AI search & answer engines
Claude-User
Retrieves websites when a Claude user asks a question that requires them (user-initiated fetches).
Dossier
- Operator
- Anthropic
- Documentation
- support.claude.com
- robots.txt token
Claude-User- Feeds
- live answer fetch
- Follows robots.txt
- Yes, per its documentationAnthropic states its bots honor robots.txt; disallowing Claude-User blocks retrieval for user queries and may reduce visibility in user-directed search.
- How to verify
- Published IP rangesclaude.com
- Names in our logs
claude-user- Researched
- 23 Oct 2026
Observed on New Runtime
Baseline 2026-10-23 · 93-day window · loading live numbers…
- Requests
- 118
- Days active
- 14 / 93
- First seen
- 24 Jul 2026
- Last seen
- 21 Oct 2026
Returningai_user_agent
Identity check claimed vs verified
- No per-family identity check is published for this reader; its name is a claim.
What it reads crawler journeys · current window
- The crawler-journeys aggregate tracks reading depth for the busiest named crawlers only; this family is not among them.
Enters at · 7 days
Leaves from · 7 days
Sources
- support.claude.comsupport.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler