# seo-audit

Audits a site’s technical SEO and page content, then reports scores and issues. Use it to investigate indexing, performance, and on-page problems.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 477 installs · ★ 721
- Author: OpenClaudia
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/OpenClaudia/openclaudia-skills/tree/HEAD/skills/seo-audit/SKILL.md
- Updated: 2026-10-21
- HTML: https://affpapa.org/en/nevibecode/skills/openclaudia-seo-audit

## What it does

The skill checks `robots.txt`, sitemaps, canonical tags, redirects, and whether key pages can be crawled. It uses PageSpeed Insights to assess mobile and desktop performance. Its checks also cover HTTPS, Core Web Vitals, metadata, headings, images, and internal links.

The audit groups findings into crawlability, technical foundations, on-page optimization, content quality, and links. It scores each category based on issue severity, then combines the results using category weights. When given a project codebase, it can inspect Next.js configuration and the generation of metadata, sitemaps, and `robots.txt`.

PageSpeed Insights access is needed for its speed checks, so a service outage limits that part of the assessment. The skill reports issues and suggested fixes; it does not automatically repair the site.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill seo-audit -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/seo-audit/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/seo-audit/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill seo-audit -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/seo-audit/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill seo-audit -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/seo-audit/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install OpenClaudia/openclaudia-skills seo-audit
```

2. **Manually: put the files in place**
- File: `.github/skills/seo-audit/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill seo-audit -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/OpenClaudia/openclaudia-skills --path skills/seo-audit
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/seo-audit/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add OpenClaudia/openclaudia-skills --skill seo-audit -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/OpenClaudia/openclaudia-skills/tree/HEAD/skills/seo-audit/SKILL.md

## When to use it
- find pages blocked from indexing
- check sitemap entries and redirect chains
- assess Core Web Vitals and page speed
- spot missing or conflicting page metadata
- review content quality and internal links

## Example prompts
- Audit this site’s SEO and rank the issues by severity.
- Check the technical SEO and page speed of the homepage.
- Review the SEO setup in this Next.js project and prepare a report.

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 198919d863af2c53.

BEGIN THIRD-PARTY FILE 198919d863af2c53
```text
---
name: seo-audit
description: Run a full technical and on-page SEO audit on any website or page. Use when the user says "audit my site", "SEO check", "technical SEO review", "site health", "check my SEO", "what's wrong with my site", or provides a URL and asks for SEO feedback.
---

# 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 |
```
END THIRD-PARTY FILE 198919d863af2c53

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