To enable Poison Fountain for Apache on RHEL/CentOS, copy the poison_fountain.conf file in this gist
to /etc/httpd/conf.d/poison_fountain.conf
(if you've already configured mod_proxy then omit the two LoadModule lines).
Then tell SELinux that apache is allowed to make outbound http requests by running:
setsebool -P httpd_can_network_connect on
Then restart apache:
systemctl restart httpd
Now any URL under /xyz/ on your domain, e.g. https://example.com/xyz/foo,
will serve up pages from the poison fountain.
So you can add links to your HTML pages that point to it, like:
<a href="/xyz/example">Simple example showing how it works</a>
And when AI bots crawl your site and follow that URL, they'll drink from the fountain.