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mcp/harbor
Gemini CLI

Gmail MCP for Gemini CLI

io.github.a1-x-tech/mcp-google-gmail

MCP server for the Gmail API: search, read and send email, manage drafts, labels and the trash.

client:Gemini CLI transport:stdio runtime:npm

Install Gmail MCP in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

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{
  "mcpServers": {
    "mcp-google-gmail": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-gmail"
      ],
      "env": {
        "GOOGLE_GMAIL_CLIENT_ID": "<GOOGLE_GMAIL_CLIENT_ID>",
        "GOOGLE_GMAIL_CLIENT_SECRET": "<GOOGLE_GMAIL_CLIENT_SECRET>",
        "GOOGLE_GMAIL_REFRESH_TOKEN": "<GOOGLE_GMAIL_REFRESH_TOKEN>",
        "GOOGLE_GMAIL_ACCESS_TOKEN": "<GOOGLE_GMAIL_ACCESS_TOKEN>",
        "GOOGLE_GMAIL_OAUTH_PORT": "<GOOGLE_GMAIL_OAUTH_PORT>",
        "GOOGLE_GMAIL_API_BASE": "<GOOGLE_GMAIL_API_BASE>",
        "GOOGLE_GMAIL_TIMEOUT_MS": "<GOOGLE_GMAIL_TIMEOUT_MS>",
        "GOOGLE_GMAIL_MAX_RETRIES": "<GOOGLE_GMAIL_MAX_RETRIES>"
      }
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs

Gmail MCP in other clients

Gmail MCP MCP server