OpenWrt MCP Controller

This project provides a Model Context Protocol (MCP) server for managing OpenWrt devices. It allows you to interact with and control an OpenWrt router through a simple API.

The server utilizes fastmcp to expose OpenWrt functionalities as tools that can be called remotely.

1. Prerequisites

For the server to have full functionality, a custom LuCI RPC script must be placed on the target OpenWrt device.

Install sys.lua on OpenWrt

The sys.lua file in this repository extends the capabilities of the LuCI JSON-RPC interface. You must copy this file to your OpenWrt router for tools like system_status, network_status, and set_led_state to work.

1. Copy the file to your OpenWrt device: Use scp or any other file transfer method to copy sys.lua to your router.

   scp sys.lua root@<your_openwrt_ip>:/usr/lib/lua/luci/sys.lua

2. Verify Permissions: Ensure the file has the correct permissions.

   ssh root@<your_openwrt_ip> "chmod 644 /usr/lib/lua/luci/sys.lua"

2. Installation

You can install this package directly from PyPI.

pip install openwrt-mcp

3. Configuration

The server is configured through environment variables. You must set the following before running the server:

• OPENWRT_HOST: The full URL of your OpenWrt device (e.g., http://192.168.1.1).

• OPENWRT_PASSWORD: The login password for your OpenWrt device.

• OPENWRT_USERNAME: (Optional) The login username. Defaults to root.

Example:

export OPENWRT_HOST="http://192.168.1.1"
export OPENWRT_PASSWORD="your_secret_password"

4. Usage

Once installed and configured, you can start the MCP server with the following configuration:

{
    "mcpServers":{
        "openwrt-mcp":{
            "command":"uvx",
            "args": [
                "openwrt-mcp"
            ],
            "env":{
                "OPENWRT_HOST":"192.168.0.1",
                "OPENWRT_PASSWORD":"root",
                "OPENWRT_USERNAME":"12345678"
            }
        }
    }
}

The server will start and listen for incoming connections via standard I/O.

Available Tools

The following tools are exposed by the MCP server:

• reboot(): Reboots the OpenWrt device.

• system_status(): Retrieves system and board information.

• network_status(): Gets the status of all network interfaces.

• read_log(): Reads the system log (logread).

• set_led_state(state: str): Sets the state of the "Green" LED. state can be 'on' or 'off'.

• summary_log(): Provides a structured prompt template for an AI to summarize the output of read_log().