MONAI Label endpoints (server) support any interaction from viewers, plugins or modules. This means users can modify or create a more dynamic Slicer plugin that better works for their own App. They can add scribbles, ROIS or closed curves interactions that later can be sent to the server. An example of this can be shown in the following image:

Endpoints in MONAI Label are designed to receive and send binary files, CSV files, masks, MRML nodes etc. This allows users to create their own interactions on the client side. The following image shows some of the available calls that users can utilise for their own cases.

This is the current infer REST API call:

Please refer to this issue for a recent use case on creating a new App.