Universal SEO skill for Claude Code. 26 sub-skills + 19 sub-agents covering technical SEO, E-E-A-T, schema, GEO/AEO, agent readiness (Lighthouse Agentic Browsing, WebMCP, llms.txt), backlinks, local SEO, e-commerce, international SEO, Google APIs, and PDF/Excel reporting. 9 optional extensions for live SEO data.
Claude SEO
Free, open-source SEO audits inside Claude Code.
Rank higher in Google and get cited by AI search.
Claude SEO is a free SEO plugin for Claude Code. Give it any website and it runs a full SEO audit in 10 to 15 minutes, then hands you a clear action plan, sorted by what matters most.
It checks everything a good SEO consultant would:
Technical SEO. Crawlability, indexing, sitemaps, robots.txt, redirects, page speed and Core Web Vitals.
Content quality. E-E-A-T (experience, expertise, authority and trust), thin pages and topic coverage.
Structured data. Finds, validates and writes Schema.org markup for rich results.
AI search (GEO). How likely Google AI Overviews, AI Mode, ChatGPT, Perplexity and Gemini are to cite your pages.
Local and e-commerce SEO. Google Business Profile, reviews, map pack, product pages and international sites.
Claude SEO is built from 26 sub-skills and 19 specialist agents, and up to 17 agents work on your site at the same time. Every recommendation explains why it matters and how you will know it worked.
See it in action
Type /seo in Claude Code to see every command:
Run a full audit and watch the agents fan out across the site:
The project's own site, claude-seo.md, audited with Claude SEO from day one: 10.8K Search Console clicks in its first 12 weeks and a 99 mobile PageSpeed score.
Meet the team
All 19 agents
Agent
Role
Model
Command
seo-technical
Technical SEO Lead
Sonnet
/seo technical
seo-content
Content Editor
Opus
/seo content
seo-schema
Structured Data Engineer
Sonnet
/seo schema
seo-sitemap
Sitemap Architect
Sonnet
/seo sitemap
seo-performance
Performance Engineer
Sonnet
/seo audit
seo-visual
Visual QA
Sonnet
/seo audit
seo-geo
AI Search Analyst
Opus
/seo geo
seo-agentic
Agent Readiness Analyst
Sonnet
/seo agentic
seo-local
Local SEO Specialist
Sonnet
/seo local
seo-maps
Maps Analyst
Sonnet
/seo maps
seo-google
Google Data Analyst
Sonnet
/seo google
seo-backlinks
Link Analyst
Sonnet
/seo backlinks
Live data (extension)
Live Data Analyst
Sonnet
/seo audit
seo-image-gen
Image Producer (extension)
Sonnet
/seo image-gen
seo-cluster
Topic Strategist
Opus
/seo cluster
seo-sxo
Search Experience Designer
Opus
/seo sxo
seo-drift
Change Monitor
Opus
/seo drift
seo-ecommerce
E-commerce Specialist
Sonnet
/seo ecommerce
seo-flow
FLOW Strategist
Sonnet
/seo flow
Built for:
SEO agencies that want weekly audits for every client instead of quarterly ones, with change monitoring to catch problems in between.
In-house SEO teams at SaaS, publishing and e-commerce companies that want a second pair of eyes before every review, AI search included.
Freelance SEO consultants who want to run an audit on the first call and show a real score and the top fixes before writing a proposal.
Commands
30 core and extension commands in six groups. Open one to see what is inside; a few more extension commands are in the full command reference.
Audits and Planning (5 commands)
/seo setup: Create or refresh the isolated Python runtime and Chromium
/seo doctor: Check runtime readiness without changing the system
/seo audit <url>: Full website audit with parallel agents
/seo page <url>: Deep single-page analysis
/seo plan <type>: Strategic SEO planning (saas, local, ecommerce, publisher, agency)
Technical SEO (7 commands)
/seo technical <url>: Technical SEO audit across 9 categories
/seo sitemap <url | generate>: Analyze or generate XML sitemaps
/seo images <url>: Image optimization analysis
/seo hreflang <url>: Hreflang and i18n SEO audit and generation
/seo programmatic <url>: Programmatic SEO analysis and planning
/seo google [command]: Google SEO APIs: GSC, PageSpeed, CrUX, Indexing, GA4, PDF reports
/seo drift baseline | compare | history <url>: SEO drift monitoring with SQLite snapshots
Content and E-E-A-T (6 commands)
/seo content <url>: E-E-A-T and content quality analysis
Typical market prices, for illustration. Your numbers may differ.
