Worked on the menloresearch/mujoco-wasm repository to deliver comprehensive documentation for new CLI tools, focusing on mjx-testspeed and mjx-viewer within the mujoco-mjx package. Leveraged RST to create clear usage guidelines and practical examples, supporting both performance tuning and interactive model visualization. The documentation centralized operational guidance, streamlined developer onboarding, and improved traceability by integrating version control history through Copybara. Emphasized discoverability and maintainability, ensuring that new and existing contributors could efficiently utilize and extend the CLI tools. The work addressed onboarding challenges and enhanced workflow transparency, with a technical focus on documentation best practices and developer experience.