Thanks for the feedback, @FabioManganiello. The Trello web client uses websockets to remain synced and up-to-date with changes occurring in the backend, so it is something that we’re familiar with. Although it isn’t something that is officially supported nor documented it might be worth checking out what the Trello web client is doing and seeing if you can subscribe to the same websockets it is using.
I’ll pass this along to the team so that they know there is interest in a publicly available and supported websockets interface.