Unreal Engine MCP Bridge

# Unreal Engine MCP (Model Context Protocol) Bridge This project provides a bridge between text-based AI models and Unreal Engine 5.5+ using the Model Context Protocol (MCP). It allows you to control Unreal Engine using natural language commands and Python scripts. ## Overview The Unreal MCP Bridge enables: - Creating and manipulating Blueprints - Spawning and modifying actors in the level - Working with Blueprint nodes and connections - Managing project settings and input mappings - Creating and modifying UMG widgets - And much more! ## Requirements - Unreal Engine 5.5 or later with Python support enabled - Python 3.10 or later - `uv` package manager (recommended) or pip ## Installation 1. Clone this repository to your local machine 2. Install dependencies using `uv`: ```bash uv pip install -e . ``` Or using pip: ```bash pip install -e . ``` 3. Make sure Unreal Engine is running with Python support enabled ## Usage ### Starting the MCP Server To start the MCP server, run: ```bash python unreal_mcp_server.py ``` This will start the server and register all available tools for interacting with Unreal Engine. ### Using Example Scripts The `examples` directory contains several example scripts that demonstrate how to use the MCP to interact with Unreal Engine: - `add_cube.py`: Spawns a cube actor in the level with customizable properties - `create_rotating_cube_blueprint.py`: Creates a Blueprint with a cube that rotates continuously - `create_simple_game.py`: Creates a simple game with a player character, collectibles, and score display To run an example script: ```bash python examples/add_cube.py ``` ### Available Tool Categories The MCP Bridge provides tools in several categories: #### Editor Tools Tools for working with the Unreal Editor and actors in the level: - Getting and finding actors - Spawning and deleting actors - Setting actor transforms and properties - Taking screenshots - Selecting actors #### Blueprint Tools Tools for creating and modifying Blueprint assets: - Creating new Blueprints - Adding and removing components - Setting component properties - Compiling Blueprints #### Node Tools Tools for working with Blueprint graph nodes and connections: - Adding various node types (events, functions, variables) - Connecting nodes - Finding and deleting nodes #### Project Tools Tools for project-level operations: - Creating input mappings - Setting project settings - Creating and managing levels - Setting up GameModes #### UMG Tools Tools for creating and modifying UMG widgets: - Creating Widget Blueprints - Adding various widget types (Text, Button, Image, etc.) - Binding widget events - Managing widget properties ## Extending the MCP You can extend the MCP by adding new tools to the appropriate tool modules in the `tools` directory. Each tool should be registered with the MCP server in `unreal_mcp_server.py`. ## Troubleshooting - Make sure Unreal Engine is running before starting the MCP server - Check that Python support is enabled in your Unreal Engine project - Verify that the MCP server is running and listening for commands - Look for error messages in the console output ## License This project is licensed under the MIT License - see the LICENSE file for details.