apple-suite-mcp

Secure, modular, opt-in MCP connector for the Apple app suite — Calendar, Reminders, Contacts, Notes, Mail, Messages, Maps, Photos, Music, Shortcuts.

A security-focused fork and rewrite of supermemoryai/apple-mcp (MIT).

Status: 1.0.0 — all ten modules implemented, everything disabled by default. See DESIGN.md for the architecture and CLAUDE.md for development guidance.

Modules

Mail, Messages, and Shortcuts are never exposed over the remote transport.

Related MCP server: local-apple-data

Why another Apple MCP?

The popular upstream is convenient but risky: it interpolates untrusted strings into AppleScript (injection → RCE), grabs broad permissions at once, auto-updates from @latest, and has no confirmation gates. This project keeps the same feature surface with a much smaller attack surface:

Design highlights

• Capability model. A module that isn't enabled contributes zero tools/ resources and never triggers a macOS permission prompt.

• Activate what you use. apple-mcp enable calendar / enable reminders --write. Changes apply on restart (deliberately, to prevent runtime coercion).

• No injection by construction. Untrusted data is passed as structured args to a Swift/JXA helper, never concatenated into executable script text. Enforced by tests/injection/ and a CI static guard.

Install

Do not use @latest or --no-cache. Pin a version.

git clone https://github.com/HanlunWang/apple-suite-mcp.git
cd apple-suite-mcp
npm ci
npm run build          # compiles TypeScript + builds and signs the Swift helpers

Then point your MCP client at the built server (absolute path, no auto-update):

{
  "mcpServers": {
    "apple-suite": {
      "command": "node",
      "args": ["/absolute/path/to/apple-suite-mcp/dist/src/server.js"]
    }
  }
}

Nothing is exposed until you enable a module — see below. Building the Swift helpers requires the Xcode command line tools; the JXA-backed modules (notes, mail, messages send, music) need no build step.

Capability control

apple-mcp status                 # module matrix + config path
apple-mcp enable calendar        # read-only
apple-mcp enable reminders --write
apple-mcp enable messages --yes  # FDA module: requires explicit acknowledgement
apple-mcp disable mail

Changes apply on server restart (deliberate — a running session cannot be coerced into enabling capabilities). Config lives at ~/.apple-mcp/config.json, created locked-down (everything disabled) on first run.

The model can queue an enable request via the capabilities_request_enable tool, but it only becomes real when you approve it:

apple-mcp pending            # see what the model asked for
apple-mcp approve calendar   # apply it (FDA modules re-prompt for acknowledgement)
apple-mcp reject calendar    # or discard it

Remote access (optional)

The default transport is stdio (no network exposure). To serve Claude over HTTP, switch transport in the config to Streamable HTTP:

// ~/.apple-mcp/config.json
"transport": {
  "type": "http",
  "auth": "oauth2.1",              // or "apikey" (key auto-generated, 0600)
  "bind": "127.0.0.1",             // expose further only behind your own TLS proxy
  "port": 8765,
  "allowRemoteWrite": false,        // remote sessions are read-only by default
  "oauth": {
    "issuer": "https://your-authorization-server.example",
    "audience": "https://your-host.example/mcp"   // tokens for anything else are rejected
  }
}

Remote sessions always get a reduced surface: Mail and Messages are never registered over HTTP, write tools require allowRemoteWrite: true, and every request must carry a bearer token (JWT verified against the authorization server's JWKS with strict issuer + audience checks, per RFC 8414/9728).

Develop

Requires Node ≥ 22.6 to run TS directly (CI uses 24); the built dist/ runs on ≥ 20.

npm ci
npm run build          # compile TS + build the Swift eventkit-helper
npm run lint           # static injection guard
npm test               # node:test — includes the injection regression suite
npm run dev            # stdio server

Integration tests against the real EventKit stores (they trigger a macOS permission prompt and touch your default calendar/reminder list) are opt-in:

APPLE_MCP_INTEGRATION=1 npm test

Security

See SECURITY.md. Report vulnerabilities privately.

License

MIT. Retains upstream attribution — see NOTICE.