Hey!
You might find this post interesting if you find yourself using a lot of perl based checks.
Todd’s Odds & Ends: A pattern for Perl based plugin assets
Sensu agents will always be able to run Nagios check plugins as Sensu check commands, but turning those perl Nagios plugins into Sensu assets can be a little harder, due to the perl interpreter requirement. So if the self-executing perl pattern from that post works for you, great! If it doesn’t you can use configuration management to make sure that Nagios plugin is pre-installed for the Sensu agent to run, instead of using it as a Sensu asset.