During January 2026, Htiennv updated the MCP subcommands documentation in the openai/codex repository to reflect new authentication options, focusing on improving developer onboarding and clarifying security requirements. Working primarily with Rust and leveraging strong documentation skills, Htiennv identified outdated sections that could cause integration confusion and revised them to align with the latest authentication flows. The changes provided clear, actionable guidance for developers integrating with MCP subcommands, reducing the risk of misconfiguration. While the work was limited to a single feature and did not involve bug fixes, it demonstrated attention to detail and addressed a targeted documentation need effectively.