Google CrUX MCP

Name: Google CrUX MCP
Author: A1-x-Tech

作者：A1-x-Tech版本 1.2.1i★ –i在你的电脑上运行

注册名称io.github.A1-x-Tech/mcp-google-crux

安装

概览

作者提供的说明（英文原文）

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

PopNx MCP 的三大支柱

这三项永远不会合并成一个分数：意见、测量和人气是不同的东西。

用户评价i暂无评价评价功能将在后续阶段与账户功能一起开放
我们的基础检查i1 项中通过 1 项依据公开信息检查；尚未扫描代码
使用情况i起步阶段↓ 527/周 · ★ –

它能帮你做什么

我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。

连接方式: 在你的电脑上运行
传输方式: stdio
分类: 网页与浏览器
你需要填写：CRUX_API_KEY

安装

选择你使用的 AI 应用，然后复制设置。

安装之前

基础检查：1 项中通过 1 项
在你的电脑上运行，拥有你的用户账户的权限（文件、网络、应用）。
需要你自己填写： CRUX_API_KEY, CRUX_API_BASE, CRUX_TIMEOUT_MS, CRUX_MAX_RETRIES

标为机密的值是你账户的钥匙。千万不要分享给别人，也不要粘贴到聊天里。

你需要

npm已安装 Node.js（用于 npx 命令）

你用的是哪个应用？

ClaudeClaude CodeCursorVS CodeChatGPT

在上方选择你的应用。我们会记住它，下次按钮会显示“安装到 …”。

打开 Claude Desktop → Settings → Developer → Edit Config，把下面的内容粘贴到 claude_desktop_config.json

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

在终端中运行这条命令

claude mcp add google-crux --env CRUX_API_KEY=your-value --env CRUX_API_BASE=your-value --env CRUX_TIMEOUT_MS=your-value --env CRUX_MAX_RETRIES=your-value -- npx -y mcp-google-crux

运行前请先填写空着的值。

在 Cursor 中打开

或者自己复制设置

粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json

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

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

在 VS Code 中打开

或者自己复制设置

粘贴到项目中的 .vscode/mcp.json

{
  "servers": {
    "google-crux": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-google-crux"
      ],
      "env": {
        "CRUX_API_KEY": "your-value",
        "CRUX_API_BASE": "your-value",
        "CRUX_TIMEOUT_MS": "your-value",
        "CRUX_MAX_RETRIES": "your-value"
      }
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

这个服务器在你的电脑上运行，而 ChatGPT 只能连接互联网上的服务器。请选择其他应用。

你的选择通过 Cookie 保存在这台设备上，无需账户。

需要你填写的值

CRUX_API_KEY 机密必填 env
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 env
API root host override.
CRUX_TIMEOUT_MS env
Per-request timeout in milliseconds.
CRUX_MAX_RETRIES env
Retries on transient errors (429, 5xx, network).

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同，请以 README 为准。

它能做什么

它在你的电脑上运行；安装后，工具列表会显示在你的 AI 应用中。

基础检查i

我们检查的是任何人都能看到的信息；我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月10日

✓ 通过
作者与仓库一致
注册名称已通过 GitHub 账户 A1-x-Tech 验证，该账户拥有此仓库
… 尚未检查
仍在维护
我们还没有从 GitHub 读取这个仓库
… 尚未检查
有许可证
我们还没有从 GitHub 读取这个仓库
– 不适用
端点有响应
它在你的电脑上运行，没有互联网端点
– 不适用
使用 OAuth 登录
在你的电脑上运行，改用本地设置
… 尚未检查
工具描述中没有隐藏指令
它在你的电脑上运行；我们只能读取互联网端点的工具列表

与“网页与浏览器”中的其他服务器比较i

星标数多于此分类中其他 1411 个服务器的 0%
发布到注册中心的时间比此分类中其他 1411 个服务器的 78% 更新
基础检查结果等于或优于此分类中其他 1411 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时，星标数才计入。

