diff --git a/api/core/agent/fc_agent_runner.py b/api/core/agent/fc_agent_runner.py
index c05c17b355..88753ff2de 100644
--- a/api/core/agent/fc_agent_runner.py
+++ b/api/core/agent/fc_agent_runner.py
@@ -235,9 +235,7 @@ class FunctionCallAgentRunner(BaseAgentRunner):
                     }
                 else:
                     inputs_to_pass = (
-                        kwargs.get("inputs")
-                        if tool_instance.tool_provider_type() == ToolProviderType.MCP
-                        else None
+                        kwargs.get("inputs") if tool_instance.tool_provider_type() == ToolProviderType.MCP else None
                     )
                     # invoke tool
                     tool_invoke_response, message_files, tool_invoke_meta = ToolEngine.agent_invoke(
diff --git a/api/core/tools/mcp_tool/tool.py b/api/core/tools/mcp_tool/tool.py
index 0facb557de..c33ea3894c 100644
--- a/api/core/tools/mcp_tool/tool.py
+++ b/api/core/tools/mcp_tool/tool.py
@@ -168,8 +168,9 @@ class MCPTool(Tool):
                 sse_read_timeout=self.sse_read_timeout,
                 provider_entity=provider_entity,
             ) as mcp_client:
-                return mcp_client.invoke_tool(tool_name=self.entity.identity.name, tool_args=tool_parameters, 
-                                              _meta=_meta)
+                return mcp_client.invoke_tool(
+                    tool_name=self.entity.identity.name, tool_args=tool_parameters, _meta=_meta
+                )
         except MCPConnectionError as e:
             raise ToolInvokeError(f"Failed to connect to MCP server: {e}") from e
         except Exception as e:
diff --git a/api/core/tools/tool_engine.py b/api/core/tools/tool_engine.py
index 3d0302a93e..a6efd91eee 100644
--- a/api/core/tools/tool_engine.py
+++ b/api/core/tools/tool_engine.py
@@ -198,7 +198,7 @@ class ToolEngine:
         conversation_id: str | None = None,
         app_id: str | None = None,
         message_id: str | None = None,
-        inputs: dict[str, Any] | None = None, 
+        inputs: dict[str, Any] | None = None,
     ) -> Generator[ToolInvokeMessage | ToolInvokeMeta, None, None]:
         """
         Invoke the tool with the given arguments.