In March 2025, Guangzu Zhu enhanced the CAN Faults API documentation in the Trackunit/developer-hub repository, focusing on improving clarity and usability for developers. He delivered a series of Markdown-based updates that clarified parameter definitions, added practical usage examples, and provided historical context for API endpoints. By introducing cross-references to related Machine APIs and standardizing metadata such as category IDs and changelog references, Guangzu improved the discoverability and consistency of the documentation. His work addressed pull request feedback and refined endpoint introductions, ultimately reducing onboarding confusion and supporting API adoption through clear, well-structured API documentation using his expertise in API Documentation.