Slack_SSB
Slack link preview bot
About this crawler
Slack_SSB is a web crawler identified by the regular-expression pattern Slack_SSB in the User-Agent request header. It is categorised as social-preview. Use the regex above to detect, log, allow, or block Slack_SSB 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
- Slack_SSB
- Pattern
Slack_SSB- Tags
- social-preview
- Reference
- https://api.slack.com/robots
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Slack/1.2.6 Chrome/45.0.2454.85 AtomShell/0.34.3 Safari/537.36 Slack_SSB/1.2.6
Block this crawler
robots.txt — disallow Slack_SSB:
User-agent: Slack_SSB
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Slack_SSB [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Slack_SSB") {
return 403;
}
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