seo-audit

seo-audit is a skill for Claude Code, Codex from dalroot/agentic-seo. It costs 83 tokens per session (993 once invoked), scanned A, original, MIT.

When the user wants to run an SEO audit, technical SEO audit, or site health check. Also use when the user mentions "SEO audit," "technical audit," "site audit," "crawl audit," "indexing audit," "SEO health," or "fix SEO issues." For prioritization and organic strategy, use seo-strategy. For GSC data analysis, use…

Skill for Claude CodeCodex

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

Install with agentmods
npx agentmods add skills/dalroot/agentic-seo/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 dalroot/agentic-seo --skill seo-audit
Clone the repo
git clone --depth 1 https://github.com/dalroot/agentic-seo

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/dalroot/agentic-seo/seo-audit/github.svg)](https://agentmods.dev/skills/dalroot/agentic-seo/seo-audit)
Your own site
<a href="https://agentmods.dev/skills/dalroot/agentic-seo/seo-audit"><img src="https://agentmods.dev/badge/skills/dalroot/agentic-seo/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/dalroot/agentic-seo/seo-audit"><img src="https://agentmods.dev/badge/skills/dalroot/agentic-seo/seo-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 993 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 unknown 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 $0.00083 $0.00993
Opus 5.5 $0.00033 $0.00397
Sonnet 5.5 $0.00017 $0.00199
Haiku 4.5 $0.00008 $0.00099

Measured today against content hash ede84725f97a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 today.

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.

skills/strategies/structure/seo-audit/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Strategies: SEO Audit

Guides end-to-end SEO audit: technical foundation, on-page, content, and off-page. Execute in order—technical blockers prevent indexing; on-page limits rankings; content and off-page build authority. Use when auditing an existing site or planning fixes.

When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Audit Order

Phase Focus Skills
1. Technical Crawl, index, sitemap robots-txt, xml-sitemap, canonical-tag, indexing, site-crawlability
2. On-Page Metadata, structure, schema title-tag, meta-description, page-metadata, schema-markup, internal-links, heading-structure
3. Content Gaps, intent, optimization keyword-research, content-strategy, content-optimization
4. Off-Page Backlinks, authority link-building, backlink-analysis

Principle: Fix foundation before optimizing pages. See seo-strategy for workflow and prioritization.

Technical Checklist

Item Check Skill
robots.txt Syntax; not blocking important pages robots-txt
Sitemap Submitted to GSC; indexable pages only; ≤50K URLs per sitemap xml-sitemap
HTTPS Sitewide; valid certificate canonical-tag
404/5xx Proper status codes; fix or redirect site-crawlability
noindex No accidental noindex on key pages indexing
Canonical Correct; no conflicts canonical-tag
Core Web Vitals LCP ≤2.5s, INP ≤200ms, CLS <0.1 core-web-vitals
Mobile Mobile-first; content parity; no intrusive interstitials mobile-friendly
Crawlability Redirect chains, broken links, orphan pages site-crawlability

On-Page Checklist

Item Check Skill
Title Unique; 50–60 chars; keyword in first 10 words title-tag
Meta description 150–160 chars; CTA meta-description
Headings One H1; H1→H2→H3 hierarchy heading-structure
Images Alt text; no decorative alt for decorative images image-optimization
Schema Valid; Rich Results Test schema-markup
Internal links From strong pages; descriptive anchors internal-links
Duplicate content Canonical; consolidate or differentiate canonical-tag

Read the full file on GitHub · 80 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. today First seen · 80 lines · 83 tokens per session scan A ede84725f97a

Subscribe to this mod's changes

seo-audit is a skill published in the GitHub repository dalroot/agentic-seo (25 stars, last pushed 6d ago), licensed MIT. It adds 83 tokens to every session and 993 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-10-26.

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