Claude-SearchBot: Anthropic's ai search crawler
Claude-SearchBot belongs to Anthropic. It builds the index an AI assistant searches when it answers questions. Block it and your pages can't be found or cited in that assistant's search results.
| Operator | Anthropic |
|---|---|
| Used for | Claude search |
| Type | AI search crawler |
| robots.txt name | Claude-SearchBot |
| User agent | Not published by the operator |
| Published IP ranges | https://claude.com/crawling/bots.json |
| Official documentation | support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from- |
Anthropic documents the robots.txt name but not a full user-agent string.
Allow or block Claude-SearchBot in robots.txt
To block it on the whole site:
User-agent: Claude-SearchBot
Disallow: /To allow it explicitly (useful when a rule for all bots would block it):
User-agent: Claude-SearchBot
Allow: /Anthropic says its bots honour robots.txt. Disallowing this one stops Anthropic indexing your content for search.
robots.txt is a request, not a wall. A CDN or firewall rule can turn a bot away even when robots.txt allows it, and nothing in the file will show that.
The free check requests your home page as a browser and as AI bots, reads your robots.txt and shows what gets blocked. No sign-up.
Check my siteIs it really Claude-SearchBot?
Anyone can send a request with this bot's name. Anthropic publishes the IP ranges its requests come from, so a request that carries the name from another address is an impostor. PageLens checks every request from this bot against that list.
See Claude-SearchBot on your own site
Claude-SearchBot doesn't run JavaScript, so analytics scripts never record it. AI Visibility in PageLens reads it from your server or CDN and shows which pages it requested, when, and which requests ended in a 404.