Crawlability is whether an AI bot can actually reach and read your pages, checked rather than assumed. AI crawlers do not run JavaScript, so a site that looks fine in a browser can be a blank shell to them. Crawlability is what they really see.
Why it matters
Every claim about AI visibility rests on one thing that is easy to skip: the engine has to be able to read the page first. A blocked crawler or a JavaScript-only homepage means the best content in the world is invisible to it.
The trap is that a site can look perfect to you and be unreadable to a bot. You see the rendered page; a crawler that does not run JavaScript sees the raw HTML, which may be an empty shell waiting for scripts that never run for it.
So crawlability is measured, not assumed. It is the floor the rest of AI search visibility stands on.
How Jinn treats it
Jinn's crawlability check reads what a non-JavaScript crawler actually sees and runs five checks across three tiers: are the AI crawlers allowed, does the raw homepage carry real content, is there valid structured data, are your key pages reachable, and is a usable llms.txt live.
The verdict is driven by the worst blocker, so a genuine problem can never hide behind passing polish checks. A blocked crawler reads as blocked no matter how good everything else looks.
The free Agent Access Checker reads your site the way a bot does and tells you, three-state honest, whether the major AI crawlers are allowed, blocked, or unknown. See it
Related terms
A bot cannot cite a page it cannot read.
Crawlability is the floor everything else stands on. Check what the AI crawlers actually see.