How an audit works
It learns your site. Claude SEO detects the type of business (SaaS, local, e-commerce, publisher or agency) and adjusts its checks.
The team fans out. Up to 17 specialist agents audit the site in parallel: technical, content, schema, speed, AI search and more.
You get a plan, not a pile of warnings. Findings are scored and sorted into a prioritized action plan. Each recommendation says what it is based on, what it depends on and how you will know it worked.
Reports are saved as Markdown, and /seo google report turns them into a polished PDF.
See a real report: the start of a schema audit
# Schema Markup Report: rankenstein.pro/about| Metric | Value ||---------------------|---------------------------------------------|| JSON-LD Blocks | 3 || Schema Types | Organization, WebSite, SoftwareApplication || Critical Issues | 2 || Warnings | 5 || Passed Checks | 18 || Overall Grade | B+ (solid foundation, actionable gaps) |**Critical Issue:** The `founder` property only includes Daniel Agrici.
Benjamin Samar (Co-Founder and Technical Director) is displayed on the page
but absent from the schema. This content-schema mismatch can confuse search engines.
/seo setup prepares everything Claude SEO needs (its own Python environment and a headless browser) without touching the rest of your system. Run /seo doctor any time to check it.
Why git clone instead of irm | iex? Claude Code's own security guardrails flag irm ... | iex as a supply chain risk: downloading and executing remote code without verification. The git clone approach lets you inspect claude-seo\install.ps1 before running it.
Two versions. This public version is MIT licensed and free for everyone. AI Marketing Hub Pro members also get a private version with early access to new features. Members install it with:
claude # start Claude Code
/seo audit https://example.com # full site audit with a prioritized plan
/seo page https://example.com/pricing # one page, in depth
/seo geo https://example.com # how ready you are for AI search
/seo schema https://example.com # check and generate structured data
/seo local https://example.com # local SEO and Google Business Profile
FAQ
What is Claude SEO?
A free, open-source SEO audit tool that runs inside Claude Code. It checks technical SEO, Core Web Vitals, content quality, Schema.org structured data, AI search readiness, local SEO, e-commerce and international SEO, then gives you a prioritized action plan. It follows Google's own documentation, including the AI Optimization Guide.
Is it really free?
Yes. It is MIT licensed, with no per-site pricing, no usage limits and no tracking. You only need Claude Code. A few optional extensions connect to paid services where you bring your own account, but everything works without them.
Do I need API keys?
No. Claude SEO works out of the box. If you want real field data, you can connect free Google APIs (PageSpeed Insights, Chrome UX Report, Search Console and Google Analytics 4) with /seo google setup. Your keys stay on your machine.
How does it help with AI search like Google AI Overviews and ChatGPT?
Google says optimizing for AI search is still SEO, so Claude SEO starts with the basics that AI answers rely on: being indexed, fast and clear. Then /seo geo scores how easy your pages are to quote, checks that AI crawlers can reach them and looks at your brand's presence on Wikipedia, Reddit, YouTube and LinkedIn. /seo agentic checks how well AI agents can use your site.
Does it work on JavaScript sites like Next.js, React or Vue?
Yes. When a page needs JavaScript to show its content, Claude SEO opens it in a headless browser automatically, so single-page apps are audited as visitors see them.
How is it different from Screaming Frog or other SEO tools?
Crawlers like Screaming Frog crawl faster and deeper, and big SEO suites have their own backlink databases. Claude SEO does something else: it explains what it finds, sorts it by impact, covers AI search in depth and lets you ask follow-up questions in plain English. Many people use both.
Does my data leave my computer?
Claude SEO runs inside Claude Code, so the pages and data it analyzes are sent to Claude, Anthropic's model, the same as anything else you work on in Claude Code. Reports are saved as files on your machine. No SEO service or other third party sees your data unless you connect an extension or API yourself. Besides the site you audit, some checks read public sources such as Wikipedia, Reddit and Common Crawl. See PRIVACY.md for the full list.
Good to know: requirements, limits and uninstall
Requirements. Claude Code 1.0.33 or newer and Python 3.11 to 3.14. /seo setup installs the headless browser for you.
Cost of a full audit. Five agents that need more judgment run on Opus and the rest on Sonnet, so a full /seo audit uses more of your Claude plan than a single-page check. You can change any agent's model in its file under agents/.
Limits. Without Google API keys, Core Web Vitals are lab estimates and indexing is inferred from the page. Pages that load key content only after scrolling or clicking can give noisy results.
Uninstall. Installed as a plugin: /plugin uninstall claude-seo@agricidaniel-claude-seo. Installed manually:
