protocols
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Guides
MCP vs A2A vs ACP: Which Agent Protocol Wins in 2026
MCP, A2A, and ACP compared on architecture, adoption, and real trade-offs. Covers the ACP-A2A merger and when to use each protocol.
signals
The Protocol Wars Nobody's Winning
Ten competing agent protocols and counting. MCP won the tool layer but shipped without authentication. The alphabet soup is a coordination failure.