A technical walkthrough for BTP developers: SAP CAP + SAP Cloud SDK for AI + an agent framework, exposed to Joule via the Agent2Agent (A2A) protocol. Joule Studio covers a lot of ground, but some agents need full programmatic control: custom state machines, complex tool chains, specialised models or partner IP you want to reuse across customers. SAP's reference architecture for these cases is clear — build a pro-code agent on SAP BTP and integrate it with Joule using A2A, an