Skip to main content
Nerve Centre KPIs · Audit Profile · Sentiment Settings A Cloudflare-fronted origin lives or dies on front-end performance - the part that moves ranking and conversion. This audit answers four questions: (1) is the site passing Core Web Vitals for real mobile users, (2) did the last deploy regress Lighthouse scores or page weight, (3) is the edge / cache config actually helping (TTFB, render-blocking, total weight), and (4) when top-traffic pages are slow, how much SEO + revenue is exposed on the linked commerce sibling?

​
What this audit checks

​
Authentication & access

  • API token valid + scoped (auth on /user/tokens/verify)
  • Token grants Zone:Read + Zone.Analytics:Read for the configured zone
  • Zone ID resolves to an active (not paused / deactivated) zone
  • Origin URL reachable and returns a CrUX field record (origin has enough traffic)

​
Core Web Vitals (field - the rank + conversion gate)

  • Mobile CWV pass rate < 50% (conversion + SEO emergency)
  • Mobile LCP p75 > 4000ms (loading-speed gate failing)
  • Mobile INP p75 > 500ms (responsiveness gate failing)
  • Mobile CLS p75 > 0.25 (visual-stability gate failing)
  • Mobile TTFB p75 > 1800ms (origin / edge response too slow)

​
Lighthouse lab scores (deploy-regression signal)

  • Mobile performance score < 50 (poor) - flag vs prior 30D
  • Desktop performance score < 50 (poor)
  • Accessibility score < 70 (a11y + SEO + legal exposure)
  • Best-practices score < 70 (HTTPS / console errors / deprecated APIs)
  • SEO score < 70 (crawlability / meta / structured-data basics)

​
Page weight & edge efficiency

  • Total page weight > 3MB (creeping weight behind the CDN)
  • Render-blocking resources > 500ms estimated savings (edge / Workers fix)
  • Total blocking time > 600ms (interactivity proxy failing)
  • Speed Index > 5800ms (slow visual completeness)

​
Cross-channel: revenue-at-risk from slow pages (the killer area)

  • Top-traffic page (sibling = google_search_console) failing CWV on this origin = compute ranking + click exposure
  • Slow product / collection page (sibling = shopify / bigcommerce / adobe_commerce) where LCP > 4s - quantify conversion lift from a fix
  • Origin CWV pass rate < 50% while google_analytics bounce rate trends up on the same hostname
  • Lighthouse performance regression coincident with a sibling deploy / theme publish window

​
Severity thresholds

SignalWarnCritical
cwv_pass_rate_pct7550
lcp_p75_ms25004000
inp_p75_ms200500
cls_p750.10.25
ttfb_p75_ms8001800
lighthouse_perf_score9050
lighthouse_a11y_score9070
lighthouse_seo_score9070
total_page_weight_bytes15728643145728
total_blocking_time_ms200600
render_blocking_ms200500
speed_index_ms34005800

​
Data sources

  • GET https://api.cloudflare.com/client/v4/user/tokens/verify - Token sanity + scope check
  • GET https://api.cloudflare.com/client/v4/zones/{zone_id} - Zone status + plan + paused/dev-mode flags
  • GET https://api.cloudflare.com/client/v4/zones/{zone_id}/analytics/dashboard - Edge traffic + cache analytics context
  • GET https://pagespeedonline.googleapis.com/pagespeedonline/v5/runPagespeed - Lighthouse lab scores + CrUX field CWV for the origin (mobile + desktop)