google-calendar

google-calendar is a local MCP server: MCP server for Google Calendar integration with service account support and domain-wide delegation. Install it from npm as google-calendar-workspace-mcp-server.

Claude CodeCodexAntigravity

commandprompt

Terminal

claude mcp add google-calendar -e GCAL_SERVICE_ACCOUNT_CLIENT_EMAIL=... -e GCAL_SERVICE_ACCOUNT_PRIVATE_KEY=... -e GCAL_IMPERSONATE_EMAIL=... -e ENABLED_TOOLGROUPS=... -- npx -y google-calendar-workspace-mcp-server

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "google-calendar": {
      "command": "npx",
      "args": [
        "-y",
        "google-calendar-workspace-mcp-server"
      ],
      "env": {
        "GCAL_SERVICE_ACCOUNT_CLIENT_EMAIL": "...",
        "GCAL_SERVICE_ACCOUNT_PRIVATE_KEY": "...",
        "GCAL_IMPERSONATE_EMAIL": "...",
        "ENABLED_TOOLGROUPS": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

• Runtime: Node.js 18+ (runs with npx).
• MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over stdio.
• Environment variables: GCAL_SERVICE_ACCOUNT_CLIENT_EMAIL, GCAL_SERVICE_ACCOUNT_PRIVATE_KEY, GCAL_IMPERSONATE_EMAIL, ENABLED_TOOLGROUPS