Claude-User

What Claude-User does

An answer engine fetches a page when a person asks its assistant something in chat, so it can read the page and answer with it. A visit usually means someone, right then, asked about something your site covers.

How to recognize it

Claude-User names itself in its user agent with the token Claude-User. That's what Ethogram matches, as a whole word in any case.

A user agent is only a claim, though: anyone can send Claude-User. Scrapers borrow well-known names to get past rules meant for the real agent, so before you trust a visit, or block one, check where it came from.

How to tell it's really Claude-User

Anthropic publishes the IP ranges Claude-User uses, as JSON: claude.com/crawling/bots.json. A request from inside those ranges is the real Claude-User. One from outside isn't proof of a fake: Anthropic's tools may also fetch from a person's own machine. Ethogram marks those visits unverified, never spoofed.

Ethogram runs these checks on every request and gives each visit a verdict: verified, unverified or spoofed. Spoofed visits are counted apart and never added to Claude-User's numbers. How verdicts work.

Allow or block Claude-User in robots.txt

robots.txt groups its rules by user-agent token. To ask Claude-User to stay off your whole site, add this group:

To let it read everything, name it with an allow rule. A group that names Claude-User replaces the User-agent: * group for it, so it follows only these rules:

robots.txt is a request, not a lock: it's up to Claude-User to read it and follow it. Ethogram reads your robots.txt every day and shows whether Claude-User respects it, with the disallowed paths it asked for. To actually keep it out, use your firewall or bot protection, and check the visit's verdict first so you block impostors, not the real Claude-User.

See what Claude-User does on your site

Most analytics filter Claude-User out as a bot. Ethogram records it on your server, where every request lands, with no script to load, and shows:

• Every visit from Claude-User, with a verdict on whether it's really Claude-User.
• Each visit step by step: the pages it read, what it searched for, and where it was blocked, looped or hit an error.
• Whether it respects your robots.txt, with the disallowed paths it asked for.
• How often its visits reach your goals, such as a purchase or a sign-up, ranked against other agents.
• New versions of its user agent as they appear, and what changed in its behavior with each.
• A heads-up when its visits spike or stop, or when it starts getting blocked.