Configuration

Configuration

Environment variables and settings for Unreal MCP.

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Required

Variable	Description	Example
UE_PROJECT_PATH	Path to Unreal project	C:/Projects/MyGame

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Optional

Variable	Default	Description
MCP_AUTOMATION_HOST	127.0.0.1	WebSocket host
MCP_AUTOMATION_PORT	8091	WebSocket port
LOG_LEVEL	info	Logging level
WASM_ENABLED	true	Enable WASM acceleration

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Example Configuration

# Windows
set UE_PROJECT_PATH=C:\Projects\MyGame
set LOG_LEVEL=debug

# Linux/Mac
export UE_PROJECT_PATH=/home/user/projects/MyGame
export LOG_LEVEL=debug

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MCP Client Config

Claude Desktop

{
  "mcpServers": {
    "unreal-engine": {
      "command": "npx",
      "args": ["unreal-engine-mcp-server"],
      "env": {
        "UE_PROJECT_PATH": "C:/Projects/MyGame",
        "LOG_LEVEL": "info"
      }
    }
  }
}

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See Also

• Installation - Setup guide
• Tools Reference - Available tools