常见问题

Google CrUX MCP 安全吗？

它在 1 项适用的基础检查中通过了 1 项。我们没有阅读代码。在添加密钥或令牌之前，请先看看这个服务器要求哪些权限，并使用只具备所需权限的密钥。

它需要哪些密钥或代码？

你需要填写：CRUX_API_KEY

它在我的电脑上运行还是在云端？

它在你的电脑上运行。你的 AI 应用会在需要时启动它，数据不会经过作者的服务器（除非它自己调用在线服务）。

它还在维护吗？

GitHub 仓库最后更新于–，最新版本（1.2.1）于9天前进入注册中心。

哪些应用可以使用它？

支持 MCP 的应用，例如 Claude Desktop、Claude Code、Cursor 和 VS Code。你的电脑上还需要有 Node.js。

有什么可以替代它？

同一分类中有：Browser Use, Chrome DevTools MCP, MCP Server Browser

替代选择

同一分类中其他作者的服务器，按星标数排序。

如何看卡片：↓ 每周下载量i★ GitHub 星标i三大支柱：评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

Browser Use

Browser agents and stealth cloud browsers for AI: run web tasks, fill forms, extract data.

作者：browser-use广泛使用↓ 155.2万/周★ 12万20天前更新

电脑或云端✓ browser-use.com

安装

Chrome DevTools MCP

MCP server for Chrome DevTools

作者：ChromeDevTools广泛使用↓ 188.4万/周★ 5.5万18天前更新

在你的电脑上运行

安装

MCP Server Browser

MCP server for browser use access

作者：bytedance广泛使用↓ 792/周★ 4万14个月前更新

在你的电脑上运行

安装

作者的 README

打开 README

按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。

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 Google’s Chrome UX Report dataset — field data collected from Chrome users, not a synthetic speed test or a way to change your site.

6 read-only tools. Core Web Vitals assessment, device comparison, origin-versus-page comparison, 40-week trend and raw latest or historical records.
Real-user data. It is the same CrUX field data used by PageSpeed Insights and Google’s Core Web Vitals signals.
Clear availability boundary. Only public origins and URLs with enough real-user traffic have data; no_data is a valid result.
Known quota cost. CrUX allows 150 queries per minute per project. Device comparison makes four API calls; origin-versus-page makes two.

Start with a read-only question:

Does https://example.com pass Core Web Vitals on mobile?

Connect the server · Explore use cases · Open technical documentation

See it work in a minute

You: Does https://example.com/pricing pass Core Web Vitals on mobile?

Assistant: Shows p75 LCP, INP and CLS, their good/needs-improvement/poor ratings and the overall result. Nothing changes.

You: Compare this page with the site average and show how mobile differs from desktop.

Assistant: Compares the origin and URL, then device groups and their traffic shares. All six tools read the public CrUX dataset only.

Quick start
What you can ask it to do
How to read CrUX data
Getting access
Configuration
Data, limits and background work
Technical documentation
Support

Quick start

You need Node.js 20+ and a Google Cloud API key with Chrome UX Report API enabled.

Create a restricted API key.
Add the server to your AI app.
Ask the read-only question above.

Codex

In Settings → MCP servers, select Add server, choose STDIO, enter the command npx -y mcp-google-crux@latest and environment variables CRUX_API_KEY, then select Save and Restart.

codex mcp add google-crux --env CRUX_API_KEY=your_key -- npx -y mcp-google-crux@latest

codex mcp list

Codex MCP documentation

Claude Code

claude mcp add --env CRUX_API_KEY=your_key --transport stdio --scope user google-crux -- npx -y mcp-google-crux@latest

claude mcp list

Claude Code MCP documentation

Claude Desktop

The current official path is Settings → Extensions. For a custom desktop extension, open Advanced settings → Extension Developer → Install Extension…, select a .mcpb file and follow the prompts.

This repository currently publishes an npm stdio package and does not contain a .mcpb bundle. For Claude Desktop builds that still support local configuration, use the following JSON stdio configuration as a fallback:

{"mcpServers":{"google-crux":{"command":"npx","args":["-y","mcp-google-crux@latest"],"env":{"CRUX_API_KEY":"your_key"}}}}

In those builds, save it to ~/Library/Application Support/Claude/claude_desktop_config.json on macOS or %APPDATA%\Claude\claude_desktop_config.json on Windows.

