About
A macOS app that provides an MCP server to access your Messages, Contacts, Reminders, Calendar, Location, Maps, and Weather. Works with Claude Desktop and other MCP-compatible clients.
Capabilities
Calendar - View and manage calendar events, including creating new events with customizable settings like recurrence, alarms, and availability status.
Contacts - Access contact information about yourself and search your contacts by name, phone number, or email address.
Location - Access current location data and convert between addresses and geographic coordinates.
Maps - Provides location services including place search, directions, points of interest lookup, travel time estimation, and static map image generation.
Messages - Access message history with specific participants within customizable date ranges.
Reminders - View and create reminders with customizable due dates, priorities, and alerts across different reminder lists.
Weather - Access current weather conditions including temperature, wind speed, and weather conditions for any location.
Installation
Download the iMCP app from iMCP.app/download (requires macOS 15.3 or later), or install via Homebrew:
brew install --cask mattt/tap/iMCP
Setup
- Open the app - you'll see a menu bar icon
- Click each service icon to activate it and grant the required macOS permissions
- Connect to your MCP client (Claude Desktop, Claude Code, Cursor, or Amp)
For Claude Desktop: Click the menu bar icon > "Configure Claude Desktop" to automatically add the configuration.
Technical Details
iMCP is a macOS app that bundles a command-line executable (imcp-server) which uses stdio transport. The app and CLI communicate via Bonjour for automatic discovery on the local network. Tool results are returned as JSON-LD documents using Schema.org vocabularies.
The Messages capability accesses the iMessage database (~/Library/Messages/chat.db) and includes a Swift implementation for decoding Apple's proprietary typedstream format.
Important Notes
- iMCP does not collect or store any of your data
- Requires macOS 15.3 or later
- Uses App Sandbox for security
- When a client first connects, you'll need to approve the connection
This server runs through your single 1Server connection. No extra config required.