Nate B. Jones: Three Protocols Now Form the Core Agent Stack — MCP for Tools, A2A for Delegation, AG-UI for Human Control

Nate's Newsletter·low signal

AI practitioner Nate B. Jones published a May 22 analysis noting that six agent protocols launched in a single year, but three have emerged as the core stack: MCP (Model Context Protocol) for tool access, A2A (Agent-to-Agent) for delegation between agents, and AG-UI for maintaining human control over agent actions. His newsletter argues this protocol consolidation marks the shift from experimental to production-grade agent infrastructure.