# Chrome UX Report (CrUX) API

Category: [SEO and site checks](https://free-web-services.com/web-services/web-development/seo/)  
Page: https://free-web-services.com/web-services/web-development/seo/chrome-ux-report-crux-api.html  
Documentation: https://developer.chrome.com/docs/crux/api

The Chrome UX Report API returns real-user speed data from Chrome for a page or a whole origin: Core Web Vitals such as LCP, INP and CLS as histograms and percentiles. Use it to watch how fast a site really is for visitors. Send a POST request with a JSON body naming the origin or URL and optionally the device type; data is a 28-day rolling average updated daily. Free with a free Google Cloud API key, 150 queries per minute.

- API key: Needed, free
- Pricing: Free with a free Google Cloud API key, 150 queries per minute.
- Formats: JSON
- Interface: REST
- Provider: developer.chrome.com
- Last checked: Working on November 1st, 2026

Example request:

```sh
curl -X POST 'https://chromeuxreport.googleapis.com/v1/records:queryRecord?key=YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"origin": "https://www.wikipedia.org"}'
```

Replace YOUR_API_KEY with your own key.