Balazs Hevesi focused on enhancing developer documentation across the supabase/supabase and garden-co/jazz repositories during May 2025. He improved the Solid.js quickstart guide by refining indentation and formatting, which increased readability and reduced onboarding friction for new contributors. In the garden-co/jazz project, he updated the upgrade guide by removing outdated information related to React Native and Zod, ensuring documentation accuracy. His work emphasized cross-repository consistency, using JavaScript and Markdown to deliver precise, commit-level improvements. While the scope was limited to documentation and front end development, the changes addressed clarity and maintainability, supporting a smoother experience for future contributors.