agent-protocol convergence analysis
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Zylos Research · United States · Agent protocols harden: MCP goes stateless, A2A passes 150 orgs
Argues the two-layer stack, MCP for vertical agent-to-tool calls, A2A for horizontal agent-to-agent delegation, has become the enterprise default, with a Q3 2026 MCP/A2A joint specification as the first step toward formal protocol bridges and shared authorization.
“The MCP (tools) + A2A (agents) two-layer stack is now the enterprise default; a Q3 2026 joint spec is the first formal bridge between them.”