Worked on the awslabs/mcp repository to enhance documentation usability and reliability. Introduced Mermaid diagram rendering and a dark/light theme toggle to the documentation site, improving visual clarity and accessibility for users. Strengthened the MkDocs configuration by tightening pre-commit YAML validation, ensuring consistent documentation builds across CI/CD pipelines. Addressed a broken image link by switching from a relative path to an absolute GitHub URL, which resolved display issues and reduced onboarding confusion. Utilized Markdown and YAML to implement these changes, focusing on configuration and documentation skills. The work contributed to smoother developer onboarding and more stable documentation workflows for the project.