Multi-account MCP for Gmail, Calendar, Drive, Docs, and Sheets — 61 tools, token MCP server

google-workspace-mcp

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Multi-account, token-efficient MCP for Gmail + Calendar + Drive + Docs + Sheets. Built because the official Claude connector supports one account and returns full message/file bodies by default.

Why this exists

tool takes an account email; aliases are handled via Send-As identities.

• Multi-account: OAuth multiple mailboxes (work + personal + co-founder). Every

snippet, ...} for mail, {id, name, mime, modified, size, ...} for Drive). Bodies and file content are opt-in.

• Token-efficient: Search/list returns compact shapes ({id, from, subject,

on macOS, Credential Manager on Windows, Secret Service on Linux — not in plaintext files. No tokens in the vault, no tokens in any repo.

• Keyring-backed: Refresh tokens live in the OS credential store — Keychain

• macOS, Windows and Linux: one installer per platform, same connector.

Tools (v2, 63 tools)

Account management (3)

• gwsaccountadd — browser OAuth flow, adds a new authorized mailbox
• gwsaccountlist — list authorized accounts + default
• gwsaccountremove — remove local credential (doesn't revoke Google-side)

Gmail (12)

• gmail_search — search with Gmail operators. Compact response.
• gmail_read — read one message or full thread. Bodies opt-in.
• gmailsend — send mail, optional fromalias for Send-As identities
• gmail_draft — create a draft
• gmailreply — reply (preserves thread + headers), optional replyall
• gmaillabelslist — list all labels
• gmaillabelapply — batch add/remove labels
• gmail_archive — batch archive (remove INBOX)
• gmail_trash — batch move to trash
• gmailsendaslist — list Send-As identities on this mailbox
• gmailattachmentslist — list a message's attachments (filename, mime type, size)
• gmailattachmentsave — download one attachment to a local file, path returned for direct reading

Calendar (7)

• callistcalendars — list all calendars
• callistevents — list upcoming events (compact by default, verbose=True for full)
• calcreateevent — create event, optional Google Meet link
• calupdateevent — partial-update fields
• caldeleteevent — delete
• cal_freebusy — check busy windows for scheduling
• cal_respond — accept/decline/tentative

Shortened. The full README is on GitHub.