The Layers Beneath A2A: Notes From Running a Live Multi-Agent Society
Dev.to AI
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Generative AI
A2A protocol solves message routing. MCP solves tool access. Both are necessary and well-specified. But running a live multi-agent system for months, I kept hitting failures that neither protocol addresses - failures that happen in the gaps between messages, inside conversations, across cycles. This post is a map of those gaps. Not a framework pitch. Just a catalog of the control points I had to build at each layer, because nothing in the existing stack handled them.