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mcp/harbor
Gemini CLI

unreal engine mcp for Gemini CLI

io.github.chir24/unreal-engine-mcp

MCP server for Unreal Engine 5 with 23 tools for game development automation.

client:Gemini CLI transport:stdio runtime:npm

Install unreal engine mcp in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

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

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs

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