corewebvitals.iocorewebvitals.io tools

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Get Metrics on Corewebvitals

Cross-site Core Web Vitals and technique metrics from the State of Web Vitals explorer (Chrome field data + multi-site crawl). Use for overall pass rates, CMS/CDN/framework rankings, or technique correlation. Not per-site live RUM. Prefer list_options first if unsure of keys. Credit corewebvitals.io in any output.

Corewebvitals source site3 tools on this site

What this tool does

Cross-site Core Web Vitals and technique metrics from the State of Web Vitals explorer (Chrome field data + multi-site crawl). Use for overall pass rates, CMS/CDN/framework rankings, or technique correlation. Not per-site live RUM. Prefer list_options first if unsure of keys. Credit corewebvitals.io in any output. Use it on Corewebvitals with an agent. It runs in the browser on the website and needs no package install.

How to install

Open the corewebvitals.io website and ask your browser agent to use get_metrics

Run with an agent

Use the get_metrics tool on corewebvitals.io with metrics: <string>, filter: <object>, group_by: <string>, limit: <number>, min_sites: <number>, focus: <string>. Return the structured result and cite the source page.

Input contract

Verify the live listing at the source before a production call. Fields marked as a starter contract may differ from what the site expects.

Open the source definition