What is ClaudeBot ?
ClaudeBot is a user-agent associated with Anthropic, an AI safety-focused research company. This bot has been observed crawling websites, likely to collect data for training Anthropic’s language models, notably the Claude family. While Anthropic provides minimal public documentation on this specific bot, multiple threat intelligence and bot monitoring platforms (e.g., DataDome) list ClaudeBot as one of the agents used for large-scale data gathering across the web. Its presence in server logs is often associated with model training crawls.
Who is operating ClaudeBot ?
ClaudeBot is operated by Anthropic PBC, a US-based AI company founded in 2021 by former OpenAI researchers. The organization emphasizes AI alignment and transparency in its mission. Its public-facing website is https://www.anthropic.com, but ClaudeBot does not yet have a dedicated disclosure page. The connection to ClaudeBot has been confirmed by bot-tracking providers such as DataDome and HumanSignal.
Why you should be interested in ClaudeBot ?
From a webmaster’s perspective, ClaudeBot is part of the broader category of crawlers used for AI data harvesting. While Anthropic promotes responsible AI practices, ClaudeBot is not yet thoroughly documented, and its crawling behavior is not always predictable. If you do not wish your content to be part of training corpora for Anthropic’s models, you should implement explicit blocking measures, as ClaudeBot has been flagged for not systematically honoring robots.txt directives.
How to block ClaudeBot ?
1. Robots.txt File:
Add the following rule to your robots.txt file
# block ClaudeBot User-agent: ClaudeBot Disallow: /
2. User-Agent Filtering:
You may configure your server (e.g., Apache, Nginx) to block requests with the “ClaudeBot” user-agent string.
3. Monitor Activity:
Track visits from unverified Anthropic-related user agents. Some sources report ClaudeBot activity under varying identifiers, so logs should be reviewed carefully.
About the bot
Owner: Anthropic PBC
Owner URL: anthropic.com
Bot URL: anthropic.com
Bot User Agent: Mozilla/5.0 (compatible; ClaudeBot/1.0; +https://www.anthropic.com)
Respects robots.txt: Yes
