory with context
-                        self.short_memory.add(
-                            role="assistant",
-                            content=f"Tool execution result: {result}"
-                        )
-                    else:
-                        error_msg = "No result from tool execution"
-                        errors.append(error_msg)
-                        self.short_memory.add(
-                            role="error",
-                            content=error_msg
-                        )
-                        
-                except Exception as e:
-                    error_msg = f"Error executing tool call: {str(e)}"
-                    errors.append(error_msg)
-                    logger.error(error_msg)
-                    self.short_memory.add(
-                        role="error",
-                        content=error_msg
-                    )
-            
-            # Format the final response
-            if results:
-                if len(results) == 1:
-                    # For single results, return as is to preserve formatting
-                    return results[0]
-                else:
-                    # For multiple results, combine with context
-                    formatted_results = []
-                    for i, result in enumerate(results, 1):
-                        formatted_results.append(f"Result {i}: {result}")
-                    return "\n".join(formatted_results)
-            elif errors:
-                if len(errors) == 1:
-                    return errors[0]
-                else:
-                    return "Multiple errors occurred:\n" + "\n".join(f"- {err}" for err in errors)
-            else:
-                return "No results or errors returned"
-            
-        except Exception as e:
-            error_msg = f"Error in MCP execution flow: {str(e)}"
-            logger.error(error_msg)
-            self.short_memory.add(
-                role="error",
-                content=error_msg
             )
-            return error_msg
+            return result
+        except Exception as e:
+            logger.error(f"Error executing tool call: {e}")
+            return f"Error executing tool call: {e}"
 
     def sentiment_and_evaluator(self, response: str):
         if self.evaluator:

swarms/tools/mcp_client.py

@@ -73,19 +73,16 @@ async def _execute_mcp_tool(
         raise ValueError(f"Invalid output type: {output_type}")
 
 
-def execute_mcp_tool(
+async def execute_mcp_tool(
     url: str,
     tool_name: str = None,
     method: Literal["stdio", "sse"] = "sse",
     parameters: Dict[Any, Any] = None,
     output_type: Literal["str", "dict"] = "str",
 ) -> Dict[Any, Any]:
-    return asyncio.run(
+    return await _execute_mcp_tool(
-        _execute_mcp_tool(
+        url=url,
-            url=url,
+        method=method,
-            tool_name=tool_name,
+        parameters=parameters,
-            method=method,
+        output_type=output_type,
-            parameters=parameters,
-            output_type=output_type,
-        )
     )