Google CrUX MCP

MCP server · by A1-x-Tech

Web APIs npm v1.1.0

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

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version registry version 1.1.0

npm
npx -y mcp-google-crux

npm
npx -y mcp-google-crux@1.1.0

Setup by client

Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.

claude_desktop_config.json

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

{
  "mcpServers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux@1.1.0"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>"
      }
    }
  }
}

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env CRUX_API_KEY=<YOUR_CRUX_API_KEY> mcp-google-crux -- npx -y mcp-google-crux

claude mcp add --env CRUX_API_KEY=<YOUR_CRUX_API_KEY> mcp-google-crux -- npx -y mcp-google-crux@1.1.0

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

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

{
  "mcpServers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux@1.1.0"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>"
      }
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux@1.1.0"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>"
      }
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

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

{
  "mcpServers": {
    "mcp-google-crux": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux@1.1.0"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_CRUX_API_KEY>"
      }
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

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).

GitHub

最近更新于 25 天前 · MIT license

About this server

Google CrUX MCP English Русский A1 Google CrUX MCP brings real user Core Web Vitals data into an AI app. Check whether a public site or page passes LCP, INP and CLS, compare mobile with desktop, and see how the metrics changed over time. It reads G…

Summary from the project README — github.com/A1-x-Tech/mcp-google-crux

Distributed as npm, listed under Web APIs. Review our MCP security guide before granting access to real data.

Frequently asked questions

What does the Google CrUX MCP MCP server do?

How do I install Google CrUX MCP?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is Google CrUX MCP free to use?

The MCP server itself is free to install. The source is public on https://github.com/A1-x-Tech/mcp-google-crux. Any third-party service it calls may require its own API key and account.

Which clients support Google CrUX MCP?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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