Worked on enhancing the modelcontextprotocol/python-sdk by delivering improved diagnostics and error logging for JSON-RPC client-server communication. Focused on implementing structured error logging for failed JSON-RPC message parsing and validation failures, the work aimed to streamline the identification and resolution of communication issues. Leveraging Python, the developer applied skills in error handling and logging to capture detailed exception information, thereby increasing the reliability and observability of the SDK’s communication pipeline. This targeted feature improved the diagnosability of client-server interactions, enabling faster debugging and more robust error tracking without introducing new bug fixes during the development period.