Weak AI visibility with 6 of 22 criteria passing. Biggest gap: llms.txt file.
Verdict
fabius.io has a usable technical baseline for discoverability, but it is not AEO-ready in its current state. Core strengths include HTTPS delivery, a valid sitemap with 32 URLs, strong canonical implementation, and high factual density (112 quantitative data points). However, foundational machine-readable signals are missing: `llms.txt` returns 404, there is no JSON-LD schema at all, no RSS/Atom feed, and no AI permissions file. The site can improve quickly, but it needs immediate work on structured data, AI crawler guidance, and extractable content architecture.
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Guides for the criteria with the most room for improvement
Tidio has a 251-line llms.txt. Crisp has zero. The score gap: +29 points. This single file tells AI assistants exactly what your site does -and without it, they're guessing.
Tidio runs 4 JSON-LD schema types. Crisp runs zero. That's not a coincidence -it's the difference between a 63 and a 34. Structured data is the machine-readable layer AI trusts most.
Sitemaps tell crawlers what exists. RSS feeds tell them what changed. If you don't have one, your new content waits days -or weeks -to be discovered.
AI engines are citation machines -they need specific facts to quote. A page full of general advice with zero data points gives them nothing to work with.
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