PluginBench
MCP Server
Active
MIT

Google CrUX MCP MCP Server

io.github.A1-x-Tech/mcp-google-crux

RepositoryRegistry

What is the Google CrUX MCP MCP server?

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

How to install Google CrUX MCP

Copy-paste configuration for popular MCP clients.

transport: stdio
Config generated by PluginBench — verify against the source before use.
Environment / auth
  • CRUX_API_KEY
    required
    secret

    Google Cloud API key with the Chrome UX Report API enabled (sent as the key= query parameter). Treat it as a secret.

  • CRUX_API_BASE

    API root host override.

  • CRUX_TIMEOUT_MS

    Per-request timeout in milliseconds.

  • CRUX_MAX_RETRIES

    Retries on transient errors (429, 5xx, network).

Claude Desktop
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>",
        "CRUX_API_BASE": "<YOUR_CRUX_API_BASE>",
        "CRUX_TIMEOUT_MS": "<YOUR_CRUX_TIMEOUT_MS>",
        "CRUX_MAX_RETRIES": "<YOUR_CRUX_MAX_RETRIES>"
      }
    }
  }
}
Cursor
~/.cursor/mcp.json
{
  "mcpServers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>",
        "CRUX_API_BASE": "<YOUR_CRUX_API_BASE>",
        "CRUX_TIMEOUT_MS": "<YOUR_CRUX_TIMEOUT_MS>",
        "CRUX_MAX_RETRIES": "<YOUR_CRUX_MAX_RETRIES>"
      }
    }
  }
}
Windsurf
~/.codeium/windsurf/mcp_config.json
{
  "mcpServers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>",
        "CRUX_API_BASE": "<YOUR_CRUX_API_BASE>",
        "CRUX_TIMEOUT_MS": "<YOUR_CRUX_TIMEOUT_MS>",
        "CRUX_MAX_RETRIES": "<YOUR_CRUX_MAX_RETRIES>"
      }
    }
  }
}
VS Code
.vscode/mcp.json
{
  "servers": {
    "mcp-google-crux": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>",
        "CRUX_API_BASE": "<YOUR_CRUX_API_BASE>",
        "CRUX_TIMEOUT_MS": "<YOUR_CRUX_TIMEOUT_MS>",
        "CRUX_MAX_RETRIES": "<YOUR_CRUX_MAX_RETRIES>"
      }
    }
  }
}
Claude Code
claude mcp add mcp-google-crux --env CRUX_API_KEY=<YOUR_CRUX_API_KEY> --env CRUX_API_BASE=<YOUR_CRUX_API_BASE> --env CRUX_TIMEOUT_MS=<YOUR_CRUX_TIMEOUT_MS> --env CRUX_MAX_RETRIES=<YOUR_CRUX_MAX_RETRIES> -- npx -y mcp-google-crux

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