During May 2025, Daidi focused on stabilizing API request handling in the modelcontextprotocol/typescript-sdk repository. They addressed a critical bug related to the onprogress feature, ensuring that existing _meta properties were preserved by merging them with new progressToken values. This approach prevented metadata loss and maintained parameter integrity in progress-enabled requests, directly improving API reliability for client integrations. Daidi implemented the solution using TypeScript, drawing on expertise in API integration and SDK development. The work was thoroughly code reviewed and regression tested, reflecting careful attention to detail and a deep understanding of robust metadata handling in TypeScript-based SDKs.