Hello, I have enabled the mcp instrument in my agent and I can see it getting registered. When my mcp client calls the tool_call I can see the flow going inside the mcp instrument but there seems to be some pydanticserializationunexpectedvalue(expected initialize request serialized value listtoolrequest) Anyone facing similar issues??
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StackTrace :
UserWarning: Pydantic serializer warnings:
PydanticSerializationUnexpectedValue(Expected `PingRequest` - serialized value may not be as expected [input_value=ListToolsRequest(method='...-498c5b942be44b9f-01'))), input_type=ListToolsRequest])
PydanticSerializationUnexpectedValue(Expected `InitializeRequest` - serialized value may not be as expected [input_value=ListToolsRequest(method='...-498c5b942be44b9f-01'))), input_type=ListToolsRequest])
PydanticSerializationUnexpectedValue(Expected `CompleteRequest` - serialized value may not be as expected [input_value=ListToolsRequest(method='...-498c5b942be44b9f-01'))), input_type=ListToolsRequest])async def execute_mcp_tool(self, request,tool_to_call): with tracer.start_as_current_span( name=f"Tool - {tool_to_call.name}", attributes={ SpanAttributes.OPENINFERENCE_SPAN_KIND: OpenInferenceSpanKindValues.TOOL.value, SpanAttributes.TOOL_NAME: tool_to_call.name, SpanAttributes.TOOL_DESCRIPTION: tool_to_call.description, SpanAttributes.TOOL_PARAMETERS: tool_call.model_dump().get('function').get('arguments'), ToolAttributes.TOOL_JSON_SCHEMA: '' }, ) as tool_span: metadata = self.metadata response = None try: async with self.mcp.client as client: request = json.loads(request) request['input']['metadata'] = metadata response = await client.call_tool(tool_to_call.name, request) except Exception as e: print(e) print(f'Exception occurred while executing tool:{tool_to_call.name}, {Exception}') if response.content and len(response.content) > 0: content = response.content[0].text if hasattr(response.content[0], 'text') else str( response.content[0]) else: content = None tool_span.set_attributes({ SpanAttributes.OUTPUT_VALUE: content, SpanAttributes.OUTPUT_MIME_TYPE: "application/json" })
return contentoccurs for all the tools
tool input argument:
class input(BaseModel):
metadata: ToolMetadataObject
name: str
query: QueryObjectWorked like a charm Thanks a lot