Apple Reminders for Claude

Fast, native Apple Reminders access for Claude — works in Claude Desktop, Claude Cowork, and Claude Code (CLI). One signed Swift/EventKit binary, three distribution packages.

Reminder IDs are stable across sessions. A full CRUD round-trip takes under a second on a database with 300+ reminders. Umlauts, accents, CJK characters and emoji pass through unchanged.

Published by high5 ventures GmbH — signed with Developer ID Application: high5 ventures GmbH and notarized by Apple.

Quick start

You need a Mac running macOS 11 or later, and Claude Desktop.

1. Download apple-reminders.mcpb from the latest release.
2. Double-click it. Claude Desktop opens an install dialog — click Install.
3. Ask Claude something like "What's on my reminders for today?"

macOS asks for Reminders access on that first question. Allow it, and Claude can read and change your reminders.

No configuration is needed: the bundle contains the server and the signed binary, and Claude Desktop sets the paths on install.

Updating is the same three steps with the newer .mcpb.

Not using Claude Desktop? See Installation for Claude Code and other MCP clients.

Contents

• Description
• Features
• Usage examples
• Installation
• Configuration
• MCP tools
• Privacy policy
• Troubleshooting
• Support
• Architecture
• License

Description

Apple Reminders for Claude gives Claude full CRUD access to your macOS Reminders app. It wraps Apple's native EventKit framework in a signed Swift binary that returns stable UUIDs and structured JSON, and ships three ways:

All three ship the same binary and the same 13 tools, so behaviour does not differ between them.

Features

• 13 MCP tools covering the full reminder lifecycle: list lists, list reminders (open/completed/all), full-text search, today/overdue/scheduled smart queries, CRUD on individual reminders.
• Native EventKit — not AppleScript, not reverse-engineered SQLite scraping.
• Stable UUIDs — reminder IDs survive across sessions, unlike AppleScript URIs or CLI positional indexes.
• Tool safety annotations — every tool declares readOnlyHint / destructiveHint so Claude clients can auto-run queries but prompt for mutations.
• Language-neutral — the skill matches on intent, not keywords. Works identically in German, French, Spanish, Japanese, etc.
• Speed — full CRUD smoke-test completes in under 1 s on 300+ reminders across 10 lists.
• Signed + notarized — no Gatekeeper warnings; deployable via MDM.
• 100% local — no network I/O. See PRIVACY.md.

Usage examples

In Claude Desktop and Cowork the tools appear under Apple Reminders; in Claude Code the skill loads when you mention reminders. The examples below show the tool calls behind each answer.

Example 1 — "What's on my plate today?"

You: Was habe ich heute zu tun?

Claude (invokes get_today):

config.json

Copy

{ "status": "ok", "data": { "reminders": [
  { "id": "A1B2…", "name": "Zahnarzt-Termin bestätigen", "list": "Persönlich", "due_date": "2026-04-14T10:00:00" },
  { "id": "C3D4…", "name": "Rechnung #2026-0412 prüfen", "list": "Arbeit", "due_date": "2026-04-14T14:00:00" }
] } }

Claude: Du hast heute zwei offene Erinnerungen: den Zahnarzt-Termin um 10:00 (Persönlich) und die Rechnungs-Prüfung um 14:00 (Arbeit).

Example 2 — "Add a reminder to the groceries list"

You: Remind me to buy oat milk tomorrow at 6pm.

Claude (invokes create_reminder):

config.json

Copy

{ "list": "Groceries", "title": "Buy oat milk", "dueDate": "2026-04-15T18:00:00" }

Response:

config.json

Copy

{ "status": "ok", "data": { "reminder": { "id": "E5F6…", "name": "Buy oat milk", "due_date": "2026-04-15T18:00:00" } } }

Claude: Done — added "Buy oat milk" to Groceries for tomorrow at 18:00.

Example 3 — "Clean up what's overdue"

You: Show me everything that's overdue, then mark the Slack-DM one as done.

Claude (invokes get_overdue):

config.json

Copy

{ "status": "ok", "data": { "reminders": [
  { "id": "G7H8…", "name": "Reply to Alex in Slack DM", "list": "Work", "due_date": "2026-04-12T17:00:00" },
  { "id": "I9J0…", "name": "Review PR #482", "list": "Work", "due_date": "2026-04-13T12:00:00" }
] } }

Claude (invokes complete_reminder with id: "G7H8…"):

config.json

Copy

{ "status": "ok", "data": { "reminder": { "id": "G7H8…", "completed": true, "completion_date": "2026-04-14T18:22:01" } } }

Claude: Two overdue items: Slack reply (now marked done) and PR #482 review (still open).

Installation

Claude Desktop / Cowork

Download apple-reminders.mcpb from Releases and double-click it. Claude Desktop shows an install dialog; click Install, then grant Reminders access in the macOS privacy prompt on the first tool call.

Updating works exactly the same way — download the newer .mcpb and double-click it.

This is how the extension is installed. The two sections below cover other MCP clients; on a Mac with Claude Desktop you do not need them.

Claude Code (CLI)

/plugin marketplace add high5-ventures/apple-reminders-for-claude

Reload Claude Code before the next step; the plugin is not visible until the marketplace has been picked up.

/plugin install apple-reminders@high5-apple-reminders-for-claude

This path offers new versions automatically, but does not install them; you still confirm each update.

Any other MCP client (Cursor, Zed, …)

npm install -g @high5ventures/apple-reminders-mcp

Then add it to your client's MCP configuration:

{
  "mcpServers": {
    "apple-reminders": {
      "command": "apple-reminders-mcp"
    }
  }
}

Or skip the global install and let the client fetch it on demand:

{
  "mcpServers": {
    "apple-reminders": {
      "command": "npx",
      "args": ["-y", "@high5ventures/apple-reminders-mcp"]
    }
  }
}

The location of that file differs per client.

Build from source

git clone https://github.com/high5-ventures/apple-reminders-for-claude.git
cd apple-reminders-for-claude
./build.sh

Produces dist/reminders-eventkit (binary), dist/skill/ (Claude Code skill), and dist/apple-reminders.mcpb (Claude Desktop bundle). Builds are unsigned; see CONTRIBUTING.md for the signed release workflow.

Requirements for building: macOS 11+, Xcode Command Line Tools, Node.js 18+.

Configuration

No configuration is required for normal use. The extension runs with these defaults:

If you use the npm-distributed server with a non-standard MCP client, set REMINDERS_BINARY to the absolute path of the reminders-eventkit binary:

export REMINDERS_BINARY=/absolute/path/to/reminders-eventkit

The .mcpb and Claude Code plugin installations set this variable automatically.

MCP tools

All 13 tools return a stable JSON envelope — { "status": "ok", "data": ... } on success, { "status": "error", "code": "...", "message": "..." } on failure.

"Destructive" here follows the MCP specification: it means the operation mutates existing state irreversibly from the user's point of view. Claude clients use these hints to decide when to prompt for confirmation.

Privacy policy