unreal-engine-mcp

unreal-engine-mcp is a local MCP server: MCP server for Unreal Engine 5 with 23 tools for game development automation. Install it from npm as unreal-engine-mcp-server.

Claude CodeCodexAntigravity

commandprompt

Terminal

claude mcp add unreal-engine-mcp -e LOG_LEVEL=... -e MCP_ROUTE_STDOUT_LOGS=... -e UE_PROJECT_PATH=... -e UE_EDITOR_EXE=... -e UE_SCREENSHOT_DIR=... -e MCP_AUTOMATION_PORT=... -e MCP_AUTOMATION_HOST=... -e MCP_AUTOMATION_ALLOW_NON_LOOPBACK=... -e MCP_AUTOMATION_CLIENT_MODE=... -e MCP_AUTOMATION_USE_TLS=... -e MCP_CONNECTION_TIMEOUT_MS=... -e MCP_REQUEST_TIMEOUT_MS=... -e MCP_AUTOMATION_MAX_MESSAGES_PER_MINUTE=... -e MCP_AUTOMATION_MAX_AUTOMATION_REQUESTS_PER_MINUTE=... -- npx -y unreal-engine-mcp-server

Run in your project folder. Add --scope user to use it everywhere.

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "unreal-engine-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "unreal-engine-mcp-server"
      ],
      "env": {
        "LOG_LEVEL": "...",
        "MCP_ROUTE_STDOUT_LOGS": "...",
        "UE_PROJECT_PATH": "...",
        "UE_EDITOR_EXE": "...",
        "UE_SCREENSHOT_DIR": "...",
        "MCP_AUTOMATION_PORT": "...",
        "MCP_AUTOMATION_HOST": "...",
        "MCP_AUTOMATION_ALLOW_NON_LOOPBACK": "...",
        "MCP_AUTOMATION_CLIENT_MODE": "...",
        "MCP_AUTOMATION_USE_TLS": "...",
        "MCP_CONNECTION_TIMEOUT_MS": "...",
        "MCP_REQUEST_TIMEOUT_MS": "...",
        "MCP_AUTOMATION_MAX_MESSAGES_PER_MINUTE": "...",
        "MCP_AUTOMATION_MAX_AUTOMATION_REQUESTS_PER_MINUTE": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

• Runtime: Node.js 18+ (runs with npx).
• MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over stdio.
• Environment variables: LOG_LEVEL, MCP_ROUTE_STDOUT_LOGS, UE_PROJECT_PATH, UE_EDITOR_EXE, UE_SCREENSHOT_DIR, MCP_AUTOMATION_PORT, MCP_AUTOMATION_HOST, MCP_AUTOMATION_ALLOW_NON_LOOPBACK, MCP_AUTOMATION_CLIENT_MODE, MCP_AUTOMATION_USE_TLS, MCP_CONNECTION_TIMEOUT_MS, MCP_REQUEST_TIMEOUT_MS, MCP_AUTOMATION_MAX_MESSAGES_PER_MINUTE, MCP_AUTOMATION_MAX_AUTOMATION_REQUESTS_PER_MINUTE