Core Web Vitals Budget Guard

Your Lighthouse score was 94. You merged a PR. It's now 71. Google starts demoting your pages.

This skill enforces a CWV budget — run it in CI, get a specific diagnosis when a metric regresses, and fix it before it ships.

Runs Lighthouse locally via npx. No cloud account. Works with any framework.

Trigger Phrases

• "core web vitals", "web vitals check", "cwv audit"
• "LCP slow", "CLS regression", "INP too high"
• "Lighthouse score dropped", "performance budget"
• "which file is slowing down my LCP"
• "web vitals CI", "performance regression"
• "/cwv-check"