Marijn worked on the wandb/wandb repository, focusing on enhancing the SDK’s public API by exporting the create_and_run_agent function from the Launch module. Using Python and Markdown, Marijn updated the module’s __all__ attribute to ensure direct import and usage, and refreshed the changelog to provide clear guidance on the new API. This change improved automation workflows by simplifying programmatic launches and reducing integration friction for developers. The work demonstrated a solid grasp of API design and changelog management, with a targeted visibility fix that made the new functionality reliably accessible, ultimately streamlining onboarding and usage for SDK consumers.