Developed a direct fetch mechanism for trusted URLs within the gristlabs/grist-core repository, focusing on enhancing document action reliability in multi-worker, self-hosted environments. The work involved modifying backend fetch logic in TypeScript to allow trusted internal URLs to bypass the GRIST_PROXY_FOR_UNTRUSTED_URLS proxy, thereby resolving issues with duplicate document actions and intermittent connection errors. Comprehensive end-to-end tests were added to validate behavior across trusted and untrusted URL scenarios, ensuring robust API integration and workflow stability. This targeted feature reduced user-facing errors, improved cross-node document fetching reliability, and lowered maintenance overhead in distributed deployments through careful backend development and testing.