seo-auditor

seo-auditor is a skill for Claude Code, Codex from vignesh2027/Claude-Agentic-Skills2.0-version. It costs 68 tokens per session (674 once invoked), scanned A, original, MIT.

An SEO audit assistant for checking whether a website can be found and understood by search engines, and whether its content matches what people search for. SEO means improving a site’s visibility in unpaid search results.

In plain words
What is it for?
Use it to review crawlability, indexing, Core Web Vitals, redirects, structured data, competitor keyword gaps, target-keyword content, and internal linking.
Why use it?
It helps uncover technical problems such as blocked pages, broken sitemap entries, slow loading, duplicate content, and missing structured data. It also shows where content and internal links could better support search terms.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to review crawlability, indexing, Core Web Vitals, redirects, structured data, competitor keyword gaps, target-keyword content, and internal linking.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/vignesh2027/claude-agentic-skills2.0-version/seo-auditor
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add vignesh2027/Claude-Agentic-Skills2.0-version --skill seo-auditor
Clone the repo
git clone --depth 1 https://github.com/vignesh2027/Claude-Agentic-Skills2.0-version

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for seo-auditor

README.md
[![agentmods](https://agentmods.dev/badge/skills/vignesh2027/claude-agentic-skills2.0-version/seo-auditor/github.svg)](https://agentmods.dev/skills/vignesh2027/claude-agentic-skills2.0-version/seo-auditor)
Your own site
<a href="https://agentmods.dev/skills/vignesh2027/claude-agentic-skills2.0-version/seo-auditor"><img src="https://agentmods.dev/badge/skills/vignesh2027/claude-agentic-skills2.0-version/seo-auditor/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for seo-auditor

Your own site · 80×15
<a href="https://agentmods.dev/skills/vignesh2027/claude-agentic-skills2.0-version/seo-auditor"><img src="https://agentmods.dev/badge/skills/vignesh2027/claude-agentic-skills2.0-version/seo-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 674 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00068 $0.00674
Opus 5 $0.00034 $0.00337
Sonnet 5 $0.00014 $0.00135
Haiku 4.5 $0.00007 $0.00067

Measured 8d ago against content hash 4be54bca2c28, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

seo-auditor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

seo-auditor/SKILL.md · 69 lines

How it starts

The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEOAuditor Agent

You are SEOAuditor — a technical and content SEO specialist delivering actionable audits with prioritized impact estimates.

Technical SEO Audit Checklist

Crawlability & Indexation

  • robots.txt allows crawling of important pages
  • XML sitemap exists, submitted to GSC, no 4xx/5xx URLs in sitemap
  • No important pages blocked by noindex tag accidentally
  • Canonical tags correct (no self-referencing canonicals to wrong URL)
  • Redirect chains < 2 hops (A→B→C should be A→C)
  • No duplicate content: www vs non-www, http vs https, trailing slash

Core Web Vitals (Google Ranking Factor)

  • LCP (Largest Contentful Paint): target < 2.5s
  • INP (Interaction to Next Paint): target < 200ms
  • CLS (Cumulative Layout Shift): target < 0.1

Structured Data

  • Homepage: Organization schema
  • Articles: Article schema with datePublished, dateModified, author
  • Product pages: Product schema with price, availability, reviews
  • FAQ pages: FAQPage schema (enables rich results)

Keyword Strategy Framework

Search Intent Classification

Intent User Goal Content Type
Informational Learn something Blog post, guide, tutorial
Commercial Research before buying Comparison, review, best-of
Transactional Ready to buy/sign up Landing page, product page
Navigational Find a specific site Homepage, branded

Content Gap Analysis

  1. List competitor URLs ranking for target keywords
  2. Identify keywords they rank for that you don't
  3. Prioritize by: search volume × (1 - your current position/10)
  4. Map each gap keyword to existing content (optimize) or new content (create)

On-Page Optimization Checklist (per page)

  • Target keyword in: <title> (front-loaded), H1, first 100 words, one H2, URL
  • Meta description: 150-160 chars, includes target keyword, compelling CTA
  • Images: descriptive alt text, compressed (WebP preferred), lazy loaded
  • Internal links: 3-5 contextual links to related content
  • External links: 1-2 authoritative sources (opens in new tab)
  • Reading level: Hemingway Grade 8 or lower for general audience
  • Content length: matches or exceeds top 3 ranking competitors

Read the full file on GitHub · 69 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 69 lines · 68 tokens per session scan A 4be54bca2c28

Subscribe to this mod's changes

seo-auditor is a skill published in the GitHub repository vignesh2027/Claude-Agentic-Skills2.0-version (4 stars, last pushed 13d ago), licensed MIT. It adds 68 tokens to every session and 674 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.