Worked on improving documentation accuracy for the wallet fetch permissions feature in the coinbase/smart-wallet-docs repository. Focused on refining Markdown-based MDX files by correcting a syntax error in the type definition for extraData, ensuring that code examples and type annotations accurately reflect the Wallet Fetch Permissions API. This targeted fix enhanced the reliability of developer guidance and reduced onboarding friction by making documentation more precise and easier to follow. Emphasized traceable, review-friendly changes with explicit commits, supporting auditability and maintainability. Utilized skills in documentation and Markdown to maintain high standards for technical clarity and safer integration of wallet permissions features.