Thinkbot
Experimental AI thinking and reasoning web crawler bot
About this crawler
Thinkbot is a web crawler identified by the regular-expression pattern Thinkbot in the User-Agent request header. It is categorised as ai-crawler. Use the regex above to detect, log, allow, or block Thinkbot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.46%
Technical details
- Name
- Thinkbot
- Pattern
Thinkbot- Tags
- ai-crawler
- Reference
- https://boston.conman.org/2025/08/21.1
- Added
- 2026/04/26
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (compatible; Thinkbot/0.5.8; +In_the_test_phase,_if_the_Thinkbot_brings_you_trouble,_please_block_its_IP_address._Thank_you.)
Block this crawler
robots.txt — disallow Thinkbot:
User-agent: Thinkbot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Thinkbot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Thinkbot") {
return 403;
}
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