AI search · Anthropic

Claude-SearchBot

Indexes pages to improve the quality of Claude’s web search results. Not used for training; that is ClaudeBot.

Operator: Anthropic
Purpose: AI answers. Crawlers that build the indexes AI assistants answer from and cite. Blocking one keeps you out of its answers.
robots.txt token: Claude-SearchBot
User agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Claude-SearchBot/1.0; +https://www.anthropic.com)
Documentation: support.claude.com/en/articles/8896518

Block Claude-SearchBot

Add a group naming it to /robots.txt. Compliant crawlers stop before requesting any page. A firewall rule on the user agent is the only way to enforce it against crawlers that ignore robots.txt.

User-agent: Claude-SearchBot
Disallow: /

Allow Claude-SearchBot when everything else is blocked

A group naming the bot wins over User-agent: *, so an explicit allow lets it in while your catch-all rules stay in place.

User-agent: Claude-SearchBot
Allow: /

User-agent: *
Disallow: /

Does Claude-SearchBot reach your site?

The checker applies your robots.txt the way Claude-SearchBot does, then requests your page with the user agent above, alongside 29 other bots.

Also run by Anthropic: ClaudeBot, Claude-User.

Other ai search: OAI-SearchBot, PerplexityBot, DuckAssistBot, Amazonbot, YouBot.

Build a complete file with the robots.txt generator.