Thank you to SpecterOps for supporting this research and to Sarah, Cody, and Daniel for proofreading and editing! Crossposted on the SpecterOps Blog.
TL;DR: You can use sleepy to automate common tasks when working with Sleep code.
Raphael Mudge created the embeddable scripting language, Sleep, in April 2002. Sleep was designed to extend Java applications and has been used in few projects; most notably Cobalt Strike.