GitHub

AgriciDaniel/claude-seo — 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.

SoftwareFirst seen October 25, 2026197 points

Claude SEO is a free, open-source plugin for Claude Code, a coding assistant. It runs search engine optimization (SEO) checks on a website and gives a plan to improve it.

What happened

A developer shared Claude SEO, a free tool that works inside Claude Code. You give it a website, and it runs a full SEO audit in about 10 to 15 minutes. It then gives you an action plan, sorted by what matters most. The project is listed on GitHub under the MIT license, which means anyone can use and change it for free.

Key numbers and facts

26 sub-skills (specific checks) and 19 specialist agents (helper programs)
Up to 17 agents can work on your site at the same time
A full audit takes 10 to 15 minutes
The project's own site reports 10.8K Search Console clicks in its first 12 weeks
The project's own site reports a mobile PageSpeed score of 99

What it checks

The tool covers many parts of SEO. It checks technical health, such as whether Google can crawl and index pages, and how fast pages load. It reviews content quality, using a standard called E-E-A-T (experience, expertise, authority and trust). It also checks structured data, which is extra labels that help search engines understand a page. It looks at AI search, meaning how likely tools like ChatGPT, Perplexity and Google AI Overviews are to cite a page. It also covers local SEO, e-commerce and international sites.

Why it matters

SEO is hard, and good SEO consultants can cost a lot. A free tool that checks many areas at once can help small teams and new website owners find problems fast. Because it looks at AI search too, it also helps sites that want to be quoted in AI answers. Still, the numbers come from the project's own site, so results on other sites may be different.

What to watch

Whether the audit advice leads to real ranking gains on other websites
How the project handles optional extensions that pull in live SEO data
Updates to the agent-readiness checks, such as llms.txt and WebMCP
Growth in GitHub stars and community use

Glossary

Claude Code: A coding assistant from Anthropic that runs in a terminal, and that Claude SEO plugs into.
SEO: Search engine optimization: making a website easier to find in search results.
E-E-A-T: Google's idea of quality: experience, expertise, authority and trust.