seo-audit

seo-audit is a skill for Claude Code, Codex from shadcn-labs/agentcn. It costs 43 tokens per session (652 once invoked), scanned A, original, MIT.

A guide for presenting a fixed, automated review of how well a web page can be read and cited by AI answer tools such as ChatGPT, Claude, and Perplexity. It explains the returned score, categories, checks, evidence, and recommended fixes.

In plain words
What is it for?
Use it when reporting an auditpage result, including its overall score, page statistics, category results, failed checks, priorities, diagnostics, and ready-to-use fix prompts.
Why use it?
It prevents the audit results from being re-scored or explained inconsistently. It helps turn technical checks into a clear report about what needs improvement.

Skill for Claude CodeCodex

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

Good fit Use it when reporting an auditpage result, including its overall score, page statistics, category results, failed checks, priorities, diagnostics, and ready-to-use fix prompts.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/shadcn-labs/agentcn/seo-audit
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 shadcn-labs/agentcn --skill seo-audit
Clone the repo
git clone --depth 1 https://github.com/shadcn-labs/agentcn

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-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/shadcn-labs/agentcn/seo-audit/github.svg)](https://agentmods.dev/skills/shadcn-labs/agentcn/seo-audit)
Your own site
<a href="https://agentmods.dev/skills/shadcn-labs/agentcn/seo-audit"><img src="https://agentmods.dev/badge/skills/shadcn-labs/agentcn/seo-audit/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-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/shadcn-labs/agentcn/seo-audit"><img src="https://agentmods.dev/badge/skills/shadcn-labs/agentcn/seo-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 652 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00043 $0.00652
Opus 5 $0.00022 $0.00326
Sonnet 5 $0.00009 $0.00130
Haiku 4.5 $0.00004 $0.00065

Measured 10d ago against content hash a558c99fdbd8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

seo-audit 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 10d 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.

registry/eve/ai-seo-audit/agent/skills/seo-audit/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

What this measures

How well a page can be crawled, chunked, understood, and cited by AI answer engines — not classic blue-link SEO. The audit_page tool computes this deterministically: page data flows through context.dev, then a fixed rubric of ~30 checks scores six categories into a 0–100 total. Your job is to present that result, not to re-score it.

The result shape

audit_page returns JSON with:

  • score (0–100) and band ({ label, interpretation }).
  • stats — words, headings, links, externalLinks, jsonLdBlocks, char counts.
  • categories[] — each { id, name, score, maxScore, naExcluded, items[] }.
  • categories[].items[] — each check: { id, label, status, evidence, recommendation, score, maxScore }. status is pass | partial | fail | na.
  • topPriorities[] — the highest-impact failing/partial checks, pre-sorted.
  • agentPrompts{ full, topIssues[] }, ready-to-run fix prompts.
  • diagnostics — context.dev fetch status and JSON-LD parse failures.

The six categories

ID Category Max
A Technical AI Crawlability 28.4
B Content Structure & Chunking 25.4
C Structured Data / Schema 13.4
D E-E-A-T & Entity Authority 21.4
E Off-site / Citation Surface Presence 8.4
F Measurement & Governance 3

Scoring (already applied by the tool): pass = full weight, partial = half, fail = 0, na = excluded from the denominator. Bands: Critical ≤40 · Below average ≤55 · Average ≤70 · Strong ≤85 · Excellent >85.

Output

Report, in order:

  1. The overall score/100, its band.label, and the band.interpretation.
  2. A per-category breakdown: for each category, score/maxScore and the pass/partial/fail counts.
  3. The failing and partial checks, highest-impact first — use topPriorities and the matching items (cite each check's id, evidence, and recommendation).
  4. The agent-ready fix prompt: present agentPrompts.full verbatim in a copy-paste block.

Read the full file on GitHub · 57 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. 10d ago First seen · 57 lines · 43 tokens per session scan A a558c99fdbd8

Subscribe to this mod's changes

seo-audit is a skill published in the GitHub repository shadcn-labs/agentcn (458 stars, last pushed 17d ago), licensed MIT. It adds 43 tokens to every session and 652 once invoked, about $0.0002 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 2026-08-30.

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