0n3
MCP servers · Google Calendar · MCP server + skill

Connect Claude Code to Google Calendar

One line gives Claude Code your Google Calendar account as tools: 5 endpoints, events, calendars, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude Code's access alone any time.

Get the line for Claude CodeConnect Google Calendar first

Three steps

  1. Create a free 0n3 account and connect Google Calendar. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Claude Code. The terminal agent. One command, then every connection you hold is a tool in your shell. The skill file teaches it how 0n3 works.
  3. Ask Claude Code: whoami. Then: "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>"

The line above carries a placeholder; 0n3.app/install mints a real key named for Claude Code and fills it in.

What Claude Code can then do in 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

Google Calendar in other AI clients

Claude (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

Claude Code with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints