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mcp/harbor
Gemini CLI

Google CrUX MCP for Gemini CLI

io.github.a1-x-tech/mcp-google-crux

Real-user Core Web Vitals from the Chrome UX Report (CrUX) API for any origin or URL.

client:Gemini CLI transport:stdio runtime:npm

Install Google CrUX MCP in Gemini CLI

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

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux"
      ],
      "env": {
        "CRUX_API_KEY": "<CRUX_API_KEY>",
        "CRUX_API_BASE": "<CRUX_API_BASE>",
        "CRUX_TIMEOUT_MS": "<CRUX_TIMEOUT_MS>",
        "CRUX_MAX_RETRIES": "<CRUX_MAX_RETRIES>"
      }
    }
  }
}

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

Google CrUX MCP in other clients

Google CrUX MCP MCP server