AddCal

Manage the calendars other people subscribe to — not your own schedule. Most calendar MCP servers connect an assistant to your personal Google or Outlook calendar. AddCal is the other side of that: publishing. Point your assistant at the public calendars, event listings and subscribe links your audience actually follows. **19 tools covering:** - Create and manage public calendars and calendar collections - Create, update, duplicate and delete events, including recurring series — with `preview-recurring-dates` to check a series before committing it - Record RSVPs and send event invites - List subscribers, pull analytics and team usage - Search across calendars, events and people **Built for** events programmes, class and course schedules, sports fixtures, community and venue calendars, conference agendas — anywhere the calendar is a published artefact rather than a personal diary. **Auth:** OAuth 2.1 with PKCE and dynamic client registration. The assistant acts as you, limited to your team and your plan. Anything that emails people — invites and RSVPs — requires explicit confirmation before it runs, and event deletion is permanent. Included with any AddCal plan, no separate fee. [Documentation](https://addcal.co/documentation/mcp-server)

First seen 2 Oct 2026. Evidence as of 2 Oct 2026.