Peer-to-Peer AI: The Case for Decentralized Agent Networks

The dominant architecture for multi-agent AI systems in 2026 is centralised coordination. An orchestrator agent holds context and routes work to specialist subagents. The orchestrator is the hub; subagents are spokes. Communication flows through the application layer: HTTP calls, MCP tool invocations, A2A task delegations. This architecture is functional. It is also a significant constraint on what multi-agent systems can become. The centralised coordination model has a structural analog in the history of computing: the mainframe era.