MCP or Not?

Draft: research not yet reviewed. Hidden from search engines and production.

OfficialClaude connector: yes

Google Calendar MCP server & Claude connector

Does Google Calendar have an official MCP server or Claude connector?

Official

As of October 2026, Google Calendar has an official Claude connector: Anthropic's directory lists it as made by Google, pointing at Google's remote Calendar MCP endpoint (calendarmcp.googleapis.com), a Developer Preview. Claude's docs say the connector is read-only, yet both Google's reference and the directory list create, update and delete event tools; the sources conflict, so test before relying on it.

Last checked

Verdict and evidence

What we checked
Google Calendar connector / Calendar MCP server (Google)
Published by
Google (official)
Runs
Hosted (remote)
Sign-in
OAuth sign-in
Stage
preview
Plan
Claude connector: Pro, Max, Team and Enterprise (Claude docs); on Team and Enterprise an Owner or Primary Owner enables it first. Google Workspace Developer Preview Program membership, a Google Cloud project and your own OAuth client are needed to use Google's server directly.
Endpoint
https://calendarmcp.googleapis.com/mcp/v1

Evidence

What an AI can do in Google Calendar

Read

  • List eventslist_events
  • Get an eventget_event
  • Search eventssearch_events
  • List calendarslist_calendars
  • Suggest meeting timessuggest_time

Create

  • Create an eventcreate_event

Update

  • Update an eventupdate_event
  • Respond to an invitationrespond_to_event

Delete

  • Delete an eventdelete_event

From the publisher’s documentation for the version we checked. Not every tool is listed.

Setup

Claude (claude.ai / Desktop)

Go to Customize > Connectors in claude.ai, find Google Calendar, select Connect and sign in to Google. On Team and Enterprise, an Owner or Primary Owner enables it for the organization first.

Source

Other clients

Google's guide shows an mcp_config.json entry for Google Antigravity (it names Claude as another supported host but gives no Claude-specific steps). Replace OAUTH_CLIENT_ID and OAUTH_CLIENT_SECRET with your own client.

{
  "mcpServers": {
    "calendar": {
      "serverUrl": "https://calendarmcp.googleapis.com/mcp/v1",
      "oauth": {
        "clientId": "OAUTH_CLIENT_ID",
        "clientSecret": "OAUTH_CLIENT_SECRET"
      }
    }
  }
}
Source

Safety check

  • Pass

    Publisher verified

    calendarmcp.googleapis.com is a googleapis.com endpoint documented on developers.google.com. Anthropic's directory lists the connector as 'Made by Google' with the same connector URL.

  • Pass

    Auth model

    OAuth 2.0 with your own Google Cloud OAuth client; scopes per Google's guide: calendar.calendarlist.readonly, calendar.events.freebusy and calendar.events.readonly. The Claude connector signs in with your Google account directly.

  • Flag

    Write and delete access

    Sources disagree. Claude's docs say Claude reads the calendar only and cannot create or change events or send invitations. Google's reference and Anthropic's directory both list create_event, update_event, delete_event and respond_to_event, while Google's setup guide lists only read/free-busy scopes (calendar.calendarlist.readonly, calendar.events.freebusy, calendar.events.readonly). Actual write behaviour was not tested; no read-only switch was verified.

  • Pass

    Tool-description injection scan

    Read the tool list and tool descriptions on Google's MCP reference page (and a Jev screen of the page); no text addressed to an AI was found. Live tools/list output was not inspected.

  • Unknown

    Repo maintenance

    Hosted by Google; no public server repository found. Google's setup page is marked Developer Preview. Setup guide last updated 2026-10-12.

Community alternatives

Built and maintained by third parties, not Google Calendar. Check the safety notes before connecting one to a real account.

Google Workspace MCP (workspace-mcp)

taylorwilsdon · Runs locally · OAuth sign-in

Calendar tools among 120+ Google Workspace tools (individual tool ids not inspected)

  • ⚠ Publisher verified: Independent community project, not published by Google.

FAQ

Is there an official Google Calendar connector for Claude?

Yes. Anthropic's directory lists Google Calendar as made by Google, using https://calendarmcp.googleapis.com/mcp/v1. Connect it under Customize > Connectors in claude.ai.

Can Claude create or change calendar events?

Sources conflict. Claude's docs say it only reads your calendar; Google's reference and Anthropic's directory list create_event, update_event and delete_event. Test with a harmless event first.

Which Claude plans include it?

Claude's docs say Pro, Max, Team and Enterprise. On Team and Enterprise an Owner or Primary Owner enables it before members can connect.

Does Google publish its own Calendar MCP server?

Yes, as a Developer Preview at calendarmcp.googleapis.com. Using it directly needs Developer Preview Program membership, a Google Cloud project and your own OAuth client.

Last reviewed .

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MCP or Not: Official · Checked Oct 2026

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