macOS Calendar and Reminders MCP Server
macOS Calendar and Reminders MCP server (29 tools). Native Swift EventKit, iCloud/Google/Exchange.
People who work with automation, calendar and eventkit and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Swift.
VERIFIED ACTIVE
LAST COMMIT 2026-09-08 · ★ 36 · #115 OF 160 MAINTAINED PRODUCTIVITY · VERIFIED 2026-09-18
MIT · Swift · how we verify → /methodology
01 · Install macOS Calendar and Reminders
Claude Desktop
Settings → Extensions → Install, then select the https://github.com/PsychQuant/che-ical-mcp/releases/download/v1.14.1/che-ical-mcp-1.14.1.mcpb .mcpb bundle02 · Evidence
Security posture
What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.
runs as Claude Desktop extension (.mcpb bundle)
license MIT - declared in the repository
registry namespace io.github.PsychQuant is GitHub-verified and matches the repo owner
03 · What macOS Calendar and Reminders can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
Latest releases
v1.18.0 · 2026-09-08
Added · undo(discard_id) can explicitly remove a blocked top history record by the stable ID from undo_history; stale IDs and active history execution are rejected (#206, #214). · Explicit event_recurrence_rules and…
v1.17.0 · 2026-09-07
194 - reminder recurrence on read, and explicit completion results. · Added - list_reminders / search_reminders expose has_recurrence, the full public recurrence_rules (including frequency_raw_value) and a due object…
v1.16.1 · 2026-08-31
v1.16.1 · 184 - non-object recurrence value now rejected with an explicit error（was silently dropped, creating a non-recurring event while the response looked successful）。 · 190 - all_day + timezone pairing now…
04 · Who maintains macOS Calendar and Reminders
macOS Calendar and Reminders is maintained by psychquant. We track 2 MCP servers from psychquant - 2 actively maintained, 42 combined GitHub stars, oldest repo from Jan 2026. Full record: all servers from psychquant.
05 · Facts
- repository
- github.com/psychquant/che-ical-mcp
- category
- productivity - ranked #115 of 160 actively-maintained productivity servers as of 2026-09-18.
- release cadence
- 9 releases in the last 90 days (latest 2026-09-08)
- registry
- io.github.PsychQuant/che-ical-mcp (active, first published 2026-07-05 · 2 versions)
- packages
- mcpb:https://github.com/PsychQuant/che-ical-mcp/releases/download/v1.14.1/che-ical-mcp-1.14.1.mcpb
06 · macOS Calendar and Reminders FAQ
What is macOS Calendar and Reminders?
macOS Calendar and Reminders MCP server (29 tools). Native Swift EventKit, iCloud/Google/Exchange.
Is macOS Calendar and Reminders still maintained?
Yes - as of 2026-09-18, its last commit was 2026-09-08 and it shipped 9 releases in the last 90 days. We re-verify nightly.
07 · Alternatives to macOS Calendar and Reminders
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