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 seogit 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)<a href="https://agentmods.dev/skills/agricidaniel/claude-seo/seo"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-seo/seo/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"><img src="https://agentmods.dev/badge/skills/agricidaniel/claude-seo/seo.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 | $0.00121 | $0.04008 |
| Opus 5 | $0.00060 | $0.02004 |
| Sonnet 5 | $0.00024 | $0.00802 |
| Haiku 4.5 | $0.00012 | $0.00401 |
Grade A, and why
seo 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 9d 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 — 287 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SEO: Universal SEO Analysis Skill
Invocation: /seo $1 $2 where $1 is the command and $2 is the URL or argument.
Runtime: Run bundled Python tools through claude-seo run <script.py>. Plugin
installs expose this command automatically. Repository users run
./bin/claude-seo; manual installers rewrite the command to the isolated
launcher path. Never invoke bundled scripts with a bare Python interpreter.
Comprehensive SEO analysis across all industries (SaaS, local services, e-commerce, publishers, agencies). Orchestrates 24 sub-skills (21 core + 1 framework integration + 2 extension mirrors) and 18 sub-agents. A separate optional Firecrawl extension is also installable (see "Optional Extensions" below).
Quick Reference
| Command | What it does |
|---|---|
/seo audit <url> |
Full website audit with parallel subagent delegation |
/seo page <url> |
Deep single-page analysis |
/seo sitemap <url or generate> |
Analyze or generate XML sitemaps |
/seo schema <url> |
Detect, validate, and generate Schema.org markup |
/seo images <url or optimize> |
Image SEO: on-page audit, SERP analysis, file optimization |
/seo technical <url> |
Technical SEO audit (9 categories) |
/seo content <url> |
E-E-A-T and content quality analysis |
/seo content-brief <topic or url> |
Generate detailed SEO content brief with target keywords, outline, internal links |
/seo geo <url> |
AI Overviews / Generative Engine Optimization |
/seo plan <business-type> |
Strategic SEO planning |
/seo programmatic [url|plan] |
Programmatic SEO analysis and planning |
/seo competitor-pages [url|generate] |
Competitor comparison page generation |
/seo local <url> |
Local SEO analysis (GBP, citations, reviews, map pack) |
/seo maps [command] [args] |
Maps intelligence (geo-grid, GBP audit, reviews, competitors) |
/seo hreflang [url] |
Hreflang/i18n SEO audit and generation |
/seo google [command] [url] |
Google SEO APIs (GSC, PageSpeed, CrUX, Indexing, GA4) |
/seo backlinks <url> |
Backlink profile analysis (free: Moz, Bing, CC; premium: DataForSEO) |
/seo cluster <seed-keyword> |
SERP-based semantic clustering and content architecture |
/seo sxo <url> |
Search Experience Optimization: page-type analysis, user stories, personas |
/seo drift baseline <url> |
Capture SEO baseline for change monitoring |
/seo drift compare <url> |
Compare current state to stored baseline |
/seo drift history <url> |
Show drift history over time |
/seo ecommerce <url> |
E-commerce SEO: product schema, marketplace intelligence |
/seo firecrawl [command] <url> |
Full-site crawling and site mapping (extension) |
/seo dataforseo [command] |
Live SEO data via DataForSEO (extension) |
/seo image-gen [use-case] <description> |
AI image generation for SEO assets (extension) |
/seo flow [stage] [url|topic] |
FLOW framework: evidence-led prompts for Find, Leverage, Optimize, Win, or Local stages |
/seo setup |
Explicitly create or refresh the isolated Python runtime and Chromium |
/seo doctor |
Check runtime readiness without changing the system |
What ships with it
14 files 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.
- LICENSE.txt 143 B
- references/backlink-quality.md 3.4 KB
- references/cwv-thresholds.md 7.0 KB
- references/eeat-framework.md 8.1 KB
- references/free-backlink-sources.md 5.6 KB
- references/local-schema-types.md 9.2 KB
- references/local-seo-signals.md 9.6 KB
- references/maps-api-endpoints.md 5.9 KB
- references/maps-free-apis.md 6.0 KB
- references/maps-gbp-checklist.md 5.9 KB
- references/maps-geo-grid.md 4.3 KB
- references/quality-gates.md 5.1 KB
- references/schema-types.md 8.0 KB
- references/thinking-framework.md 9.3 KB
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.
- 9d ago First seen · 287 lines · 121 tokens per session scan A c04477cff493
seo is a skill published in the GitHub repository AgriciDaniel/claude-seo (16,621 stars, last pushed 14d ago), licensed MIT. It adds 121 tokens to every session and 4,008 once invoked, about $0.0006 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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