AI Agent Skills for SEO auditing , 11 SKILL.md files that teach Cursor, Claude Code, Copilot & more to perform comprehensive SEO audits. Zero dependencies.
SaferSkills independently audited nextjs-seo-audit (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
Findings & checks · 0 flagged
Every scanned point with the score it earned and what moved between them.
First recorded scan — no prior version to compare against.
The primary manifest — the file an agent reads to learn what this artifact does.
A comprehensive SEO audit skill that teaches you how to analyse HTML pages and provide actionable recommendations across 10 skill areas.
Use this skill when the user asks you to:
When performing a full SEO audit, run all 10 sub-skills in order on the provided HTML. Read each sub-skill's SKILL.md for the detailed checklist:
| # | Skill | SKILL.md | Focus area |
|---|---|---|---|
| 1 | On-Page Optimization | skills/onpage-optimization/SKILL.md | Headings, keywords, internal links |
| 2 | Schema JSON Optimization | skills/schema-json-optimization/SKILL.md | JSON-LD structured data |
| 3 | Meta Data Optimization | skills/meta-data-optimization/SKILL.md | Title, description, OG, Twitter Cards |
| 4 | Semantic Layout | skills/semantic-layout/SKILL.md | HTML5 semantic elements, accessibility |
| 5 | Site Speed Optimization | skills/site-speed-optimization/SKILL.md | Scripts, stylesheets, images |
| 6 | Mobile Optimization | skills/mobile-optimization/SKILL.md | Viewport, responsive design, touch targets |
| 7 | Backlink Monitoring | skills/backlink-monitoring/SKILL.md | External links, dofollow/nofollow strategy |
| 8 | International SEO | skills/international-seo/SKILL.md | Hreflang, multi-language, regional targeting |
| 9 | Technical SEO | skills/technical-seo/SKILL.md | Sitemap, robots.txt, canonical, crawlability |
| 10 | Core Web Vitals | skills/core-web-vitals/SKILL.md | LCP, CLS, INP, performance scoring |
For each check, report:
✅ PASS, ⚠️ WARN, or ❌ FAILAt the end, provide a summary:
SEO Audit Summary
─────────────────
✅ Pass: X
⚠️ Warn: Y
❌ Fail: Z
──────────────
Score: XX%These thresholds are used across all sub-skills:
| Parameter | Value |
|---|---|
| Title length | 30–60 characters |
| Meta description length | 120–160 characters |
| Keyword density (ideal) | 1.0–3.0% |
| Internal links (min per page) | 3 |
| Max fixed-width before warning | 500px |
| Min touch target size | 48px × 48px |
| Max inline CSS length | 5000 characters |
| Max external scripts | 10 |
| Required OG tags | og:title, og:description, og:image, og:url, og:type |
| Required Twitter Card tags | twitter:card, twitter:title, twitter:description |
| Required semantic elements | header, main, footer, nav |
| Recommended semantic elements | article, section, aside, figure |
~30 seconds. Free. No account. Every finding cites a rule and a line of evidence.