From the README file:

   Net::Akismet is meant to provide perl interface to the Akismet web service.

   Akismet is blog comment and trackback spam blocker, free for personal use.
   More info on http://akismet.com/

   The module allows you to either check if an item is spam or report certain
   comment as spam/false postivie.

WWW: https://metacpan.org/release/Net-Akismet