In April 2025, Jianlei worked on the opensumi/core repository, focusing on expanding the MCP Server’s capabilities. He developed client API exposure and added support for SSE transport, allowing for more flexible server configurations and streamlined client integration. Using Node.js and TypeScript, Jianlei introduced a server-by-name lookup API, which improved operational discoverability and automation potential. He also enhanced the testing infrastructure to support these new features, ensuring robust validation and smoother iteration. While no critical bugs were addressed, his work laid the foundation for future scalability and observability, demonstrating depth in backend development, API design, and automated testing practices.