AccessibleWebBot

Verifiable

The crawler Accessible Web runs for its RAMP accessibility-monitoring product. It reads customers' sitemaps to find newly added pages and fetches the individual pages RAMP users ask to have scanned for accessibility problems, in both a plain and a headless-browser profile. The operator documents both user agents and a reverse-DNS method for confirming that a request really came from it, and explains how to allow the bot past robots.txt rules meant for search engines.

Operated by Accessible Web · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexAccessibleWebBot/\d
observedMozilla/5.0 (compatible; AccessibleWebBot/1.0; +https://accessibleweb.com/bot/)
observedMozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; AccessibleWebBot/1.0; +https://accessibleweb.com/bot/) HeadlessChrome/W.X.Y.Z Safari/537.36

How to verify

Reverse-DNS check a client IP

dig -x <client-ip> +short   # expect a hostname matching *.accessiblewebbot.com

Reverse-DNS suffixes: *.accessiblewebbot.com

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Verifiable
Respects robots.txt
Service traffic you configured — robots.txt does not apply
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.