io.github.p-l-ta/calendar-mcp
Calendar.app
Is the Calendar.app MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.
List, search, and manage calendar events via macOS Calendar.app across all configured accounts.
alive probed 2026-11-15 · unchanged since 2026-10-31
- Run it
- npx -y @p-l-ta/calendar-mcp@1.0.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- calendar-app-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.2 % of a 1M context window
- Count
- 2.0k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 2.0k. The o200k_base estimate is 1.1k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/p-l-ta/calendar-mcp
- Registry
- active, updated 2026-05-08 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.70×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| create_event | 450 | 264 | 23 % |
| list_events | 356 | 209 | 18 % |
| update_event | 347 | 204 | 18 % |
| search_events | 324 | 190 | 17 % |
| delete_event | 174 | 102 | 9 % |
Compare this server with others.
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Other registry entries on npmjs.com, the ones next to this name; all of them.
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- io.github.ozten/cantrip · alive
- Mail.app io.github.p-l-ta/mail-mcp · alive
- DJ Claude io.github.p-poss/dj-claude · crashed on start
- io.github.p1va/symbols · crashed on start
- io.github.p1xelapp/solana-nft-mcp · alive
Servers that mention calendar.
- CalendarMCP ai.calendarmcp/server · needs auth
- Calaf ai.calaf/calaf · needs auth
- Calfeed ai.calfeed/calfeed · needs auth
- Chronary ai.chronary/mcp · alive
- Contio MeetingOS ai.contio/meetingos · needs auth
- OmniSignal ai.omnisignal/omnisignal · needs auth
- Timothe's Growth Calendar ai.timothe/growth-calendar · needs auth
- ai.smithery/Funding-Machine-ghl-mcp-fundingmachine · not found
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.