RedHub AI
How the roll-up gate works
How the AI Crawler Access Audit gate works
This tool grades whether AI engines can reach and render your site. It reads 5 AI engines and rolls them into one verdict — the worst, never the average — then a gate that can only make it worse.
The 5 AI engines
A robots.txt disallow or a WAF/CDN block means the crawler never fetches the page — content that's never fetched can't be cited, so that engine is INVISIBLE whatever its score. One invisible engine walls off the site, regardless of the score.
Why: Two engines can crawl the site and two are only partially blocked — but ChatGPT Search is walled off entirely: robots.txt disallows OAI-SearchBot, so it never fetches the page. Content that's never fetched can't be cited. The site verdict is the worst engine, never the average.
No single engine is the crisis — the clustering is. The roll-up takes the worst, the gate escalates when trouble compounds, and it names the one thing to fix first. Grades the marks you record; fetches nothing. No citation outcome is guaranteed.