V

VSE

http-library VSE\/

VSE crawler

About this crawler

VSE is a web crawler identified by the regular-expression pattern VSE\/ in the User-Agent request header. It is categorised as http-library. Use the regex above to detect, log, allow, or block VSE traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

0.065%
latest snapshot
2026-06-04
matched key: VSE Link Tester
2026-05-012026-06-040.11%

Technical details

Name
VSE
Pattern
VSE\/
Tags
http-library
Added
2026/05/09
Instances
1 known sample(s)

Sample User-Agent strings

VSE/1.0 ([email protected])

Block this crawler

robots.txt — disallow VSE:

User-agent: VSE Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} VSE\/ [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "VSE\\/") { return 403; }
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