01 · Operator
Who operates SirdataBot
- Company
- Sirdata
- Type
- Other bot
- Official docs
- semantic-api.docs.sirdata.net
02 · Behavior
What SirdataBot does
The bot links to the documentation of Sirdata's Contextual API. Bot databases classify it as an advertising crawler. It likely reads page content to classify it for contextual ad targeting.
03 · Impact
Why SirdataBot matters for your site
If you allow it
- Contextual classification can help ads run on your pages
- You sell ad inventory through partners that use Sirdata
If you block it
- It brings no direct visitors
- You do not monetize with programmatic ads
04 · Allow
How to allow SirdataBot
robots.txt
User-agent: SirdataBot
Allow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "SirdataBot")
Action: Skip › All Super Bot Fight Mode rules
# Also check Security › Bots: "Block AI bots" can block it regardless of robots.txt.WordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: SirdataBot
Allow: /nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "SirdataBot") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} SirdataBot [NC]
# RewriteRule .* - [F,L]05 · Block
How to block SirdataBot
Start with robots.txt. If SirdataBot keeps showing up in your logs, block it at your CDN or web server.
robots.txt
User-agent: SirdataBot
Disallow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "SirdataBot")
Action: BlockWordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: SirdataBot
Disallow: /nginx
# In your server { } block:
if ($http_user_agent ~* "SirdataBot") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} SirdataBot [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for SirdataBot
The user agent published by the operator:
SirdataBot (+https://semantic-api.docs.sirdata.net/contextual-api/contextual-api/introduction)07 · Verification
Is it really SirdataBot?
SirdataBot’s operator publishes no IP ranges or hostnames, so requests cannot be verified. Treat the user agent as a claim, and watch your logs for unusual request rates.
FAQ
Questions about SirdataBot
Who operates SirdataBot?
SirdataBot is operated by Sirdata, a data solutions company founded in 2012 in Paris that serves media and advertising clients.
Why does SirdataBot visit my site?
It fetches pages for Sirdata's contextual API, which classifies web content for advertising.
Should I block SirdataBot?
If you sell programmatic ads, allowing it may help contextual targeting. Otherwise it offers little direct benefit.
Last reviewed Oct 8, 2026