How to Get an Agency-Level SEO Audit of Any Website, Free, Inside Claude Code
A free, open-source skill for Claude Code audits any website the way Google does, scores it out of 100 and hands you a ranked list of what to fix first. What it checks, how to set it up, and how to read the report.
SEO agencies charge hundreds of dollars, often thousands, to audit a website. There is now a free, open-source skill for Claude Code that runs the same kind of audit with one command, on your own site or a client's. It has almost 18,000 stars on GitHub.
It checks your site the way Google does and scores everything that's holding it back: pages that load too slowly, pages Google can't even find, missing info Google needs to show your business in local search, and whether Google's AI answers would ever mention you. Then it gives you a health score out of 100 and a ranked action plan, the most important fix first, instead of paying someone to tell you.
What it checks
| Area | What it looks for | Why it matters |
|---|---|---|
| Speed | Core Web Vitals: the main content loads in under 2.5 seconds (LCP), the page reacts in under 200 ms (INP), nothing jumps around (CLS under 0.1). | Slow pages lose visitors and Google measures all three. |
| Indexing | Pages Google can't crawl or index: blocked pages, broken sitemaps, canonical mistakes, redirect chains. | A page Google can't find can't rank. These come out as Critical. |
| Local search | Your Google Business Profile (categories, hours, photos, reviews) and whether your name, address and phone match everywhere. | Missing info keeps your business out of the map results for "near me" searches. |
| AI answers | Whether your pages give short, self-contained answers Google's AI Overviews and AI Mode can quote: question-style headings, clear sources, structured data. | Google's own guidance: optimizing for AI search is still SEO. If you're not quotable, you're not mentioned. |
| Content, on-page and schema | E-E-A-T signals, titles and headings, internal links, images, and Schema.org markup it can validate or write for you. | These carry most of the score. |
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