git:20260512.df85811 to git:20260729.3b91eed

5 added, 1 removed. Audit A to A.

---

name: seo-technical

- description: Use when auditing technical SEO. Covers robots.txt, sitemap.xml, Core Web Vitals (LCP/INP/CLS), mobile-first indexing, crawlability, indexability, HTTPS, redirects chains.

+ description: Use when auditing technical SEO — robots.txt, sitemap.xml, Core Web Vitals, crawlability, indexability.

user-invocable: false

related-skills: seo, seo-sitemap, seo-redirects, seo-hreflang

---

+ <objective>

+ Runs a technical SEO audit: fetches and validates robots.txt (`scripts/parse-robots.ts`) and sitemap.xml (`scripts/parse-sitemap.ts`), measures Core Web Vitals via a local Lighthouse wrapper (`scripts/check-cwv.ts` — LCP <2.5s, INP <200ms, CLS <0.1), verifies mobile-first signals, and checks HTTPS/HSTS/redirect chains plus indexability (robots.txt not blocking critical paths, no stray `noindex`, canonical pointing to an indexable URL, no `nofollow` on internal navigation). Does not cover content quality (seo-content), schema (seo-schema), or local-specific signals (seo-local).

+ </objective>

# Technical SEO

## Workflow

1. Fetch `/robots.txt` → `scripts/parse-robots.ts`

2. Fetch `/sitemap.xml` → `scripts/parse-sitemap.ts`

3. Run Lighthouse locally → `scripts/check-cwv.ts <url>`

4. Verify mobile-first signals (viewport, responsive images)

5. Check HTTPS, HSTS, redirects chains

## Core Web Vitals (2026)

- **LCP**: < 2.5s

- **INP**: < 200ms (replaced FID March 2024)

- **CLS**: < 0.1

## Indexability Checks

- `robots.txt` doesn't block critical paths

- `<meta name="robots">` not `noindex` on important pages

- Canonical points to indexable URL

- No `nofollow` on internal navigation

## References

- `skills/seo/05-technical-seo/` (core-web-vitals, crawlability, mobile-first, structured-data-testing)