SmartThings Routines being discontinued

I was wondering the same thing.  Any new users of Smarthings will need to be able to add scenes to AT or will lose a lot of functionality.  We current users will need scenes also when the app is fazed out.

There is indeed a REST API, so if you want to activate a Scene from ActionTiles you can do so, there just isn't any native support at the moment. I don't need to run any scenes at the moment but I know if I want to I can just use a URL Shortcut with a URL like:

javascript:$.ajax({type: 'POST', url: 'https://api.smartthings.com/scenes/<Scene UUID>/execute', headers: { 'Authorization': 'Bearer <Auth UUID>'}});

I'd imagine with ActionTiles, it is a matter of waiting for the waters to clear a bit. There is a V1 REST API but is there a V1.1 or a V2.0 round the corner that will significantly change things? Is the REST API even the way forward?

Is there any news about using scenes from the new app? It's unreasonable not to have this function.

No native support released in ActionTiles yet, but there are various solutions available to do the job while waiting :

• Create a virtual switch and an automation in the new app that executes the scene when the switch is toggled. Use the switch in ActionTiles with settings to make it look the same when on or off, so it appears like a button.
• Use a URL Shortcut in ActionTiles that executes the Scene using the REST API. Again it will work like a button.
• Use a Momentary in ActionTiles along with a custom device handler that executes the Scene using the REST API.
• Use an iframe tile to load up a custom 'button' to execute the Scene.

This article describes a method to add Scenes to ActionTiles:

https://support.actiontiles.com/knowledge-bases/8/articles/8740-how-to-use-new-smartthings-scenes-with-actiontiles