Agent Ready Crawlers

The field guide to every AI crawler and agent at the door, and the vendors who decide who gets in.

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 Vendor profile: Amazon
Purpose
Live answer fetch All live answer fetch rows. 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, read 2026-11-04.

Verification

Published IP list (JSON)

Match the source address of a request against the operator's published list. Documentation, read 2026-11-04.

IP ranges
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, 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.

IP lists
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

Sources

Last reviewed 2026-11-04