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.
@mingdedi
Basic information
Enable llm to control screen brightness or ...
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"
}
}
}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.
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+.
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.
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.
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.
Many laptop internal screens do not support DDC/CI. This tool is primarily for external monitors. Use Windows’ built‑in brightness control instead.
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).
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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