Anchor Browser
Anchor's cloud-hosted browser for AI agents
About this crawler
Anchor Browser is a web crawler identified by the regular-expression pattern Anchor Browser in the User-Agent request header. It is categorised as browser-automation. Use the regex above to detect, log, allow, or block Anchor Browser traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- Anchor Browser
- Pattern
Anchor Browser- Tags
- browser-automation
- Reference
- https://knownagents.com/agents/anchor-browser
- Added
- 2026/04/26
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (compatible; Anchor Browser; +https://anchorbrowser.io/)
Block this crawler
robots.txt — disallow Anchor Browser:
User-agent: Anchor Browser
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Anchor Browser [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Anchor Browser") {
return 403;
}
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