Core Web Vitals history (CrUX)
get_core_web_vitalsRead-only
Chrome UX Report field data for a property (or a single page): the weekly history of Core Web Vitals (LCP, INP, CLS) plus FCP and TTFB, each with its p75 value, good/needs-improvement/poor rating, and the good-bucket density trend. Also reports any week-over-week rating regressions. Where Chrome detected ads, adMetrics adds its four experimental ad metrics (ad count, ad density, ad CPU, ad network weight) as a p75 trend each. These have no thresholds and no rating, and are absent for sites with no ads. Needs a Chrome UX Report API key configured in the app; returns notConfigured otherwise, or noData when CrUX has too little real-world traffic for the target.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| url | No | Optional single page URL to measure instead of the whole origin. | |
| siteUrl | Yes | ||
| formFactor | No | Device class: ALL (default), PHONE, DESKTOP, or TABLET. | ALL |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| hint | No | ||
| noData | No | ||
| target | No | ||
| docsUrl | No | ||
| message | No | ||
| metrics | No | ||
| periods | No | ||
| siteUrl | No | ||
| adMetrics | No | ||
| keySource | No | ||
| formFactor | No | ||
| periodCount | No | ||
| regressions | No | ||
| latestPeriod | No | ||
| periodLabels | No | ||
| notConfigured | No |