Add this MCP server to Claude Code.
Name: Google Calendar MCP
Merge into: ~/.claude/mcp.json under mcpServers

---
{
  "mcpServers": {
    "google-calendar": {
      "command": "npx",
      "args": ["-y", "google-calendar-mcp"],
      "env": {
        "GOOGLE_CLIENT_ID": "<YOUR_CLIENT_ID>",
        "GOOGLE_CLIENT_SECRET": "<YOUR_CLIENT_SECRET>",
        "GOOGLE_REDIRECT_URI": "http://localhost:3000/oauth/callback"
      }
    }
  }
}

// ── Setup ────────────────────────────────────────────────────────────────────
// 1. Create a project in Google Cloud Console (https://console.cloud.google.com)
// 2. Enable the Google Calendar API
// 3. Create OAuth 2.0 credentials (Desktop app type)
// 4. Download the credentials and fill in the env vars above
// 5. On first use, you'll be prompted to authorize via browser
//
// ── Available tools ──────────────────────────────────────────────────────────
// list_events            list upcoming events (default: next 7 days)
// create_event           create a new calendar event
// update_event           update an existing event
// delete_event           delete an event
// get_freebusy           check availability for a time range
// list_calendars         list all calendars in the account
// search_events          search events by keyword