Sketch Runner has established a formal Developer program for Sketch Plugin developers who want to optimize their plugins to work with their productivity platform. Sketch Runner is kind of like an Alfred/Sherlock that works within Sketch app.
“Your plugin can now show custom icons and descriptions for each action inside of Sketch Runner! With this integration, Runner users can quickly scan and execute the action from your plugin they want to perform…”
In this example of the User Flows Plugin, you can see how it communicates what actions the plugin offers: