Worked on the github/github-mcp-server repository to deliver targeted improvements in API correctness and maintainability. Focused on backend development and API modernization using Go, the work included aligning GraphQL confidence enum values with schema standards by updating them to uppercase, which improved clarity and consistency for downstream clients. Additionally, modernized the MCP API by promoting issue fields and removing legacy write methods, reducing technical debt and simplifying the codebase. All related documentation, tests, and tool snapshots were updated to reflect these changes, ensuring a clean and maintainable API surface. Emphasized thorough testing and clear documentation throughout the development process.