Worked on the Automattic/vip-go-mu-plugins repository to address a critical issue in file service endpoint handling. Focused on improving API integration and configuration management using PHP, the developer refactored the API client to utilize a full URI for file service endpoints by replacing the previous endpoint variable with a URI-based approach. This update included modifying the default configuration to incorporate the https:// scheme, ensuring that endpoint URLs are constructed securely and correctly. The changes reduced errors in URL construction and improved reliability across different environments, demonstrating careful attention to cross-environment compatibility and robust configuration practices within the codebase.