Worked on enhancing error logging and diagnostics for the fastmcp repository, focusing on improving the traceability of exceptions and subprocess failures within both the core run function and its command-line interface. Leveraged Python to implement exc_info-based exception logging, ensuring that full tracebacks are captured in logs for more effective debugging. Updated the CLI to utilize logger.exception, which records comprehensive error details during runtime and subprocess errors. This approach strengthened the project’s error handling and logging capabilities, streamlining root-cause analysis and reducing the time required to identify issues. The work emphasized CLI development, debugging, and robust error management throughout the codebase.