During May 2026, this developer contributed to the betagouv/api-engagement repository by delivering two front-end features focused on configurability and user onboarding. They enhanced the broadcaster curl example to use a configurable API URL, replacing hardcoded values to support flexible deployment across environments. Additionally, they implemented an API key management interface for annonceurs, enabling users to generate, delete, and copy API keys directly from the settings. These changes, built with React and JavaScript, improved maintainability, security, and end-user autonomy. The work emphasized clean, scalable code and addressed environment clarity by ensuring correct sandbox URL display within the application interface.