Unreal MCP
U

Unreal MCP

This is a server based on the Model Context Protocol (MCP) that allows AI assistants to control the Unreal Engine game engine through the remote control API, enabling game development automation. It supports various functions such as asset management, actor control, editor operations, level management, animation physics, visual effects, and Sequencer control.
2.5 points
5.0K

What is the Unreal Engine MCP Server?

This is a server based on the Model Context Protocol (MCP) that allows AI assistants (such as Claude, Cursor, etc.) to directly interact with the Unreal Engine editor. Through the remote control API, AI can perform various editor operations, from simple asset management to complex animation and visual effect creation, greatly improving the efficiency of game development.

How to use the Unreal Engine MCP Server?

Before use, ensure that Unreal Engine is installed and the necessary plugins are configured. Then install the MCP server via NPM and configure the connection information in the AI client. The server will automatically connect to Unreal Engine, and the AI assistant can then control the editor through natural language instructions.

Applicable Scenarios

Suitable for automation tasks in game development, rapid prototyping, batch operations, test scenario setup, visual effect debugging, animation preview, and other scenarios. It is particularly suitable for workflows that require frequent repetitive operations or complex combined operations.

Main Features

Asset Management
Browse, import, and create game assets, including materials, textures, models, etc. It supports multiple asset types and provides an intelligent caching mechanism to improve performance.
Actor Control
Generate, delete, and manipulate actors in the scene, supporting physical effects, position and rotation adjustment, component management, etc.
Editor Control
Control the editor state, including PIE (Play In Editor) sessions, camera operations, viewport mode switching, etc.
Level Management
Load and save levels, manage level lighting and environmental settings, and build the basic framework of the game world.
Animation and Physics
Create animation blueprints, state machines, and set up advanced features such as ragdoll physics and physical constraints.
Visual Effects
Generate particle effects, Niagara systems, GPU simulations, and debug shapes to create cool visual special effects.
Sequencer Control
Manage the Sequencer timeline, create cinematic animations, camera animations, and complex sequence controls.
Console Commands
Safely execute Unreal Engine console commands with a built - in dangerous command filtering mechanism to protect the project.
Environment Building
Create terrains, landscapes, and vegetation systems to quickly build the natural environment of the game world.
Blueprint Management
Create and edit blueprint classes, add components, set variables and functions, and implement visual programming.
Advantages
Improve development efficiency: Automate repetitive tasks through AI, saving a lot of manual operation time.
Lower the technical threshold: Non - technical users can control complex editor functions through natural language.
Flexible integration: Support multiple AI clients (Claude Desktop, Cursor, etc.).
Safe and reliable: Built - in dangerous command filtering to prevent accidental operations from damaging the project.
Automatic reconnection: Automatically attempt to reconnect when the network is interrupted to ensure service stability.
Performance optimization: The asset caching mechanism reduces repeated requests and improves response speed.
Limitations
Requires Unreal Engine to run: The Unreal Engine editor must be started to use it.
Plugin dependency: Multiple Unreal Engine plugins need to be enabled, and the configuration steps are numerous.
Network requirements: It needs to run in a local network environment, and additional configuration is required for remote connection.
Version limitation: Only supports Unreal Engine versions 5.0 - 5.6.
Learning curve: Basic Unreal Engine concepts and terms need to be understood.

How to Use

Environment Preparation
Ensure that Node.js 18+ and Unreal Engine 5.0 - 5.6 are installed. Enable the necessary plugins in Unreal Engine: Remote Control API, Remote Control Web Interface, Python Editor Script Plugin, Editor Scripting Utilities.
Configure Unreal Engine
Edit the project configuration file to enable remote execution and Python script support.
Install the MCP Server
Install the Unreal Engine MCP server globally or locally via NPM.
Configure the AI Client
Configure the MCP server connection information in AI clients such as Claude Desktop or Cursor.
Start and Use
Start the Unreal Engine editor, ensure that the AI client is connected, and then start controlling the editor through natural language.

Usage Examples

Rapid Scene Setup
Need to quickly create a test scene containing terrain, lighting, and several test models.
Batch Material Processing
Need to create and apply the same material settings to multiple models.
Performance Debugging
There are performance issues during game runtime, and various performance statistics need to be quickly viewed.
Animation Testing
Need to test the performance of character animations under different physical conditions.

Frequently Asked Questions

Why can't I connect to Unreal Engine?
Which Unreal Engine versions are supported?
How to ensure operation safety?
Is remote connection supported?
What should I do if there is no response when executing a command?
Can multiple AI clients be connected simultaneously?

Related Resources

GitHub Repository
Project source code and latest updates
NPM Package Page
NPM installation package and version information
MCP Protocol Documentation
Official specification of the Model Context Protocol
Unreal Engine Documentation
Official Unreal Engine documentation and tutorials
Docker Image
Docker containerized deployment

Installation

Copy the following command to your Client for configuration
{
  "mcpServers": {
    "unreal-engine": {
      "command": "npx",
      "args": ["unreal-engine-mcp-server"],
      "env": {
        "UE_HOST": "127.0.0.1",
        "UE_RC_HTTP_PORT": "30010",
        "UE_RC_WS_PORT": "30020",
        "UE_PROJECT_PATH": "C:/Users/YourName/Documents/Unreal Projects/YourProject"
      }
    }
  }
}

{
  "mcpServers": {
    "unreal-engine": {
      "command": "node",
      "args": ["path/to/Unreal_mcp/dist/cli.js"],
      "env": {
        "UE_HOST": "127.0.0.1",
        "UE_RC_HTTP_PORT": "30010",
        "UE_RC_WS_PORT": "30020",
        "UE_PROJECT_PATH": "C:/Users/YourName/Documents/Unreal Projects/YourProject"
      }
    }
  }
}
Note: Your key is sensitive information, do not share it with anyone.

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