macOS MCP app · 2026

Apple Core

Apple Core lets an assistant use Calendar, Notes, Mail, Messages, and other services, but it doesn’t decide which services or remote routes are available.

  • Swift
  • 77 tools
  • Local by default
Apple Core
  • notes.search
  • mail.search
  • calendar.events
  • reminders.list

What it connects

Apple Core is a signed and notarized menu bar app that serves 77 tools across Calendar, Reminders, Contacts, Location, Maps, Messages, Capture, Shortcuts, Notes, and Mail. Local clients connect over authenticated HTTP, with a bundled bridge for clients that still require standard input and output.

The controls

Each service has its own enable switch and another switch for remote access. Remote access is off by default and always requires authentication. It can run through an optional Cloudflare Tunnel with bearer authentication or OAuth 2.1 with PKCE.

How it started

Apple Core began as a hard fork of iMCP. I expanded its Notes and Mail tools, then replaced the original network transport with the serving approach from Bridgeport. The repository keeps the upstream licenses and documents each design it borrowed.