What this checks, and why it's different from a normal SEO score
This tool runs five checks the moment you submit a URL: whether robots.txt blocks major AI crawlers (GPTBot, ClaudeBot, Google-Extended, PerplexityBot, Bingbot), whether an llms.txt discovery file exists, whether Organization/LocalBusiness and FAQPage structured data is present, whether a max-snippet:-1 robots meta directive is set so AI and search snippets aren't truncated, and whether a sitemap and RSS/Atom feed exist as freshness signals. All of it is deterministic — no AI judgement in the free score.
A classic SEO or website checker asks "will Google rank this well." This tool asks a narrower, newer question: "can ChatGPT, Claude, Perplexity or an AI Overview actually read, understand and cite this page at all." A site can score well on traditional SEO and still be functionally invisible to AI answer engines — most commonly because of an overlooked robots.txt block, a missing llms.txt, or content locked behind formats (client-rendered-only text, no FAQ schema) that AI crawlers skip.
For the fix side of what this surfaces, see GEO / AI Search Optimization; to build a curated llms.txt directly from your key pages, use the llms.txt Generator. For classic on-page technical SEO, pair this with the Website Grader.