User-Agent

Mozilla/5.0 (Macintosh; Intel Mac OS X 14_5) AppleWebKit/537.36 (KHTML, like Gecko; compatible; Claude-User/1.0; +https://www.anthropic.com/claude-user) Chrome/134.0.6564.246 Safari/537.36

first seen 2026-09-05 21:08 · last seen 2026-09-05 21:08 · JSON

Decomposed attributes

Browser / clientClaude-User 1.0
Operating systemmacOS 14.5
Device classbot
Declared URLhttps://www.anthropic.com/claude-user Chrome/134.0.6564.246 Safari/537.36
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d131200_f57a46bbacb6_9249cab70c771

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr05enus_f3bb7aa45ec4_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:57+7:0:1420:mss*30,9:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
42600_2-4-8-1-3_1420_91

Country

fingerprintco-occurrences
US · United States1

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC1