Zhenwei Gao contributed to the openai/openai-cookbook repository by improving metadata accuracy and enhancing documentation transparency. During January 2026, Zhenwei updated the registry.yaml file using YAML and Python to ensure the metadata reflected the correct year, addressing issues with outdated information. Additionally, Zhenwei introduced a dedicated Contributors section to the fact-checker guide in markdown, making co-authorship and collaboration more visible. This work combined metadata management with clear documentation practices, supporting better governance and auditability within the project. The changes addressed both technical correctness and process transparency, demonstrating a thoughtful approach to maintaining reliable and collaborative open-source documentation.