Google Workspace (multi-account) MCP server

mcp-google-multi

The most complete local Google Workspace MCP server: Gmail, Drive, Calendar, Sheets, Docs, Slides, Forms, Contacts, Tasks, Chat, Meet, Analytics (GA4), Search Console, Classroom, Vault, Admin and more — every OAuth-reachable API method as a tool, across multiple Google accounts at once, from Claude Code or any MCP client.

• 🧰 Exhaustive — 942 tools across 29 services, now including Google Analytics (GA4), + an escape hatch for anything else → COVERAGE.md
• 🔑 Multi-account — drive any number of Google accounts by alias, or fan one call out across all of them
• 🔒 Private by design — your own OAuth app, tokens encrypted at rest (AES-256-GCM), writes deny-by-default, no telemetry, no metering — it talks only to Google
• 🌐 Local or remote — runs locally over stdio, or self-hosted over HTTP with its own built-in OAuth 2.1 server (Claude Code's /mcp login and the claude.ai connector, zero custom UI). Pull-and-up Docker Compose with optional automatic HTTPS → remote setup
• ✉️ Built for real work — send and read email in Markdown with attachments and one-call replies, an interactive setup wizard with a doctor self-check, and per-account scope profiles → features tour

Quick setup

New to all this? It's written for someone who just installed Claude Code and has never made an API key. Copy-paste each step; it says what you'll see. (Already technical? The Configuration reference is the terse version.)

1. Install it. Get Node.js (the green "LTS" button, version 22 or newer), then run:

npm install -g mcp-google-multi

Claude Desktop user? You can skip npm entirely: download the mcp-google-multi.mcpb bundle from the latest release, double-click it (or drag it into Claude Desktop → Settings → Extensions), and fill in the values from step 2 when prompted.

1. Make your Google key (the one manual part, a few minutes, because Google has no way to script it). Follow the step-by-step Google Cloud setup, or just ask Claude Code: "walk me through creating a Google OAuth Desktop client for mcp-google-multi." You finish with two values, a Client ID and a Client Secret. It's free and private to you.

1. Put them in a file. In the folder you'll run from, make a file named .env and paste this, filling in your values:

GOOGLE_CLIENT_ID=paste-your-client-id
   GOOGLE_CLIENT_SECRET=paste-your-client-secret
   # any short nickname, then your Gmail address:
   GOOGLE_ACCOUNTS=me:you@gmail.com

No encryption key to make: the server generates and stores one for you.

1. Sign in. A browser opens; pick your account and click Allow:

mcp-google-multi auth --account me

1. Add it to Claude Code, then restart Claude Code:

claude mcp add mcp-google-multi -s user -- npx -y mcp-google-multi

Stuck at any point? Run mcp-google-multi doctor. It inspects every part and prints the exact fix for anything wrong (a missing sign-in, a Google API you still need to switch on, and so on). Once it reads all-green, just talk to Claude: "summarize my unread email."

Got more than one Google account? Add them together, like GOOGLE_ACCOUNTS=me:you@gmail.com,work:you@company.com, and run step 4 once per nickname.

On a server or from claude.ai? Advanced path: Remote / HTTP setup. Coming from v5? v6 migration guide.

Shortened. The full README is on GitHub.