macOS Calendar & Reminders MCP Server

Give Claude native control of macOS Calendar and Reminders. A Swift MCP server built directly on EventKit - 29 tools for events, reminders, tags, batch operations, conflict detection, and undo/redo. Not just calendar events: it drives Reminders and tasks too.

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 · #116 OF 160 MAINTAINED PRODUCTIVITY · VERIFIED 2026-09-18

MIT · Swift · how we verify → /methodology

01 · Install macOS Calendar & Reminders

Claude Desktop

Settings → Extensions → Install, then select the https://github.com/kiki830621/che-ical-mcp/releases/download/v1.1.0/che-ical-mcp.mcpb .mcpb bundle

02 · 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.kiki830621 is GitHub-verified and matches the repo owner

03 · What macOS Calendar & 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 & Reminders

macOS Calendar & Reminders is maintained by kiki830621. We track 2 MCP servers from kiki830621 - 2 actively maintained, 44 combined GitHub stars, oldest repo from Jan 2026. Full record: all servers from kiki830621.

  1. che-apple-mail-mcp Apple Mail MCP - 44 tools, SQLite millisecond search, .emlx parser, batch ops ★ 8

05 · Facts

repository
github.com/kiki830621/che-ical-mcp
category
productivity - ranked #116 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.kiki830621/che-ical-mcp (active, first published 2026-02-06 · 2 versions)
packages
mcpb:https://github.com/kiki830621/che-ical-mcp/releases/download/v1.1.0/che-ical-mcp.mcpb

06 · macOS Calendar & Reminders FAQ

What is macOS Calendar & Reminders?

Give Claude native control of macOS Calendar and Reminders. A Swift MCP server built directly on EventKit - 29 tools for events, reminders, tags, batch operations, conflict detection, and undo/redo. Not just calendar events: it drives Reminders and tasks too.

Is macOS Calendar & 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 & Reminders

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