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Gemini CLI

Three.js DevTools MCP for Gemini CLI

io.github.dmitriygolub/threejs-devtools

Inspect and edit Three.js scenes, materials, shaders, lights in real time from any AI agent

client:Gemini CLI transport:stdio runtime:npm

Install Three.js DevTools MCP in Gemini CLI

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

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{
  "mcpServers": {
    "threejs-devtools": {
      "command": "npx",
      "args": [
        "-y",
        "threejs-devtools-mcp"
      ],
      "env": {
        "DEV_PORT": "<DEV_PORT>",
        "BRIDGE_PORT": "<BRIDGE_PORT>",
        "BROWSER": "<BROWSER>",
        "HEADLESS": "<HEADLESS>",
        "CHROME_PATH": "<CHROME_PATH>"
      }
    }
  }
}

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

Three.js DevTools MCP in other clients

Three.js DevTools MCP MCP server