During September 2025, Huudung Nguyen developed and refined API documentation for the Skatteetaten/api-dokumentasjon repository, focusing on the Innrapportering melk and Innrapportering tredjepartsopplysninger APIs. He delivered end-to-end documentation updates using JavaScript and Markdown, detailing API scope, delegation, system access, and technical specifications. His work included schema corrections, localization adjustments, and explicit status notes to clarify release readiness. By refreshing test data, navigation, and metadata, Huudung improved developer onboarding and ensured documentation consistency with the codebase. These updates enhanced maintainability and supported future API iterations, demonstrating a thorough approach to technical documentation and process alignment.