Which websites block Claude-SearchBot?
23 of 244 popular sites we measured block Claude-SearchBot (9.4%), checked 2026-10-01.
Claude-SearchBot is Anthropic’s crawler for search discovery crawler (Claude search). It fetches pages so an answer can cite them, so blocking it removes a site from those answers as a live source. More about Claude-SearchBot.
The robots.txt rule
To block it:
User-agent: Claude-SearchBot Disallow: /
To allow it explicitly:
User-agent: Claude-SearchBot Allow: /
A server or CDN can still refuse the crawler when robots.txt allows it. That is why the checker fetches as the crawler as well as reading the file.
Sites that block Claude-SearchBot
| Site | How |
|---|---|
| msn.com | robots.txt disallow |
| facebook.com | robots.txt disallow |
| fbcdn.net | robots.txt disallow |
| amazon.com | robots.txt disallow |
| instagram.com | robots.txt disallow |
| skybridge.click | robots.txt disallow |
| creativecdn.com | robots.txt disallow |
| twitter.com | robots.txt disallow |
| pinterest.com | robots.txt disallow |
| reddit.com | robots.txt disallow |
| sharethrough.com | robots.txt disallow |
| amazon.co.za | robots.txt disallow |
| netcraze.io | robots.txt disallow |
| juicyscore.com | robots.txt disallow |
| pinimg.com | robots.txt disallow |
| blismedia.com | refused at the server |
| t.co | robots.txt disallow |
| x.com | robots.txt disallow |
| wp.com | refused at the server |
| meraki.com | robots.txt disallow |
| ad-score.com | robots.txt disallow |
| storygize.net | robots.txt disallow |
| starttest.com | robots.txt disallow |
Check your own site
The free checker runs the same probe on any URL: robots.txt resolved for every AI crawler, then a live fetch as each one, so a CDN or firewall block shows up even when robots.txt looks fine.
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Other crawlers
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- Sites that block ChatGPT-User
- Sites that block ClaudeBot
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