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Unreal Engine MCP

Unreal Engine MCP is an MCP server that adds tools to AI assistants such as Claude Desktop, Claude Code and Cursor. EngineWire: drive the Unreal Editor (UE 5.0-5.8): levels, Blueprints, UI, materials, VFX and more. It has 980 GitHub stars, is released under the MIT license and runs locally with npx -y unreal-engine-mcp-server.

github.com/ChiR24/Unreal_mcp (opens in a new tab)

Data as of from the GitHub API and the official MCP registry; description from the project's repository. Report an error

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Install Unreal Engine MCP

Generated from the server's MCP registry entry. Replace your-value with your own values.

Claude Desktop

claude_desktop_config.json
{
  "mcpServers": {
    "unreal-engine-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "unreal-engine-mcp-server"
      ],
      "env": {
        "UE_PROJECT_PATH": "your-value",
        "MCP_AUTOMATION_CAPABILITY_TOKEN": "your-value"
      }
    }
  }
}

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

Claude Code

claude mcp add --env UE_PROJECT_PATH=your-value --env MCP_AUTOMATION_CAPABILITY_TOKEN=your-value --transport stdio unreal-engine-mcp -- npx -y unreal-engine-mcp-server

Cursor

.cursor/mcp.json
{
  "mcpServers": {
    "unreal-engine-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "unreal-engine-mcp-server"
      ],
      "env": {
        "UE_PROJECT_PATH": "your-value",
        "MCP_AUTOMATION_CAPABILITY_TOKEN": "your-value"
      }
    }
  }
}

Project file; use ~/.cursor/mcp.json to enable it in every project.

VS Code

.vscode/mcp.json
{
  "inputs": [
    {
      "type": "promptString",
      "id": "mcp_automation_capability_token",
      "description": "MCP_AUTOMATION_CAPABILITY_TOKEN",
      "password": true
    }
  ],
  "servers": {
    "unreal-engine-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "unreal-engine-mcp-server"
      ],
      "env": {
        "UE_PROJECT_PATH": "your-value",
        "MCP_AUTOMATION_CAPABILITY_TOKEN": "${input:mcp_automation_capability_token}"
      }
    }
  }
}

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

Environment variables

Variables the server reads at startup.

NameRequiredDescription
UE_PROJECT_PATHYesYour Unreal project folder or its .uproject file. The server reads the capability token from /Saved/MCP/capability-token and the WebSocket port from the…
MCP_AUTOMATION_CAPABILITY_TOKENsecretNoCapability token to present to the editor. Only needed when the server cannot read the project folder, for example over LAN.
MCP_AUTOMATION_PORTNoEditor WebSocket port. Default: the first Listen Ports entry in the project settings, else 8090.
MCP_AUTOMATION_HOSTNoEditor host to connect to. A LAN address also needs MCPAUTOMATIONALLOWNONLOOPBACK=true and Allow Non Loopback in the plugin settings.
MCP_AUTOMATION_ALLOW_NON_LOOPBACKNoSECURITY: allow a non-loopback MCPAUTOMATIONHOST. Enable only on a trusted network.
MCP_AUTOMATION_USE_TLSNoConnect with wss:// instead of ws://.
MCP_ADDITIONAL_PATH_PREFIXESNoExtra content roots to allow besides /Game, /Engine, /Script, /Temp and /Niagara, comma-separated. Example: /MyPluginContent/
MCP_CONNECTION_TIMEOUT_MSNoHow long to wait for the editor connection, in milliseconds.
MCP_REQUEST_TIMEOUT_MSNoOverrides every per-capability request timeout, in milliseconds. Leave unset: each capability gets a budget that fits its cost.
MCP_AUTOMATION_MAX_MESSAGES_PER_MINUTENoInbound messages per minute from the editor before the server disconnects.
LOG_LEVELNoLog level. Logs go to stderr.

About Unreal Engine MCP

EngineWire connects Claude, Cursor, VS Code or any other MCP client to a running Unreal Editor, and let it build levels, Blueprints, UI, materials, effects and more, through a native C++ editor plugin.

  • mcp
  • mcp-server
  • unreal-engine
  • unreal-engine-5

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FAQ

Unreal Engine MCP FAQ

Still curious? Email info@appsgit.com.

How do I install the Unreal Engine MCP MCP server?

Add the command npx -y unreal-engine-mcp-server to your MCP client: put it in claude_desktop_config.json for Claude Desktop, run claude mcp add for Claude Code, or add it to .cursor/mcp.json (Cursor) or .vscode/mcp.json (VS Code). The snippets on this page are ready to paste.

Is Unreal Engine MCP free?

The server is open source under the MIT license, so running it is free. It needs credentials (MCP_AUTOMATION_CAPABILITY_TOKEN) for the service it connects to, which may require a paid account.

Is Unreal Engine MCP actively maintained?

The most recent commit was on Oct 26, 2026. The latest release is v0.5.30, published Jun 5, 2026. appsgit only lists MCP servers with a commit in the last six months.