AI agent directory / Amzn-User
Amzn-User
AI fetcher from Amazon
Fetches a page when an Alexa customer's question needs up-to-date information from the web.
Amzn-User is the user agent Amazon uses when a customer's request needs fresh information from the web. Amazon's example is an Alexa question that requires up-to-date facts: Amzn-User fetches the page and the answer is built from it on the user's behalf.
It is one of three Amazon web agents, next to Amazonbot and Amzn-SearchBot. Amazon says each one is controlled separately, and that Amzn-User does not crawl content for generative AI model training.
| Run by | Amazon |
|---|---|
| Type | AI fetcher |
| Purpose | Acts for a person |
| Acts for | A person, in the moment |
| robots.txt token | Amzn-User |
| IP ranges | Published by Amazon |
| Documentation | Amazon's documentation |
Amzn-User user-agent string
Amzn-User (Amazon's example; W.X.Y.Z is the Chrome version) (source):
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amzn-User/0.1) Chrome/W.X.Y.Z Safari/537.36
Match on Amzn-User; the rest of the string changes between versions.
Verifying it's really Amzn-User
Amazon publishes the IP addresses Amzn-User uses at developer.amazon.com/amazonbot/live-ip-addresses/. The page shows a JSON document with a prefixes list of single ipv4Prefix addresses. Treat a request that names Amzn-User but comes from an address outside that list as unverified.
How Airglow identifies it
- DeclaredIt names itself in the User-Agent:
Amzn-User.
Every visit in Airglow says which of these applied, so you can decide how much to trust it.
Seeing it on your site
It reads pages without running JavaScript, so Airglow counts it through a server connection (Cloudflare). It's labeled as context, not replayed.
Allowing or blocking Amzn-User
Amzn-User reads the Amzn-User group in your robots.txt. To keep it out of the whole site:
User-agent: Amzn-User Disallow: /
Airglow shows, for every agent that visits, whether your robots.txt lets it in, and helps you write rules by purpose (training, search, acting for a person).
Does Amzn-User follow robots.txt?
Not always. Amazon's documentation says that because Amzn-User's actions can be started by a user, it "may not follow all robots.txt directives." A Disallow rule for Amzn-User states your preference, but Amazon does not promise it will block every fetch.
For its automated crawling, Amazon says its agents read robots.txt per host, may use a cached copy up to 30 days old, honor noindex, noarchive, none and rel=nofollow, and ignore crawl-delay. Changes to any of the three Amazon user agents can take about 24 hours to take effect.
Amzn-User, Amazonbot and Amzn-SearchBot
- Amazonbot crawls to improve Amazon products and services, and its content may be used to train Amazon AI models.
- Amzn-SearchBot crawls for search experiences such as Alexa and does not collect content for model training. If robots.txt does not name it but allows other search bots, it follows the rules given to those bots.
- Amzn-User fetches pages in response to a customer request and does not collect content for model training.
Blocking Amazonbot does not block Amzn-User. Each token needs its own robots.txt group.
Questions
What is Amzn-User?
It is Amazon's user agent for fetching web pages in response to a customer action, such as an Alexa question that needs current information.
Is Amzn-User used to train AI models?
Amazon says Amzn-User does not crawl content for generative AI model training. Amazonbot is the Amazon agent whose content may be used for training.
Can I block Amzn-User with robots.txt?
You can add a group for the Amzn-User token, but Amazon says Amzn-User may not follow all robots.txt directives because its fetches can be started by a user.
Does blocking Amazonbot also block Amzn-User?
No. Amazon says each of its user agent settings is independent, so Amazonbot, Amzn-SearchBot and Amzn-User each need their own rules.
Who do I contact about Amzn-User?
Amazon asks content owners to email amazonbot@amazon.com and to include the relevant domain names in the message.
Other agents from Amazon
Sources
Last reviewed November 10, 2026.
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