How to install Unreal_mcp in Gemini CLI

EngineWire: drive the Unreal Editor (UE 5.0-5.8): levels, Blueprints, UI, materials, VFX and more.

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We found Unreal_mcp in the official MCP registry. Our automated check passed on Nov 1, 2026 (it confirms the server is published and reachable), but no one at CuratedMCP has reviewed its code, permissions or credentials handling. Check what it can access before you give it keys. Scan your machine free to see every MCP server you have installed.

Steps

1Install Node.js 18 or newer (for npx)
2Open ~/.gemini/settings.json (or .gemini/settings.json in your project)
3Add the entry below. If the file already has "mcpServers", add just the inner entry
4Restart Gemini CLI and run /mcp to confirm

Configuration

~/.gemini/settings.json

{
  "mcpServers": {
    "unreal": {
      "command": "npx",
      "args": [
        "-y",
        "unreal-engine-mcp-server"
      ],
      "env": {
        "UE_PROJECT_PATH": "<ue-project-path>"
      }
    }
  }
}

Replace the values in angle brackets. Optional settings are listed below.

Environment variable	Required	What it is
UE_PROJECT_PATH	Yes	Your Unreal project folder or its .uproject file. The server reads the capability token from <project>/Saved/MCP/capability-token.
MCP_AUTOMATION_CAPABILITY_TOKENsecret	No	Capability token to present to the editor. Only needed when the server cannot read the project folder.
UNREAL_MCP_URL	No	The editor's native MCP endpoint (Project Settings > EngineWire > Native MCP Port).
LOG_LEVEL	No	Log level. Logs go to stderr.

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