Amzn-User (Amazon): what it is and how to allow or block it

Updated 2026-10-30 · checked against the operator's documentation on 2026-10-30

Amzn-User is Amazon's fetcher for live answers such as Alexa questions. Verify it by Amazon's IP list; a robots.txt block may not stop all requests, per Amazon. Its robots.txt token is Amzn-User.

Facts

Operator: Amazon

Category: AI user-triggered fetcher

robots.txt token: Amzn-User

Honors robots.txt?: May not follow all (user-initiated), per Amazon. Amazon says that because actions taken by Amzn-User can be initiated by a user, it may not follow all robots.txt directives.

User-agent example: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amzn-User/0.1) Chrome/W.X.Y.Z Safari/537.36

Official source: Amazon: Amazon Web Search crawlers

Published IP ranges: https://developer.amazon.com/amazonbot/live-ip-addresses/

Compared with the source: 2026-10-30

What it is used for

Per Amazon, Amzn-User supports user actions, such as responding to Alexa queries that require up-to-date information, by fetching live information from the web on the user's behalf. Amazon says it does not crawl content for generative AI model training.

Opens one page because a person (or an answer being generated) needs it. The operator may treat robots.txt differently for these requests.

What happens if you block it

Per Amazon, Amzn-User may not follow all robots.txt directives because its actions can be initiated by a user, so a block may not stop every request. Amazon's search crawler is Amzn-SearchBot, with its own token.

Is it really Amzn-User?

Anyone can send Amzn-User as a user agent, so a log line proves nothing by itself. The way to tell is the requesting IP address.

Compare the IP address with the Amazon: published IP ranges. A request from outside those ranges is not the operator's crawler.
Guide: Do ChatGPT, Claude and Gemini obey your robots.txt? What operators document, and a test for your logs.
Guide: How to let AI assistants read your site (and which bots to block).
Guide: How to block AI crawlers in robots.txt: tokens for training, search and user requests.
Paste any user agent from your logs into the user-agent lookup, or follow the scripts in Fake Googlebots and PHP scanners.

How to allow or block Amzn-User

Add one of these groups to the robots.txt at the root of your domain. A group that names the bot overrides a general User-agent: * group.

Allow Amzn-User

User-agent: Amzn-User
Allow: /

Block Amzn-User

User-agent: Amzn-User
Disallow: /

Does your site allow Amzn-User today? The checker evaluates your robots.txt for this and every other bot.Check my site

What we see on this site

No request identifying as Amzn-User has been recorded since 19 Oct, so there is nothing to show yet. We never fill this in with estimates.

Counts come from this site's own server; they hold no IP addresses or URLs, and a user agent is only a claim. See the bot traffic data and the methodology.

Questions about Amzn-User

What is Amzn-User?

Amazon's fetcher that retrieves live web pages for user actions, such as answering Alexa questions. Per Amazon, Amzn-User supports user actions, such as responding to Alexa queries that require up-to-date information, by fetching live information from the web on the user's behalf. Amazon says it does not crawl content for generative AI model training.

Is Amzn-User safe and legitimate?

The real Amzn-User is an AI user-triggered fetcher run by Amazon. A user-agent string is only a claim, though, so anyone can send it. Compare the requesting IP address with the published IP ranges.

Does Amzn-User obey robots.txt?

May not follow all (user-initiated), per Amazon. Amazon says that because actions taken by Amzn-User can be initiated by a user, it may not follow all robots.txt directives.

How do I block Amzn-User?

Robots.txt may not stop it. Amazon says that because actions taken by Amzn-User can be initiated by a user, it may not follow all robots.txt directives. If you add a group anyway, use User-agent: Amzn-User followed by Disallow: /.

Will blocking Amzn-User hurt my Google rankings or AI visibility?

It affects only fetches made on request. The operator may treat robots.txt differently for these requests, so a block may not hold. Per Amazon, Amzn-User may not follow all robots.txt directives because its actions can be initiated by a user, so a block may not stop every request. Amazon's search crawler is Amzn-SearchBot, with its own token.

Other AI user-triggered fetchers

All AI User-Triggered Fetchers · Bot directory · Bots from Amazon · Which bots to allow or block · robots.txt generator · See a page as a bot