Connects Claude to Gmail, Calendar, Drive, Docs, and Sheets with 61 tools across multi-account OAuth. Returns compact metadata by default (subject lines, file names, event summaries) and fetches full bodies or content only when you ask, keeping token usage down. Handles Send-As identities for email aliases, supports threaded replies, calendar free/busy checks, Drive comments and permissions, Sheets named ranges and conditional formatting, and Docs tracked changes. Stores refresh tokens in macOS Keychain instead of plaintext. Built because the official Claude connector locks you to one account and pulls entire message bodies upfront. Useful when you're juggling work and personal Google accounts or need fine-grained control over what gets loaded into context.