Piyush Tiwari developed a comprehensive unit test suite for the fetch MCP server in the modelcontextprotocol/servers repository, focusing on robust coverage for URL parsing, HTML to Markdown conversion, robots.txt handling, and a variety of HTTP response scenarios. Leveraging Python, pytest, and async programming techniques, Piyush introduced both pytest and pytest-asyncio as development dependencies to enable reliable asynchronous testing. This work established a solid foundation for future development by reducing regression risk and accelerating feature delivery. The depth of the test coverage scaffolding improved code quality, enabled faster CI feedback, and ensured safer deployments for the server’s evolving codebase.