AI crawlers / AI crawlers
Amzn-User: what it does and what blocking it changes
What Amzn-User is
Amzn-User is an Amazon user agent that supports user actions, such as responding to Alexa queries that require up-to-date information. Amazon says that when a customer asks a question, Amzn-User may fetch live information from the web to provide accurate answers on the user's behalf. Amazon says it does not crawl content for generative AI model training.
| Fact | Amzn-User |
|---|---|
| Operator | Amazon |
| Job | User-triggered fetch |
| robots.txt token | Amzn-User |
| Follows robots.txt | Partial, may not follow all robots.txt directives because actions can be user-initiated |
| IP addresses | Listed on the vendor's page (developer.amazon.com/amazonbot/live-ip-addresses) |
| Vendor page read | 24 October 2026 |
What the vendor says
In the vendor's words (English original): “Because actions taken by Amzn-User can be initiated by a user, it may not follow all robots.txt directives.”
Source: Amazon: About Amazonbot, read on 24 October 2026.
What happens if you block Amzn-User
Amazon says Amzn-User may not follow all robots.txt directives because its actions can be initiated by a user. Amazon also says each of its user agent settings (Amazonbot, Amzn-SearchBot, Amzn-User) is independent of the others and may take about 24 hours to reflect changes.
The robots.txt lines
To allow Amzn-User:
User-agent: Amzn-User
Allow: /To block Amzn-User:
User-agent: Amzn-User
Disallow: /Paste a block into the robots.txt at the root of your host, for example https://example.com/robots.txt. A group for one token does not cover the operator's other crawlers.
The user-agent string the vendor shows:
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amzn-User/0.1) Chrome/W.X.Y.Z Safari/537.36How to tell a real request from a fake one
Amazon publishes the Amzn-User IP addresses on a web page that shows the list as JSON, and links it from the Amazonbot documentation page.
Compare with Amzn-SearchBot
Amzn-SearchBot: Amzn-SearchBot is an automated crawler for Amazon search experiences that Amazon says respects robots.txt, while Amzn-User fetches live information when a customer asks and may not follow all directives.
Your own site
The free check in the box above tests eight crawlers (GPTBot, OAI-SearchBot, ChatGPT-User, PerplexityBot, ClaudeBot, Google-Extended, Bingbot and Googlebot). Amzn-User is not one of them: read your robots.txt for a Amzn-User group and look for the user agent in your server log. The full list of crawlers is on the AI crawler hub.
Questions people ask
Does Amzn-User follow robots.txt?
Not always. Partial, may not follow all robots.txt directives because actions can be user-initiated. A rule for Amzn-User in robots.txt may therefore not stop it. To refuse it for certain, use a firewall or CDN rule that matches both the user agent and the published addresses.
How do I know Amzn-User is really blocked?
robots.txt is only one layer: a CDN or firewall rule can also turn a crawler away, and a crawler can ignore the file. Check your server log for the user agent, and test the address from outside your network.
Sources
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