Marwan worked on the zenml-io/zenml repository, where he unified metadata logging by developing a single log_metadata API for both artifacts and models. He refactored existing Python code to replace separate log_artifact_metadata and log_model_metadata functions, streamlining the API surface and improving code consistency. Marwan updated documentation and starter guides written in Markdown to reflect these changes, ensuring new users could onboard more easily. His work included a thorough migration of key pages and a final cleanup of legacy references, focusing on maintainability and future extensibility. No bug fixes were required, as the month centered on API refactoring and documentation.