Developed a provider credentials cleanup feature for the langgenius/dify repository, enabling users to choose whether to delete or retain API keys when uninstalling plugins. This enhancement improved backend security and user control by reducing the risk of orphaned credentials and consolidating the uninstallation workflow within a single codebase. The implementation focused on robust API development and database management using Python, ensuring maintainability and minimizing potential credential leakage. Collaboration with other contributors ensured code quality and a seamless integration into the existing backend architecture. The work addressed a key business need for secure plugin lifecycle management without introducing new bugs during the process.