Is it me or does it communicate directly with providers sometimes ?

No - I don't believe there is any path for direct communication between the resource providers and language providers. All communication is to/from the engine.

Thanks Luke, I'm asking because of the dynamic-provider implementation inside nodejs/cmd

Ahh - yes - dynamic providers are a very special case here. @microscopic-florist-22719 can talk all about that!

very interested 🙂