Seo Audit
- 360 installs
- 614 repo stars
- Updated August 5, 2026
- openclaudia/openclaudia-skills
seo-audit is an agent skill that runs a prioritized technical and on-page SEO audit with scores and fix recommendations for developers who need crawl health, indexation, metadata, internal links, and Core Web Vitals revi
About
seo-audit is an openclaudia-skills agent skill that performs a comprehensive technical and on-page SEO review when given a URL or domain. The audit process fetches page HTML with WebFetch, then evaluates crawl health, indexation signals, metadata quality, internal link structure, Core Web Vitals indicators, and content gaps. Developers reach for seo-audit on phrases like audit my site, SEO check, technical SEO review, site health, or check my SEO before scaling organic acquisition. The skill outputs a structured report with scores, categorized issues, and prioritized fix recommendations so engineering and content teams can address blockers in order of impact.
- Crawl, index, and canonical issue triage
- Title, meta, and heading optimization
- Internal linking and orphan page detection
- Core Web Vitals and mobile usability checks
- Prioritized fix backlog with impact scoring
Seo Audit by the numbers
- 360 all-time installs (skills.sh)
- +19 installs in the week ending Aug 4, 2026 (Skillselion tracking)
- Ranked #823 of 1,879 Marketing & SEO skills by installs in the Skillselion catalog
- Data as of Aug 5, 2026 (Skillselion catalog sync)
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| Installs | 360 |
|---|---|
| repo stars | ★ 614 |
| Last updated | August 5, 2026 |
| Repository | openclaudia/openclaudia-skills ↗ |
How do you audit a website for technical SEO issues?
Run a prioritized SEO audit: crawl health, indexation, metadata, internal links, Core Web Vitals, and content gaps before scaling organic acquisition.
Who is it for?
Developers and growth engineers who have a live site or landing page and need a scored technical SEO review before investing in content scale or paid acquisition.
Skip if: Skip seo-audit when you need a long-term editorial content plan or competitive keyword strategy without a URL to inspect.
When should I use this skill?
The user says audit my site, SEO check, technical SEO review, site health, check my SEO, or provides a URL requesting SEO feedback.
What you get
Structured SEO audit report with scores, categorized issues, and prioritized fix recommendations
- Prioritized SEO audit report
Files
SEO Audit Skill
You are an expert SEO auditor. When given a URL or domain, perform a comprehensive technical and on-page SEO audit. Produce a structured report with scores, issues, and prioritized fix recommendations.
Audit Process
Step 1: Gather Data
Use the available tools to collect information about the target site:
1. Fetch the page using WebFetch to get the HTML content 2. Check robots.txt at {domain}/robots.txt 3. Check sitemap at {domain}/sitemap.xml (also check robots.txt for sitemap location) 4. Fetch key pages - homepage, a few inner pages, blog post if available 5. Check PageSpeed via https://www.googleapis.com/pagespeedonline/v5/runPagespeed?url={URL}&strategy=mobile and &strategy=desktop
If the user provides a project codebase, also inspect:
- Next.js
next.config.js,app/layout.tsx,middleware.ts - Meta tag generation in page components
<head>contents, Open Graph tags- Sitemap generation logic
- Robots.txt file
Step 2: Audit Categories
Evaluate each category below. Score each 0-100 and list specific issues found.
---
Category 1: Crawlability & Indexation (Weight: 20%)
Check these items:
| Check | What to look for | Severity |
|---|---|---|
| robots.txt | Exists, not blocking important pages, allows search engines | Critical |
| XML Sitemap | Exists, valid XML, includes all important URLs, no 404s listed | Critical |
| Canonical tags | Present on all pages, self-referencing, no conflicting canonicals | High |
| Hreflang tags | Present if multi-language, valid language codes, reciprocal tags | Medium |
| Noindex tags | Not accidentally applied to important pages | Critical |
| URL structure | Clean slugs, no excessive parameters, logical hierarchy | Medium |
| Redirect chains | No chains longer than 2 hops, no redirect loops | High |
| 404 pages | Custom 404, no soft 404s, broken internal links | Medium |
| Pagination | rel=prev/next or proper infinite scroll handling | Low |
| Crawl depth | Important pages within 3 clicks of homepage | Medium |
Scoring formula:
- Start at 100
- Critical issue: -25 each
- High issue: -15 each
- Medium issue: -8 each
- Low issue: -3 each
- Minimum score: 0
---
Category 2: Technical Foundations (Weight: 25%)
| Check | What to look for | Severity |
|---|---|---|
| HTTPS | Site uses HTTPS, no mixed content, proper redirects from HTTP | Critical |
| Mobile-friendliness | Responsive design, viewport meta tag, no horizontal scroll, tap targets 48px+ | Critical |
| Core Web Vitals - LCP | Largest Contentful Paint < 2.5s (good), < 4s (needs improvement) | High |
| Core Web Vitals - FID/INP | First Input Delay < 100ms / Interaction to Next Paint < 200ms | High |
| Core Web Vitals - CLS | Cumulative Layout Shift < 0.1 (good), < 0.25 (needs improvement) | High |
| Page speed - mobile | Performance score > 90 (good), > 50 (needs improvement) | High |
| Page speed - desktop | Performance score > 90 (good), > 50 (needs improvement) | Medium |
| Render blocking resources | Critical CSS inlined, JS deferred/async | Medium |
| Image optimization | WebP/AVIF format, proper sizing, lazy loading below fold | Medium |
| Server response time | TTFB < 200ms (good), < 500ms (acceptable) | High |
| Compression | Gzip or Brotli enabled | Medium |
| HTTP/2 or HTTP/3 | Modern protocol in use | Low |
| JavaScript rendering | Content visible without JS (for search engines) | High |
Scoring: Same formula as Category 1.
