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Protocols
1 article tagged Protocols.
6 May 2026 · 3 min · QAI Labs engineering
MCP and A2A solve different problems, and most teams need one of them
Two protocols get compared as if they were alternatives. They sit at different layers, and the honest answer for most systems is that you need the tool layer and not the delegation layer.
Start with the constraint.
Most of these projects are shaped by what you cannot do rather than what you want. Data that cannot leave the estate, a model you cannot host with a third party, a decision somebody has to justify to a regulator. Tell us yours and we will say honestly whether we can work inside it.