Claude SEO is an open-source Claude Code plugin that runs specialized agents and skills to audit websites across technical SEO, content quality, structured data, AI-search optimization, local and e-commerce SEO, and international SEO. SEO practitioners use it to produce prioritized recommendations based on primary-source guidance, with optional extensions for external data and crawling.
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.
npx skills add AgriciDaniel/claude-seo --skill seo-auditgit clone --depth 1 https://github.com/AgriciDaniel/claude-seoWrote 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.
[](https://agentmods.dev/skills/agricidaniel/claude-seo/seo-audit)<a href="https://agentmods.dev/skills/agricidaniel/claude-seo/seo-audit"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-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.
<a href="https://agentmods.dev/skills/agricidaniel/claude-seo/seo-audit"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-seo/seo-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00064 | $0.01961 |
| Opus 5 | $0.00032 | $0.00981 |
| Sonnet 5 | $0.00013 | $0.00392 |
| Haiku 4.5 | $0.00006 | $0.00196 |
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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Full Website SEO Audit
Process
- Render homepage: use
claude-seo run render_page.py <url> --mode auto --jsonto capture raw HTML, rendered HTML, extracted text, SPA status, and accessibility data when needed - Detect business type: analyze homepage signals per seo orchestrator
- Crawl site: follow internal links up to 500 pages, respect robots.txt
- Delegate to subagents (if available, otherwise run inline sequentially):
seo-technical-- robots.txt, sitemaps, canonicals, Core Web Vitals, security headersseo-content-- E-E-A-T, readability, thin content, AI citation readinessseo-schema-- detection, validation, generation recommendationsseo-sitemap-- structure analysis, quality gates, missing pagesseo-performance-- LCP, INP, CLS measurementsseo-visual-- screenshots, mobile testing, above-fold analysisseo-geo-- AI crawler access, llms.txt, citability, brand mention signalsseo-local-- GBP signals, NAP consistency, reviews, local schema, industry-specific local factors (spawn when Local Service industry detected: brick-and-mortar, SAB, or hybrid business type)seo-maps-- Geo-grid rank tracking, GBP audit, review intelligence, competitor radius mapping (spawn when Local Service detected AND DataForSEO MCP available)seo-google-- CWV field data (CrUX), URL indexation (GSC), organic traffic (GA4) (spawn when Google API credentials detected viaclaude-seo run google_auth.py --check)seo-backlinks-- Backlink profile data: DA/PA, referring domains, anchor text, toxic links (spawn when Moz or Bing API credentials detected viaclaude-seo run backlinks_auth.py --check, or always include Common Crawl domain-level metrics)seo-cluster-- Semantic clustering analysis (spawn when content strategy signals detected: blog, pillar pages, topic clusters)seo-sxo-- Search experience analysis: page-type mismatch, user stories, persona scoring (always include in full audits)seo-drift-- Drift analysis: compare against stored baseline (spawn when drift baseline exists for the URL viaclaude-seo run drift_history.py <url>)seo-ecommerce-- Product schema, marketplace intelligence (spawn when E-commerce industry detected)
- Score -- aggregate into SEO Health Score (0-100)
- Persist audit artifacts -- write all outputs under
{domain}-audit/ - Report -- generate prioritized action plan and optional PDF/HTML report
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 183 lines · 64 tokens per session scan A 7a3d7817fa6b
seo-audit is a skill published in the GitHub repository AgriciDaniel/claude-seo (16,692 stars, last pushed 15d ago), licensed MIT. It adds 64 tokens to every session and 1,961 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 2026-08-30.
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