mcp-ical

5 ICS / iCalendar tools for Claude. Generate, parse, and one-click-add events to Google/Outlook. Free, MIT.

Pure-logic calendar utilities. No API keys, no accounts, no SaaS coupling. Generates standards-compliant RFC 5545 ICS files.

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Install

{
  "mcpServers": {
    "ical": {
      "command": "npx",
      "args": ["-y", "@dpm-tools/mcp-ical"]
    }
  }
}

Requires Node.js 22.18+.

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Tools (5)

• create_event — Generate ICS for a single event (title, start, end, location, description, organizer, attendees, all-day).
• create_calendar — Build a multi-event ICS file.
• parse_ics — Parse existing ICS content into event objects.
• google_calendar_url — One-click "Add to Google Calendar" URL (no auth).
• outlook_calendar_url — One-click "Add to Outlook Web Calendar" URL.

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Example prompts

• "Make an ICS file for a meeting tomorrow 2pm-3pm titled 'Sprint planning' at Zoom URL ..."
• "Build a calendar from these 5 events..."
• "Parse this ICS file and tell me when the next event is."
• "Give me a Google Calendar 'Add' link for the team offsite on 2026-07-15."

See examples/prompts.md for more.

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Why this exists

Existing calendar MCPs assume a SaaS backend (Google Calendar OAuth, Microsoft Graph). For LLMs that just need to emit a standards-compliant ICS file or build an add-to-calendar link, those are overkill.

mcp-ical is the pure-logic version:

• Zero dependencies beyond @modelcontextprotocol/sdk
• Zero API keys
• Zero accounts
• RFC 5545 line folding, escape sequences, attendee/organizer support

Perfect for "tell me about an event then make an ICS attachment" workflows.

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Sister servers from dpm

• mcp-devkit, mcp-public-data, mcp-diff, mcp-archive, mcp-citations — all free, all MIT.

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License

MIT © dpm (digital product mill)