About our scanner

This page exists because our crawler says it does. If you found a request in your server logs from ExhibitA-Scanner, this explains who we are, what we asked for, and how to stop us.

What the scanner is

Limen operates an accessibility auditing tool. When one of our customers asks us to check their own site across several pages, or to re-check it weekly, our server fetches those pages and runs an automated WCAG 2.1 audit against the HTML.

The user agent string is:

ExhibitA-Scanner/1.0 (+https://limen.ae/about-our-scanner)

Why we might have fetched your site

Because somebody with access to it asked us to. Our crawler is never speculative and never broad — it does not discover sites, follow links off your domain, or build an index. It fetches only what a paying customer entered as their own address, and only the pages reachable from it.

If you did not request this and do not recognise the customer, contact us and we will stop and tell you what we hold.

How we behave

• We obey robots.txt. A Disallow that applies to * or to ExhibitA stops link discovery on your site.
• We are slow on purpose. At most three requests in flight, with a hard page cap of 10 to 50 depending on the customer's plan.
• Weekly at most. Monitored sites are re-checked no more than once every six days.
• We read, we never write. Every request is a GET. We do not submit forms, follow links that change state, or attempt to log in.
• We give up quickly. Twelve-second timeout, three redirects maximum, and a 3 MB ceiling on any single response.

What we keep

For a one-off multi-page scan: nothing. The audit runs, the result is returned to the customer, and the page content is discarded.

For weekly monitoring we store, per check: the exposure score, the count of findings per rule, and a SHA-256 hash of the page source. We do not store your page source, and we never have. The hash lets us tell whether a page changed without keeping the page.

How to block us

Add this to your robots.txt:

User-agent: ExhibitA
Disallow: /

We will stop discovering pages on your site at the next check. If you would rather we made no request at all, contact us and we will block your domain at our end.

Contact

Write to [CONTACT EMAIL]. We answer within five working days, and sooner if you tell us the crawler is causing a problem.