`ClaudeBot`

Anthropic says ClaudeBot collects public web content that may be used to train generative models. Restricting it signals that the site's future material should be left out of those training sets. The article says Anthropic's bots honor robots.txt, including a non-standard Crawl-delay.

robots.txt token: ClaudeBot
Operator: Anthropic
Kind: training
robots.txt: disallow_is_opt_out. The vendor says disallowing this token opts that use out.
HTTP user-agent: The cited help article names the robots.txt token and does not publish a full HTTP user-agent string. Botcard leaves that field empty.
IP list: https://claude.com/crawling/bots.json The article points here for Anthropic crawler IPs. URL returned HTTP 200 on 2026-10-17. Botcard does not copy the address list.
Source: Does Anthropic crawl data from the web, and how can site owners block the crawler?. Retrieved 2026-10-17.

JSON

curl -s https://whosthatbot.com/v1/crawlers/claudebot

Check this token

tools/call with name check_robots is the same check at POST /mcp. The pasted file disallows ClaudeBot on /docs and allows *. The call does not fetch a host.

curl -s https://whosthatbot.com/mcp -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"check_robots","arguments":{"robots_txt":"User-agent: ClaudeBot\nDisallow: /\n\nUser-agent: *\nAllow: /\n","path":"/docs","ids":["claudebot"]}}}'

That call returns fetched_target false. This row is disallow via group ClaudeBot, rule Disallow: /.