Checks / AI crawler access
robots.txt blocks ClaudeBot
Blocks ClaudeBot, which collects training data. This keeps your pages out of future model training, not out of ChatGPT or other AI search.
robots_claudebot · AI crawler access · Notice
What to change
Only if you want your pages in future model training: remove the Disallow rule for ClaudeBot. Search inclusion is governed by Claude-SearchBot.
Example
Lines that allow ClaudeBot in robots.txt:
User-agent: ClaudeBot
Allow: /How common it is
On a sample, the study measured robots.txt blocking ClaudeBot on the homepage's site: 10 of 294 Show HN sites (3%), and 0 of 67 Lovable sites (0%).
Fetched 20 and 21 Oct 2026 as CitedBot, robots.txt obeyed, no JavaScript. Study: Launch crawl 2026-10 (English).
About this check
| Check ID | robots_claudebot |
|---|---|
| Report section | AI crawler access |
| Severity | Notice |
| How it is decided | Measured: read directly from the page or the server's response. |
| Added | Before 19 Oct 2026 (versions 1 and 2), or a site-wide check with no version date yet |
| Status | Measured in every report |
| Report gives the code | Yes, one block for the site |
Settings by platform
For robots.txt, where the setting lives differs by platform. Our guides cover 13 of them: AI crawler settings by platform.
Related checks
- robots.txt blocks ChatGPT-User
- robots.txt blocks Claude-SearchBot
- robots.txt blocks Claude-User
- robots.txt blocks OAI-SearchBot
- robots.txt blocks Perplexity-User
- robots.txt blocks PerplexityBot
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