SEO Audit Skill

Perform comprehensive SEO audits with scored categories and actionable recommendations.

Audit Categories (each scored /10)

1. Indexing (robots.txt, sitemap, canonicals)

Check:

• robots.txt exists and is properly configured
• XML sitemap exists and is submitted to Search Console
• Canonical tags present on all pages
• No accidental noindex on important pages
• Meta robots directives are intentional
• Hreflang tags (if multilingual)

2. On-Page SEO

Check:

• Unique title tags on every page (under 60 chars)
• Meta descriptions on every page (under 160 chars)
• H1 tag — exactly one per page, includes primary keyword
• Heading hierarchy (H1 → H2 → H3, no skipping)
• Image alt text on all images
• Internal linking structure
• Keyword density (natural, not stuffed)
• URL structure (clean, descriptive, hyphenated)

3. Technical SEO

Check:

• Page load speed (Core Web Vitals targets)
• Mobile responsiveness
• HTTPS everywhere (no mixed content)
• Proper redirects (301 not 302 for permanent)
• No broken links (4xx errors)
• Clean HTML (no render-blocking resources)
• Lazy loading for images
• Minified CSS/JS

4. Schema / Structured Data

Check:

• JSON-LD format (preferred over microdata)
• Organization schema on homepage
• Article schema on blog posts
• BreadcrumbList for navigation
• FAQ schema where applicable
• LocalBusiness schema (if local business)
• Valid schema (test with Google's Rich Results Test)

5. Content Quality

Check:

• Unique, valuable content (not thin pages)
• Readability score appropriate for audience
• Target keywords present naturally
• Fresh content / regular updates
• Internal links between related content
• External links to authoritative sources
• No duplicate content across pages

6. Security Headers

Check:

• Content-Security-Policy (CSP)
• Strict-Transport-Security (HSTS)
• X-Frame-Options
• X-Content-Type-Options
• Referrer-Policy
• Permissions-Policy

Content SEO Capabilities

Beyond auditing, this skill can also:

• Keyword research guidance — identify primary/secondary keywords for a topic
• On-page optimization — optimize existing blog posts for target keywords
• Internal linking strategy — map content clusters and suggest link opportunities
• Meta tag optimization — write compelling title tags and meta descriptions
• Content gap analysis — identify topics competitors cover that you don't

Output Format

# SEO Audit: [Site Name]

**URL:** [site URL]
**Date:** [audit date]
**Overall Score:** [X/60]

| Category | Score | Status |
|----------|-------|--------|
| Indexing | X/10 | [emoji] |
| On-Page | X/10 | [emoji] |
| Technical | X/10 | [emoji] |
| Schema | X/10 | [emoji] |
| Content | X/10 | [emoji] |
| Security Headers | X/10 | [emoji] |

## Critical Issues
[numbered list — must fix]

## Warnings
[numbered list — should fix]

## Recommendations
[prioritized action items with code examples where applicable]

## What's Working Well
[positive findings to maintain]

Save audit report to _claude-output/seo-audit-[domain]-[date].md