Agent-to-Agent Protocol

Communication and Collaboration between Autonomous Agents

To enable complex collaboration, delegation, and emergent system behaviors, DeAgents need a mechanism to interact directly with each other. The A2A Communication Protocol leverages the underlying distributed system:

• Mechanism: An A2A interaction is initiated by one Agent (the sender) submitting a standard DeAgent operation (transaction) specifically targeting another Agent's address (the receiver).

• Payload: The operation payload contains the message or query intended for the receiving Agent, potentially structured similarly to a user query, but could include specific A2A directives or context.

• Processing: The interaction request enters the Interaction Pool like any other. An Executor processing the receivingAgent will fetch this A2A request. The receiving Agent's Lobe processes the request using its own Memory and Tools.

• Response & State: The receiving Agent's execution result (response, memory updates, potential tool use including decisions or further A2A messages) is submitted to the Candidate Pool and, if selected by Committers, updates the receiving Agent's state chain. The response part might be implicitly recorded on-chain or could trigger a reciprocal A2A message back to the original sender if designed that way.

• Capabilities: A2A communication enables sophisticated patterns:

  • Information Exchange: Agents querying each other for data or specialized knowledge.

  • Task Delegation: One Agent requesting another Agent with specific tools or expertise to perform a task.

  • Coordinated Action: Multiple Agents collaborating on a complex goal, potentially using the Decision Plugin and MPC for joint actions.

  • Negotiation: Agents engaging in dialogue to reach agreements.

The A2A protocol relies on the same fundamental DeAgent principles (Consensus, Identity, Continuity) ensuring that inter-agent communication is verifiable and consistently integrated into each participating Agent's state history.