Developer’s Guide to AI Agent Protocols
SMRTR summary
Six AI agent protocols (MCP, A2A, UCP, AP2, A2UI, AG-UI) eliminate custom integration code by standardizing how agents connect to data, communicate with other agents, handle commerce, authorize payments, render interfaces, and stream interactions. A restaurant supply chain agent demonstrates these protocols working together to automatically check inventory, get supplier quotes, place orders, and display interactive dashboards.
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