UE5 MCP Bridge
MCP server bridging AI assistants to Unreal Engine 5 editor
What is UE5 MCP Bridge?
UE5 MCP Bridge is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to mcp server bridging ai assistants to unreal engine 5 editor
MCP server bridging AI assistants to Unreal Engine 5 editor
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- MCP server bridging AI assistants to Unreal Engine 5 editor
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx ue5-mcp-bridgeConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use UE5 MCP Bridge
The UE5 MCP Bridge connects AI assistants such as Claude and ChatGPT to the Unreal Engine 5 editor, exposing over 40 tools for spawning and manipulating actors, creating and modifying Blueprints, managing assets, controlling animation state machines, handling materials, and executing background async tasks — all through natural language. It acts as an HTTP bridge between the MCP client and a local backend server running inside UE5, making it a workflow accelerator for game developers who want to automate repetitive editor tasks with AI assistance.
Prerequisites
- Unreal Engine 5 installed with the companion UE5 backend plugin running on port 3000
- Node.js 16 or higher and npm installed
- The UE5 MCP Bridge repository cloned locally
- An MCP-compatible client such as Claude Desktop, Claude Code, or Cursor IDE
Clone the repository
Clone the UE5 MCP Bridge source to your machine.
git clone https://github.com/Natfii/unrealclaude-mcp-bridge.git
cd unrealclaude-mcp-bridgeInstall dependencies
Install all required Node.js packages.
npm installStart the UE5 backend
Launch Unreal Engine 5 with the companion backend plugin enabled. The plugin exposes an HTTP server on port 3000 that the MCP bridge connects to. Refer to the plugin documentation for setup.
Configure environment variables
Set UNREAL_MCP_URL to point at your running UE5 backend. The default is http://localhost:3000. Optionally enable INJECT_CONTEXT to auto-include UE5 API docs in every request.
export UNREAL_MCP_URL=http://localhost:3000
export INJECT_CONTEXT=false
export DEBUG=trueConfigure your MCP client
Add the server to your MCP client configuration, passing the index.js path and the UNREAL_MCP_URL environment variable.
Verify the connection
Ask your AI client to check the UE5 connection status. The bridge exposes a status check tool that confirms the backend is reachable.
UE5 MCP Bridge Examples
Client configuration
Add this block to claude_desktop_config.json or ~/.claude/settings.json for Claude Code. Replace the path with your actual clone location.
{
"mcpServers": {
"unreal": {
"command": "node",
"args": ["/absolute/path/to/unrealclaude-mcp-bridge/index.js"],
"env": {
"UNREAL_MCP_URL": "http://localhost:3000",
"INJECT_CONTEXT": "false",
"MCP_REQUEST_TIMEOUT_MS": "30000"
}
}
}
}Prompts to try
Use natural language to control the Unreal Engine 5 editor.
- "Spawn a point light at position 0, 0, 500 in the current level"
- "List all StaticMeshActors in the level"
- "Create a new Actor Blueprint called BP_Enemy"
- "Add a float variable called Health with default value 100 to BP_Player"
- "Search for all assets with 'Tree' in their name"
- "Create an animation Blueprint state machine with idle and run states"Troubleshooting UE5 MCP Bridge
Connection refused when the bridge tries to reach the UE5 backend
Ensure Unreal Engine 5 is running with the companion backend plugin active and that the plugin's HTTP server is listening on port 3000 (or whatever port UNREAL_MCP_URL points to). Check UE5's output log for plugin startup messages.
Requests time out on complex Blueprint or async operations
Increase the MCP_REQUEST_TIMEOUT_MS environment variable beyond the default 30000ms. For large Blueprint compilations or async tasks, values of 60000–120000ms may be needed.
AI assistant lacks context about available UE5 tools
Set INJECT_CONTEXT=true in the server environment. This automatically prepends UE5 API documentation to every request, helping the AI understand which tools are available and how to use them.
Frequently Asked Questions about UE5 MCP Bridge
What is UE5 MCP Bridge?
UE5 MCP Bridge is a Model Context Protocol (MCP) server that mcp server bridging ai assistants to unreal engine 5 editor It connects AI assistants to external tools and data sources through a standardized interface.
How do I install UE5 MCP Bridge?
Follow the installation instructions on the UE5 MCP Bridge GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with UE5 MCP Bridge?
UE5 MCP Bridge works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is UE5 MCP Bridge free to use?
Yes, UE5 MCP Bridge is open source and available under the NOASSERTION license. You can use it freely in both personal and commercial projects.
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Set Up UE5 MCP Bridge in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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