DisplayBuddy MCP Server

An MCP (Model Context Protocol) server that lets AI agents control Mac monitors via DisplayBuddy — adjust brightness, contrast, volume, input source, apply presets, sync displays, and more.

Works with Claude Desktop, Cursor, Windsurf, Cline, and any MCP-compatible client.

Prerequisites

1. macOS with DisplayBuddy installed and running

2. DisplayBuddy CLI installed: open DisplayBuddy > Settings > General > Install CLI Tool

3. Node.js 18+

Related MCP server: Playwright MCP for macOS

Installation

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "displaybuddy": {
      "command": "npx",
      "args": ["-y", "displaybuddy-mcp"]
    }
  }
}

Cursor

Add to your MCP settings:

{
  "mcpServers": {
    "displaybuddy": {
      "command": "npx",
      "args": ["-y", "displaybuddy-mcp"]
    }
  }
}

Smithery

npx -y @smithery/cli install displaybuddy-mcp --client claude

Available Tools

Example Prompts

Once connected, you can ask your AI assistant things like:

• "Dim all my monitors to 30%"

• "What displays are connected?"

• "Switch my Dell monitor to HDMI"

• "Activate my Night Mode preset"

• "Sync all displays to my main monitor"

• "Turn up the brightness on my external display"

• "Set up my coding environment — brightness 70, contrast 60"

How It Works

The MCP server wraps the displaybuddy CLI, which communicates with the running DisplayBuddy app via URL scheme. All operations are local — no data leaves your machine.

AI Agent → MCP Server → displaybuddy CLI → DisplayBuddy App → Your Monitors

Development

npm install
npm run build

# Test with MCP Inspector
npx -y @modelcontextprotocol/inspector node ./build/index.js

License

MIT