01 · Operator
Who operates contxbot
02 · Behavior
What contxbot does
contxbot processes and indexes webpage content to understand a site's topics and context. That context is used to deliver relevant ads. Known Agents classes it as an intelligence gatherer for ad targeting.
03 · Impact
Why contxbot matters for your site
If you allow it
- Helps ads on your pages match your content
- May support contextual ad revenue
If you block it
- Brings no search visibility
- Adds crawl load without direct benefit
04 · Allow
How to allow contxbot
robots.txt
User-agent: contxbot
Allow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "contxbot")
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: contxbot
Allow: /nginx
# nginx serves every user agent by default.
# Make sure no rule like this blocks it:
# if ($http_user_agent ~* "contxbot") { return 403; }Apache
# Apache serves every user agent by default.
# Make sure .htaccess has no rule like this:
# RewriteCond %{HTTP_USER_AGENT} contxbot [NC]
# RewriteRule .* - [F,L]05 · Block
How to block contxbot
Start with robots.txt. If contxbot keeps showing up in your logs, block it at your CDN or web server.
robots.txt
User-agent: contxbot
Disallow: /Cloudflare
# Security › WAF › Custom rules › Create rule
Expression: (http.user_agent contains "contxbot")
Action: BlockWordPress
# WordPress serves a virtual robots.txt. Edit it with your SEO plugin:
# Yoast: SEO › Tools › File editor · Rank Math: General Settings › Edit robots.txt
User-agent: contxbot
Disallow: /nginx
# In your server { } block:
if ($http_user_agent ~* "contxbot") {
return 403;
}Apache
# .htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} contxbot [NC]
RewriteRule .* - [F,L]
</IfModule>06 · User agents
User agents we see for contxbot
The user agent published by the operator:
Mozilla/5.0 (compatible;contxbot/1.0)07 · Verification
Is it really contxbot?
contxbot’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 contxbot
Who runs contxbot?
Known Agents attributes contxbot to Amazon. Amazon has no public documentation page for it that we found.
How do I block contxbot?
Add 'User-agent: contxbot' with 'Disallow: /' to your robots.txt.
Last reviewed Oct 7, 2026