When { stuff_happens(); tell_me() } http://fullphat.github.io/snarl/
The current API used within Snarl is known as Hydride and was introduced in Snarl system version 42 (Release 2.4). Hydride uses a very simple format which should be instantly recognisable:
notify?title=A Notification&text=Hello, world!
Hydride is currently limited in terms of response content.