Apple Contacts MCP Server

ACMS (Apple Contacts MCP Server) is a Model Context Protocol (MCP) server that provides read-only access to your macOS Contacts using AppleScript. This server allows Claude Desktop to search and retrieve contact information. At present it is read-only.

Features

• Read-only access to macOS contacts database via AppleScript
• No native dependencies - uses AppleScript through osascript command
• Multiple search methods: by name or general query
• Flexible matching: both exact and partial matching options

Installing ACMS on Claude Desktop

To install ACMS on Claude Desktop, download the latest release from the GitHub project page, double-click the downloaded file, and follow the prompts inside Claude Desktop.

Available Tools

1. search_contacts

General-purpose search that searches contact names:

• query: Search across contact names
• limit: Maximum results to return (default: 50)

2. get_contact_by_name

Search contacts by name with exact or partial matching.

3. get_all_contacts

Retrieve all contacts (use with caution for large contact lists).

4. get_contact_count

Simple diagnostic tool that returns the total number of contacts in your address book.

5. get_contact_names

Diagnostic tool that returns the names of the first few contacts (useful for testing).

6. check_permissions

Diagnostic tool to check if the required permissions are granted to access Contacts.

7. test_contact_processing

Advanced diagnostic tool to test contact processing and identify performance issues.

Building From Source

1. Clone or download this repository
2. Install dependencies:

   npm install
   

3. Make the script executable:

   chmod +x src/index.js
   

4. Run the tests (optional but fun):

   npm run test
   

5. Package the DXT

   npx @anthropic-ai/dxt pack
   

Then double-click the mac-contacts-mcp-server.dxt file to add it to Claude Desktop.

Permissions

The first time you run this server, macOS will request permission to access your contacts through AppleScript. You must grant this permission for the server to function. The server uses AppleScript to communicate with the Contacts app, ensuring read-only access to your contact data.

Usage Examples

Once configured in Claude Desktop, you can use natural language to interact with your contacts:

• "Search for John Smith"
• "Find contacts with the name Mike"
• "Show me the first few contacts"
• "How many contacts do I have?"

Requirements

• macOS: This server only works on macOS due to AppleScript dependency
• Node.js: Version 14 or higher (no native compilation required)
• Permissions: Contacts access permission when prompted by macOS

Security

• This server provides read-only access to your contacts via AppleScript
• No contact data is stored or transmitted outside of Claude Desktop
• Uses standard macOS AppleScript security model
• Error messages are user-friendly and don't expose system details

Troubleshooting

"Error accessing contacts" message

• Ensure you've granted contacts permission when prompted by macOS
• Check that the Contacts app is accessible (try opening it manually)
• Verify AppleScript permissions in System Preferences > Security & Privacy > Privacy > Automation
• Make sure Node.js has permission to execute osascript commands

Server not appearing in Claude Desktop

• Check the configuration file path and syntax
• Ensure the server file path is correct and the file is executable
• Restart Claude Desktop after configuration changes

No contacts returned

• Verify your contacts database has data (check the Contacts app)
• Try using different search terms or the get_all_contacts tool with a limit

Caveats

• "But Apple will eventually build one macOS MCP server to rule them all." I know that but don't care. I'm a nerd and like building stuff.
• "But Anthropic will see all of my contacts." Then don't install it.

Development

To run the server directly for testing:

npm start

The server uses stdio transport and will log initialization messages to stderr.