In May 2025, Timo Deeken enhanced the nodejs/undici repository by developing a feature that exposes client and pool statistics through the Agent interface, improving observability and maintainability for users of the library. He refactored the existing statistics logic into a shared utility, reducing code duplication and streamlining future updates. The implementation included comprehensive documentation and robust tests to ensure reliability and clarity for API consumers. Working primarily with JavaScript and Node.js, Timo applied his expertise in API development and testing to deliver a well-structured solution that supports debugging, capacity planning, and monitoring of API usage within the project.