URL-in, audit-out
One POST with a URL. No Site / Page / Device setup first. Batch up to 150 URLs per request.
Trigger audits, get JSON back, store history. Real Chrome via Playwright, three regions, signed webhooks when each snapshot finishes.
curl -X POST https://api.webvitals.sh/v1/audits \
-H "Authorization: Bearer $WEBVITALS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"url": "https://example.com/pricing",
"device": "mobile",
"network": "4g",
"region": "europe-west2"
}' One POST with a URL. No Site / Page / Device setup first. Batch up to 150 URLs per request.
us-central1, europe-west2, asia-northeast1. Pick one or fan out.
Full Lighthouse JSON in object storage, presigned on read. Retention follows your plan.
HMAC-signed callbacks when an audit finishes. Timestamped, replay-safe.
Daily or hourly per page. Same runner fleet; same flat response shape.
Live at /v1/openapi.json. Generate clients however you want.
If LCP, CLS, and TBT mean something to you, you don't
need a feature tour. Web Vitals is Lighthouse as structured data — behind an API, in three
regions, with retention and webhooks. Use it for CI gates, alerting, customer dashboards,
or however your stack wants to consume perf numbers.