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DebugBear
DebugBear performance monitoring
About this crawler
DebugBear is a web crawler identified by the regular-expression pattern DebugBear in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block DebugBear traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
No block-rate data for this crawler.
Technical details
- Name
- DebugBear
- Pattern
DebugBear- Tags
- monitoring
- Added
- 2026/05/09
- Instances
- 2 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (Linux; Android 11.0; moto g power (2022)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Mobile Safari/537.36 DebugBear
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 DebugBear
Block this crawler
robots.txt — disallow DebugBear:
User-agent: DebugBear
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} DebugBear [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "DebugBear") {
return 403;
}
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