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Monitor Control MCP Server

@mingdedi

Repository

Basic information

Category

Other

Transports

stdio

Author

mingdedi

Submitted by

mingdedi

About Monitor Control MCP Server

Enable llm to control screen brightness or ...

#agents#windows#monitor#brightness

Monitor Control MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "monitor-control": {
      "command": "uv",
      "args": [
        "run",
        "monitor-control-mcp"
      ],
      "cwd": "C:\\path\\to\\monitor-control-mcp"
    }
  }
}

Monitor Control MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Monitor Control Mcp?

Monitor Control Mcp is a screen brightness control tool built on the Model Context Protocol (MCP). It allows AI assistants to intelligently adjust monitor brightness, contrast, and query RGB gain values over DDC/CI. It is designed for Windows 10/11 users with monitors that support DDC/CI and requires Python 3.10+.

How to use Monitor Control Mcp?

Clone the repository, install dependencies with uv sync or pip install -e ., then configure an MCP client (e.g., Claude Desktop, Cursor IDE) with the command uv and args ["run", "monitor-control-mcp"] pointing the working directory to the project path. The server exposes tools such as get_monitor_info, set_brightness, adjust_brightness, set_contrast, get_contrast, get_gain, and get_all_gains. Admin rights may be required.

Key features of Monitor Control Mcp

  • Detect all DDC/CI‑compatible monitors
  • Set brightness to any percentage (0–100%)
  • Adjust brightness relatively from current value
  • Control specific monitors or all monitors simultaneously
  • Automatic resource management to prevent handle leaks
  • Set and query contrast (0–100%)
  • Query red/green/blue gain (write disabled for compatibility)

Use cases of Monitor Control Mcp

  • Ask the AI to report current brightness of all monitors
  • Request a dimmer screen for night use (relative adjustment)
  • Set brightness to an exact percentage across all or a specific monitor
  • Increase contrast only on the primary monitor
  • Check the current RGB gain balance of a display

Frequently asked questions

1

Why is no DDC/CI‑capable monitor detected?

The monitor may not support DDC/CI, the feature may be disabled in the OSD menu, or an unsupported cable/adapter is being used. Enable DDC/CI in the monitor’s OSD and use a quality DisplayPort/HDMI cable.

2

Why does setting or getting brightness fail?

This can be caused by insufficient permissions (run the terminal/IDE as administrator), a temporarily unresponsive monitor, or another program controlling the display. Restart the monitor and retry.

3

Can I control my laptop’s built‑in display?

Many laptop internal screens do not support DDC/CI. This tool is primarily for external monitors. Use Windows’ built‑in brightness control instead.

4

Why can’t I set RGB gain via `set_gain`?

The `set_gain` tool has been disabled due to poor hardware compatibility. Many monitors reject DDC/CI writes for gain, treat them as read‑only, or lock writes in preset modes (e.g., Standard, Game).

5

How do I fix “MCP server failed to start”?

Confirm Python ≥3.10, run `uv sync` to install dependencies, and verify the `cwd` path in the MCP client configuration points to the correct project directory. Check error logs for details.

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