Mozilla/5.0 (Macintosh; Intel Mac OS X 14_6_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.5780.193 Safari/537.36; compatible; Claude-User/1.0; +https://www.anthropic.com/claude-user
first seen 2026-08-28 20:23 · last seen 2026-08-28 20:23 · JSON
Distinct clients per day (last 30 days, peak 1/day)
Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.
Decomposed attributes
Browser / client
Claude-User 1.0
Operating system
macOS 14.6.1
Device class
bot
Declared URL
https://www.anthropic.com/claude-user
Note
inferred 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.