The growing landscape of AI agent development is overloaded with acronyms: MCP, A2A, UCP, AP2, A2UI, and AG-UI, just to name a few. If you’ve ever looked at this list of protocols and felt like you were staring at a wall of competing standards, you are not alone. To help you understand their value, we are going to demonstrate what each one does to save you from writing and maintaining custom integration code for every single tool, API, and frontend component your agent touches.

We will put these protocols into practice by using Agent Development Kit (ADK) to build a multi-step supply chain agent for a restaurant. This scenario works well as a test case because ordering wholesale ingredients requires checking inventory databases, communicating with remote supplier agents, executing secure transactions, and rendering interactive dashboards. — Read More