Worked on improving the reliability of LibreChat by addressing credential loading for tool integrations. Focused on backend development using JavaScript and TypeScript, implementing a fix that ensures the user_provided sentinel and whitespace-only values are properly skipped during credential processing. This change prevents invalid API keys from reaching runtime, reducing tool initialization failures and runtime errors. The solution aligned loadAuthValues with existing authentication logic and introduced regression tests to safeguard against future regressions. Through careful API integration and comprehensive testing, the work enhanced the stability of Gemini and related tools, contributing to more resilient environment-driven configuration within the LibreChat repository.