Amzn-User
Amzn-User is a bot operated by Amazon that fetches single pages on demand for an AI assistant. Amzn-User is an AI assistant operated by Amazon, used for fetching web content to answer user queries through Alexa and other Amazon AI services. Whether it honours robots.txt is undocumented, and a request claiming to be Amzn-User can be checked against a forward-confirmed reverse DNS lookup.
Amzn-User at a glance
| User agent | Amzn-UserToken only. The operator has not published a full user-agent string, so match on the substring rather than an exact header. |
|---|---|
| Operator | Amazon |
| Purpose | Assistant fetchers |
| Respects robots.txt | Not documented |
| Verification method | Reverse DNS, forward confirmed User-triggered fetch from an Amazon assistant. Same reverse-then-forward DNS check as Amazonbot. https://developer.amazon.com/amazonbot |
| Crawl pattern | Not published |
| Robots.txt tokens | Amzn-User |
| Operator documentation | None published |
Amzn-User is an AI assistant operated by Amazon, used for fetching web content to answer user queries through Alexa and other Amazon AI services.
Allow or block Amzn-User
Paste one of these into the robots.txt file at the root of your domain. Rules are per token, so a block on one crawler leaves every other bot untouched.
User-agent: Amzn-User
Disallow: /Blocks every path for this crawler only.
User-agent: Amzn-User
Allow: /Explicit allow. Useful when a wildcard rule above it would otherwise catch this crawler.
User-agent: Amzn-User
Allow: /
Disallow: /account/
Disallow: /checkout/
Disallow: /searchEdit the Disallow paths to match your own account, checkout and search URLs.
What blocking actually costs you
Blocking Amzn-User means a person who asks about one of your URLs gets an error instead of a summary. That is a support and reputation trade-off, not a training one.
Block every crawler in the directory at onceIs that really Amzn-User?
A user-agent header is a string the client chooses. Scrapers copy Amzn-User precisely because site owners allow it. User-triggered fetch from an Amazon assistant. Same reverse-then-forward DNS check as Amazonbot.
Paste the IP address from your access log below. You will see whether it belongs to a hosting provider, a residential proxy pool or a Tor exit, plus the ASN that announces it, which is what tells you whether the claim holds up.
Other crawlers run by Amazon
Related crawlers
Identify crawlers automatically instead of by hand
Agentscan checks a request against published crawler ranges, reverse DNS and hosting data, then returns a verdict your edge can act on. One call per request, no range files to keep up to date.