0n3
MCP servers · scheduling

Google Calendar MCP server

Calendar management — events, schedules, availability. Hosted by 0n3: 5 endpoints your AI can call with your own Google Calendar account, from Claude, ChatGPT, Cursor, Claude Code, Codex or Gemini CLI. One sign-in, one key per AI, a receipt for every call.

Connect Google CalendarInstall into your AIWatch it work

5 endpoints2 categoriesauth: oauthhosted

What your AI can do with Google Calendar

Events · Manage calendar events4
List eventsGET /calendars/{calendarId}/events
Create an eventPOST /calendars/{calendarId}/events
Update an eventPUT /calendars/{calendarId}/events/{eventId}
Delete an eventDELETE /calendars/{calendarId}/events/{eventId}
Calendars · List calendars1
List calendarsGET /users/me/calendarList

Install in three steps

  1. Create a free account at 0n3.app and connect Google Calendar: paste a key or sign in through a door. It lands in your vault, encrypted.
  2. Open 0n3.app/install, pick your AI. A key is made for that AI alone; copy the line it gives you.
  3. Ask your AI: whoami. It answers with your connected services. Then ask it to list events in Google Calendar.
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"

Connect Google Calendar to

Claude Code + Google CalendarMCP server + skillClaude (desktop & claude.ai) + Google CalendarconnectorChatGPT + Google Calendarconnector · GPT actionCodex CLI + Google CalendarMCP serverGemini CLI + Google CalendarMCP serverCursor + Google CalendarMCP serverVS Code (Copilot) + Google CalendarMCP serverWindsurf + Google CalendarMCP server

More scheduling MCP servers

Calendly3 endpoints

Questions

What can an AI do with the Google Calendar MCP server?

5 things: events, calendars. Every call runs with your own Google Calendar connection and lands on a receipt.

Do I need to run anything on my computer?

No. 0n3 is hosted. Connect Google Calendar once, install 0n3 into your AI with one line, done.

Where does my Google Calendar key go?

Into your 0n3 vault, encrypted, one record per connection. The AI never sees it.