nodecg-utility-obs is a NodeCG utility that adds a set of Replicants, Messages, and other hooks to your NodeCG bundle. It is meant for use with NodeCG v0.9. You can think of it like a mixin for your NodeCG bundle.
It requires that the instance of OBS have obs-websocket installed and configured.
Internally, it uses obs-websocket-js to communicate with obs-websocket.
$ npm install --save nodecg-utility-obs
For full documentation, see nodecg-obs