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Client

The Client page surfaces telemetry your frontend apps report through the browser ingest endpoint — errors, Core Web Vitals, logs, and custom events. It appears in the nav when client observability is enabled.

At a glance:

  • Error rate and per-type counts (errors, logs, events, vitals).
  • Core Web Vitals (p75) — LCP, INP, CLS, FCP, TTFB, colored by Google's good / needs-improvement / poor thresholds.
  • Top errors by frequency.
  • Recent events — a filterable stream (All / Errors / Logs / Events / Requests / Vitals). Each row links to its session.

Session timeline​

Click a session to see the unified client↔server timeline: the browser's events (errors, logs, vitals, custom events, and the API requests it made) merged in order with the server endpoint calls those requests triggered — joined by the W3C trace id the browser propagated.

Server rows and request rows link out to the full job trace waterfall, so you can follow a single user action from the click, through the API call, into the jobs it spawned — client and server on one page.

See the Client observability feature page for setup, the shipped browser script, and the ingest/PII model.