Contributed to the DIYgod/RSSHub repository by implementing Twitter API user authentication, enabling authenticated requests and user-specific data retrieval through the route/twitter endpoint. Focused on backend development using Node.js and TypeScript, the work involved integrating user credential handling and improving access token management with optional chaining to prevent runtime errors. Updated documentation to reflect the new authentication workflow and made minor code improvements for robustness. The feature enhanced the platform’s ability to securely access Twitter data on behalf of users, providing a more flexible API integration experience while maintaining clear and accurate technical documentation for future maintainers and users.