# Google CrUX MCP

> Google CrUX MCP — a1-x-tech-mcp-google-crux. Use this tool when you need to analyze and compare website performance metrics, such as Core Web Vitals, across different form factors and time periods. It solves problems related to optimizing user experience, identifying performance trends, and benchmarking pages against site averages. The tool takes natural language queries as input and outputs detailed performance data and trends, making it ideal for web developers and performance optimization tasks.

Canonical page: https://skillsregistry.net/skills/a1-x-tech-mcp-google-crux  
JSON: https://api.skillsregistry.net/v1/skills/a1-x-tech-mcp-google-crux

## Description

Enables natural language queries of the Chrome UX Report API to fetch Core Web Vitals (LCP, INP, CLS, FCP, TTFB), compare form factors, benchmark pages against site averages, and analyze up to 40 weeks of performance trends.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-08-29

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** api-integration
- **Updated:** 2026-08-29

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/gnahfoi3yp)
- **Repository:** <https://github.com/A1-x-Tech/mcp-google-crux>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "a1-x-tech-mcp-google-crux"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/a1-x-tech-mcp-google-crux` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/a1-x-tech-mcp-google-crux/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt