Run the PageSpeed performance audit — 80/20 analysis of Core Web Vitals using the PageSpeed Insights API.
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See how to installReview the instructions the agent will receive before you install.
Audit URL: $ARGUMENTS
Invoke pagespeed-perf skill.
Read PAGESPEED_API_KEY from the environment. Compute the output filename:
{YYYY-MM-DD}_pagespeed-{hostname}-claude.md.
Log whether the API key was found. Proceed regardless — lab data is available without a key, but CrUX field data requires it.
Call the PageSpeed Insights API for the URL provided above.
both (mobile + desktop) unless the user specified otherwise.Extract from the PSI response:
From the HTML source:
<link rel="preload|preconnect|prefetch">)fetchpriority, format, dimensionsfont-display, preloaded subsets<head> (no async/defer)Score each identified optimization using the 80/20 matrix:
Score = Impact × Ease (each 1–5, max 25).
Order findings by descending score. Mark optimizations with Score ≥ 20 as Critical 20%.
Write the full performance report to
{YYYY-MM-DD}_pagespeed-{hostname}-claude.md in the current directory.
Required sections:
End every report with:
---
*Informe generado el {YYYY-MM-DD} · Herramienta: Claude Code + pagespeed-perf skill*
*API Key usada: {Sí / No} · Datos CrUX: {Disponibles / No disponibles}*
PAGESPEED_API_KEY — Optional but strongly recommended.
Set in your shell:
$env:PAGESPEED_API_KEY = "your-api-key" # Windows PowerShell
export PAGESPEED_API_KEY="your-api-key" # macOS / Linux
Get a free key: https://developers.google.com/speed/docs/insights/v5/get-started
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