Why it matters

Comm shapes coordination. Understanding shapes design.

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The architecture

Message format: NL + structured.

Protocols: MCP + A2A + custom.

Semantics + pragmatics.

Multi-agent comm stackMessage formatNL + structuredProtocolsMCP + A2A + customSemanticsshared vocab + intentMCP for tools; A2A protocol for agent-to-agent; NL for flexibility
Multi-agent communication.
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How it works end to end

Speech acts (Searle).

FIPA-ACL heritage.

Modern: MCP + A2A + custom.