Claude Desktop MCP documentation

Cursor

Add {"mcpServers":{"google-crux":{"type":"stdio","command":"npx","args":["-y","mcp-google-crux@latest"],"env":{"CRUX_API_KEY":"your_key"}}}} to ~/.cursor/mcp.json on macOS/Linux or %USERPROFILE%\.cursor\mcp.json on Windows. Cursor MCP documentation

VS Code

Run MCP: Open User Configuration and add:

{"servers":{"google-crux":{"type":"stdio","command":"npx","args":["-y","mcp-google-crux@latest"],"env":{"CRUX_API_KEY":"${input:crux_api_key}"}}},"inputs":[{"type":"promptString","id":"crux_api_key","description":"Google Cloud API key","password":true}]}

Check it with MCP: List Servers. VS Code MCP documentation

What you can ask it to do

Does this public origin or URL pass Core Web Vitals?
Compare phone, desktop, tablet and all-device results.
Is this page faster or slower than the site average?
How did LCP, INP and CLS change during the last 25 weeks?
Show the raw CrUX histograms and percentiles for a technical review.

How to read CrUX data

CrUX reports a rolling 28-day window, updated daily. Historical data is weekly and updates on Mondays. The key value is p75: 75% of observed visits are at or below it. get_core_web_vitals interprets metric thresholds for you; raw record tools expose full histograms and density fractions.

No data does not mean the site is broken. It means Google has no sufficiently large public Chrome-user sample for that origin, URL or device group. Tablets and individual URLs often have no data.

Getting access

In Google Cloud Console, create or select a project; no billing account is needed for CrUX.
Enable the Chrome UX Report API.
Create an API key in APIs & Services → Credentials.
Restrict the key to Chrome UX Report API and pass it as CRUX_API_KEY.

The key is stored in the MCP client configuration and is sent in the API request URL, so treat it as a password.

Configuration

Variable	Required	Description
`CRUX_API_KEY`	Yes	Google Cloud key with Chrome UX Report API enabled.
`CRUX_API_BASE`	No	API base URL override.
`CRUX_TIMEOUT_MS`	No	Per-request timeout; default `30000` ms.
`CRUX_MAX_RETRIES`	No	Retries for 429, 5xx and network failures; default `3`.

Data, limits and background work

Read-only public dataset. The server cannot alter sites, Search Console, CrUX records or Google rankings.
Quota-aware retries. It retries 429, 5xx and network errors with backoff. Keep compound comparisons in mind when budgeting the 150 queries per minute project quota.
No background monitoring. The server works only while called. If your AI app supports scheduled tasks, it can create a recurring performance report.
Anonymous telemetry. It sends installation and version data plus tool names, never API keys, queried URLs, results, arguments or prompts. For each tool call it also sends the outcome and, on failure, an excerpt of the error text with e-mails, addresses, tokens, numbers of 4+ digits and quoted text replaced by #; a value from your request can appear in it if the error text contains it. Set ASKADS_TELEMETRY=0 to opt out.

Technical documentation

MCP capability catalog — task-oriented pages for every tool.
All tools and inputs
Development documentation
Publishing documentation
CrUX API documentation

Support

Found a bug or need a scenario? Create an issue or write in Telegram.

You made it to the end!

Google CrUX MCP

概览

PopNx MCP 的三大支柱

它能帮你做什么

安装

安装之前

需要你填写的值

它能做什么

基础检查i

作者与仓库一致

仍在维护

有许可证

端点有响应

使用 OAuth 登录

工具描述中没有隐藏指令

与“网页与浏览器”中的其他服务器比较i

常见问题

替代选择

Browser Use

Chrome DevTools MCP

MCP Server Browser

作者的 README

Google CrUX MCP

See it work in a minute

Contents

Quick start

What you can ask it to do

How to read CrUX data

Getting access

Configuration

Data, limits and background work

Technical documentation

Support