phonelink-mcp-server

MCP server that reads and interacts with the Phone Link (MyPhone) Windows app via UI Automation.
Since Microsoft doesn't offer public APIs for Phone Link, this server scrapes the UI using PowerShell + .NET's System.Windows.Automation.

Features

Related MCP server: precision-desktop

Requirements

• Windows 10/11 with Phone Link installed and configured

• Node.js >= 18

• PowerShell (Windows PowerShell 5.1+ or PowerShell Core 7+)

• Phone connected and paired in Phone Link

Setup

cd phonelink-mcp-server
npm install
npm run build

Claude Desktop Configuration

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "phonelink": {
      "command": "node",
      "args": ["C:/path/to/phonelink-mcp-server/dist/index.js"],
      "env": {
        "PHONELINK_PS_EXECUTABLE": "powershell.exe"
      }
    }
  }
}

Note: Use pwsh.exe instead of powershell.exe if you have PowerShell Core installed (recommended for better performance).

How It Works

Claude ←→ MCP (stdio) ←→ Node.js Server ←→ PowerShell Scripts ←→ UIAutomation ←→ Phone Link UI

1. Claude calls an MCP tool (e.g., phonelink_get_messages)

2. The Node.js server executes the corresponding PowerShell script

3. The PowerShell script uses .NET's System.Windows.Automation to:

   • Find the Phone Link window

   • Navigate to the correct tab

   • Traverse the UI element tree

   • Extract text, names, and metadata

4. Results are returned as JSON through the MCP protocol

Environment Variables

Troubleshooting

"Phone Link window not found"

• Make sure Phone Link is running (use phonelink_launch_app first)

• Check that Phone Link's window title matches expected names. Use phonelink_inspect_ui to debug.

• The server searches for: "Phone Link", "Collegamento al telefono", "Il tuo telefono", "Your Phone"

UI elements not found

• Phone Link updates may change the UI structure. Use phonelink_inspect_ui to see current elements.

• Try increasing max_depth in inspect_ui to find deeper elements.

• The PowerShell scripts include multi-language support (EN, IT, DE, ES) but your locale might use different strings.

Slow responses

• UI Automation traversal can be slow, especially with high max_depth.

• Keep max_depth at 10-12 for most operations.

• The first call after launching Phone Link may be slower while the UI loads.

Permission issues

• PowerShell must run with sufficient privileges to use UIAutomation.

• If running as a service, ensure the service account has access to the desktop session.

Limitations

• UI-dependent: Changes to Phone Link's UI can break scraping. Use inspect_ui to adapt.

• Single language per session: Element names depend on the Windows display language.

• No photo download: The photos tool lists metadata but cannot export actual image files.

• Sequential only: Only one tool should run at a time (concurrent UI automation will conflict).

• Foreground required: Phone Link window must be visible (not minimized) for some operations.

Development

npm run dev          # Watch mode
npm run build        # Build once
npm start            # Run server

License

MIT