Directory / AI crawlers

ClaudeBot

Listed only

Anthropic's web crawler collecting publicly available web data for training Claude models. Anthropic does not publish crawler IP ranges or rDNS.

Operated by Anthropic · Official documentation

User agents

Patterns this directory matches, with real observed strings.

  • ClaudeBot/\d
  • Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

How to verify

No verification recipe published by the operator.

Good Bot Practices scorecard

  • Identifies honestly

    Stable UA token documented (1 pattern)

  • Verifiable

    Operator publishes no verification path

  • Respects robots.txt

    Honors robots.txt (token: ClaudeBot)

  • Behaves

    Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset

  • Reachable operator

    Operator and documentation published

Measured against the Good Bot Practices.