- Our basic checks: 4 of 4 passed
- No key to enter
- Another maker (mintmcp.com), not the service owner
Runs in the cloud
Guide 4 · 4 min read · Checked Nov 11, 2026
Let AI check your calendar and book meetings (Google Calendar)
Let AI tell you when you’re free, summarise your week and help add new meetings, without scrolling through your calendar.
What you need
- A Google account that uses Google Calendar
- Claude, ChatGPT or Gemini (plans differ; see each app below)
- For a work account, your administrator may need to allow it first
1Easiest: the connector already in your AI app
Claude, ChatGPT and Gemini already have a Google Calendar connector. Switch it on in settings and sign in to Google. Nothing to install.
ClaudeTwo Anthropic help pages disagree: one says all plans, the other says Pro, Max, Ultra, Team and Enterprise
Open Claude on the web or the desktop app, go to “Customize > Connectors”, then click the “+” button next to Connectors
Choose Google Calendar and click “Connect”
Sign in to Google and allow access, then in a chat click “+”, choose “Connectors”, turn on Google Calendar and ask about your meetings
The two pages also disagree about booking: one says Claude can create, update and delete events; the other says it can only read · If Free can’t click Connect, you need to upgrade · On Team and Enterprise, an organisation owner must enable it first
Checked Nov 11, 2026 · Source: support.claude.com (1) · support.claude.com (2) · claude.com (3)
ChatGPTPlus and above, per OpenAI’s release notes (opened to Plus worldwide on 13 Aug 2025); the help pages don’t say Free can use it
Open ChatGPT and go to “Settings > Plugins” (very old mobile apps may say Apps)
Choose Google Calendar and select “Connect” (if you see “Install plugin”, select that first)
Sign in to Google, review the permissions, then go back to the chat and ask about your meetings
On Plus and above you can connect several calendars (say, personal and work) and ask ChatGPT about them together
Checked Nov 11, 2026 · Source: help.openai.com (1) · help.openai.com (2) · help.openai.com (3)
GeminiWorks with a personal Google account; the help pages don’t say you need to pay
Go to gemini.google.com, click “Customize” in the sidebar (if you don’t see it, click “More” first), then click “Connectors” at the top
Find Google Workspace, click “Add” and follow the on-screen steps
In a chat, type @, choose Google Calendar, then ask or say what to book
Gemini adds events to your default calendar unless you name another one, and can use secondary and shared calendars · Keep “Keep Activity” on
Checked Nov 11, 2026 · Source: support.google.com (1) · support.google.com (2)
2Way 2: an MCP made by the service itself
If Google publishes its own Calendar MCP in the registry, it shows up here. We compare the maker’s verified domain with Google’s domains, not just the name.
There is no MCP made by the service itself in the registry we check yet (data as of Nov 11, 2026). Use way 1 for now.
3Last resort: an MCP from someone else
These are not made by Google. Your meetings and the people you meet pass through that maker or run on your computer. Use them only when way 1 doesn’t work, and read the “Basic checks” first.
WireCat Google Calendar
Your Google Calendar for agents: sync, search and change events. Sign in with the gcal CLI first.
- Our basic checks: 2 of 2 passed
- No key to enter
- Another maker (wirecat.dev), not the service owner
Runs on your computer
Google Calendar
MCP server for Google Calendar integration with service account support and domain-wide delegation.
- Our basic checks: 2 of 2 passed
- You will need to enter: GCAL_SERVICE_ACCOUNT_CLIENT_EMAIL, GCAL_SERVICE_ACCOUNT_PRIVATE_KEY, GCAL_IMPERSONATE_EMAIL
- Another maker (pulsemcp.com), not the service owner
Runs on your computer
Try typing
- “Which afternoons am I free next week?”
- “Summarise all my meetings tomorrow in time order”
- “Book a one-hour team meeting this Friday at 10 am”
Stuck? Try this
Google Calendar isn’t in the list
Some Claude and ChatGPT plans can’t use it yet; see the plan under each app above · In Gemini, look for Google Workspace instead
AI booked the wrong calendar
Name the calendar in your request, such as “in my work calendar” · Gemini uses your default calendar unless you say otherwise
Times are off
Say the time zone in your request, such as “Bangkok time”, and check the time zone in Google Calendar settings
AI says it can’t book
Some apps or plans can only read your calendar. Ask AI for the details and add the event yourself in Google Calendar
Keep your data safe
- Invitations from other people can hide instructions for the AI (prompt injection) in the event details. Read before you let AI accept, delete or send invitations.
- Your calendar shows where you are and when you’re away from home. Don’t share calendar summaries publicly.
- When you stop using it, disconnect it in your AI app and remove its access on your Google account’s security page.
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