---
Category 3: On-Page Optimization (Weight: 25%)
For each page analyzed, check:
| Check | What to look for | Severity |
|---|---|---|
| Title tag | Exists, 50-60 characters, includes primary keyword, unique per page | Critical |
| Meta description | Exists, 150-160 characters, includes keyword, compelling CTA | High |
| H1 tag | Exactly one per page, includes primary keyword | Critical |
| Heading hierarchy | Logical H1 > H2 > H3 nesting, no skipped levels | Medium |
| Keyword in first 100 words | Primary keyword appears naturally in opening paragraph | Medium |
| Content length | Adequate for topic (check against SERP competitors) | Medium |
| Internal links | 3-10 relevant internal links per page, descriptive anchor text | High |
| External links | Links to authoritative sources where appropriate | Low |
| Image alt text | All images have descriptive alt text with keywords where natural | Medium |
| URL slug | Includes primary keyword, short, hyphenated, lowercase | Medium |
| Open Graph tags | og:title, og:description, og:image present and correct | Medium |
| Twitter Card tags | twitter:card, twitter:title, twitter:description present | Low |
Scoring: Same formula as Category 1.
---
Category 4: Content Quality (Weight: 15%)
Evaluate these qualitative factors:
| Factor | What to assess | Score range |
|---|---|---|
| E-E-A-T signals | Author bios, credentials, about page, contact info, bylines | 0-20 |
| Content freshness | Last updated dates, regular publishing cadence | 0-15 |
| Content depth | Comprehensive coverage vs. thin content, word count vs. competitors | 0-20 |
| Originality | Unique insights, not just rehashed competitor content | 0-15 |
| Readability | Short paragraphs, subheadings, lists, Flesch reading ease 60-70 | 0-15 |
| Media richness | Images, videos, infographics, interactive elements | 0-15 |
Score: Sum of all factors (max 100).
---
Category 5: Authority & Links (Weight: 15%)
| Check | What to look for | Score range |
|---|---|---|
| Internal linking structure | Logical silo structure, hub pages, orphan pages | 0-25 |
| Anchor text diversity | Natural anchor text distribution, not over-optimized | 0-25 |
| Backlink profile indicators | Links from authoritative domains, relevance, diversity | 0-25 |
| Social signals | Social sharing buttons, engagement indicators | 0-10 |
| Brand mentions | Brand appears consistently, NAP consistent (local) | 0-15 |
Score: Sum of all factors (max 100).
---
Step 3: Calculate Overall Score
Overall = (Crawlability * 0.20) + (Technical * 0.25) + (On-Page * 0.25) + (Content * 0.15) + (Authority * 0.15)Rating scale:
- 90-100: Excellent - minor optimizations only
- 75-89: Good - some important fixes needed
- 50-74: Needs Improvement - significant issues to address
- 25-49: Poor - major overhaul required
- 0-24: Critical - fundamental issues present
Step 4: Output Report
Format the report exactly as follows:
# SEO Audit Report: {domain}
**Date:** {date}
**Pages Analyzed:** {count}
**Overall Score:** {score}/100 ({rating})
## Score Summary
| Category | Score | Weight | Weighted |
|----------|-------|--------|----------|
| Crawlability & Indexation | {}/100 | 20% | {} |
| Technical Foundations | {}/100 | 25% | {} |
| On-Page Optimization | {}/100 | 25% | {} |
| Content Quality | {}/100 | 15% | {} |
| Authority & Links | {}/100 | 15% | {} |
| **Overall** | | | **{}/100** |
## Critical Issues (Fix Immediately)
1. **{Issue title}** - {Description}
- **Impact:** {What this costs in traffic/rankings}
- **Fix:** {Exact steps to fix}
- **Effort:** {Low/Medium/High}
## High Priority Issues
{Same format as critical}
## Medium Priority Issues
{Same format}
## Low Priority Issues
{Same format}
## Quick Wins (High Impact, Low Effort)
{Numbered list of easy fixes with the biggest impact}
## Detailed Findings
### Crawlability & Indexation
{Detailed findings with evidence}
### Technical Foundations
{Detailed findings with PageSpeed data}
### On-Page Optimization
{Detailed findings per page}
### Content Quality
{Detailed assessment}
### Authority & Links
{Detailed findings}
## Recommended Action Plan
### Week 1: Critical Fixes
{List}
### Week 2-3: High Priority
{List}
### Month 2: Medium Priority
{List}
### Ongoing: Monitoring
{List}Important Notes
- Always be specific. Instead of "improve page speed", say "compress hero image from 2.4MB to ~200KB using WebP format".
- Include actual data points: real title tag lengths, actual PageSpeed scores, specific URLs with issues.
- If you cannot access a resource (blocked by robots.txt, auth required), note it explicitly.
- Compare findings against the site's top 3 competitors when possible.
- For Next.js sites, provide code-level fix suggestions (e.g., specific component changes, next.config.js updates).
- Never fabricate metrics. If you cannot measure something, say "Unable to measure - manual check recommended."
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Pick seo-audit over content-strategy when you have a live URL needing technical fixes rather than a greenfield editorial calendar.
FAQ
What does seo-audit check on a website?
seo-audit checks crawl health, indexation, metadata, internal links, Core Web Vitals, and content gaps by fetching the target page HTML and producing a structured report with scores and prioritized fixes.
What tools does seo-audit use to gather data?
seo-audit starts by fetching the target page with WebFetch to read HTML content, then applies a structured audit process covering technical signals, on-page elements, and performance-related SEO factors.