---
title: "Amzn-User: user agent, token, block rate | Agent Ready Crawlers"
description: "Amzn-User from Amazon: exact user-agent string, robots.txt token Amzn-User, live answer fetch purpose and how to verify it. Read 2026-11-04."
canonical: https://agentreadycrawlers.com/crawlers/amzn-user
site: "Agent Ready Crawlers"
last_updated: 2026-11-04
section: "Crawlers"
---

# Amzn-User: user agent, token, block rate | Agent Ready Crawlers

> Amzn-User from Amazon: exact user-agent string, robots.txt token Amzn-User, live answer fetch purpose and how to verify it. Read 2026-11-04.

Source: https://agentreadycrawlers.com/crawlers/amzn-user
Site: Agent Ready Crawlers
Last reviewed: 2026-11-04

Live answer fetcher from Amazon

# Amzn-User

In short

Amzn-User is Amazon's live answer fetcher. The token to write in robots.txt is Amzn-User. Check a visitor against the operator's published IP list. The crawl of 2026-11-04 did not measure Amzn-User. Fetches live information for Alexa answers. Amzn-User: because actions can be initiated by a user, Amzn-User may not follow all robots.txt directives.

Operator

[Amazon](https://agentreadycrawlers.com/crawlers/operator/amazon/) Vendor profile: [Amazon](https://agentreadycrawlers.com/vendors/amazon/)

Purpose

Live answer fetch [All live answer fetch rows](https://agentreadycrawlers.com/crawlers/purpose/live-answer-fetch/). Fetches a page because a person asked an assistant about it, one request at a time.

User-agent string

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

robots.txt token

`Amzn-User` Matched case-insensitively (RFC 9309). The token and the user-agent string are different things.

Respects robots.txt

May not apply (user-triggered)

Amazon: because actions can be initiated by a user, Amzn-User may not follow all robots.txt directives. Not used for training. [Source](https://developer.amazon.com/amazonbot), read 2026-11-04.

Verification

Published IP list (JSON)

Match the source address of a request against the operator's published list. [Documentation](https://developer.amazon.com/amazonbot/live-ip-addresses/), read 2026-11-04.

IP ranges

[developer.amazon.com/amazonbot/live-ip-addresses/](https://developer.amazon.com/amazonbot/live-ip-addresses/)

Rate behaviour

User-triggered.

Block rate

Not measured: the crawl checked 31 AI and search tokens, and `Amzn-User` is not one of them.

Documentation

[developer.amazon.com](https://developer.amazon.com/amazonbot), read 2026-11-04.

Note. Fetches live information for Alexa answers.

## Allow and refuse lines

### To allow Amzn-User

User-agent: Amzn-User
Allow: /

### To refuse Amzn-User

User-agent: Amzn-User
Disallow: /

Refusing or allowing in robots.txt states a preference. For this row the operator or its documentation says robots.txt may not govern the fetch, so enforcement belongs in your WAF.

## Amazon in the Verification Ledger

Three IP lists on HTML pages with JSON bodies; nothing for Buy for Me or Rufus. [All operators](https://agentreadycrawlers.com/verification/).

IP lists

-   [developer.amazon.com/amazonbot/ip-addresses/](https://developer.amazon.com/amazonbot/ip-addresses/)
-   [developer.amazon.com/amazonbot/searchbot-ip-addresses/](https://developer.amazon.com/amazonbot/searchbot-ip-addresses/)
-   [developer.amazon.com/amazonbot/live-ip-addresses/](https://developer.amazon.com/amazonbot/live-ip-addresses/)

Reverse DNS

publishes nothing

Key directory

publishes nothing

Cloudflare

not checked

Visa TAP registry

no public operator-level registration found (checked 2026-11-04)

Mastercard Agent Pay

no public operator-level registration found (checked 2026-11-04)

## Other Amazon rows

-   [Amazonbot](https://agentreadycrawlers.com/crawlers/amazonbot/) Training token Amazonbot
-   [Amzn-SearchBot](https://agentreadycrawlers.com/crawlers/amzn-searchbot/) Search index token Amzn-SearchBot
-   [Buy for Me (shopping agent)](https://agentreadycrawlers.com/crawlers/amazon-buy-for-me/) Shopping agent no token
-   [Rufus (shopping assistant)](https://agentreadycrawlers.com/crawlers/amazon-rufus/) Shopping agent no token

## Sources

-   [Amazon Web Search crawlers](https://developer.amazon.com/amazonbot) read 2026-11-04
-   [developer.amazon.com: live ip addresses](https://developer.amazon.com/amazonbot/live-ip-addresses/) read 2026-11-04

Last reviewed 2026-11-04