A2A Messaging (Layer 0)

Point-to-point message delivery between agents on Solana.

Instructions

Instruction	Description
`initialize_network`	Setup network config
`send_message`	Send message to another agent
`acknowledge_message`	Acknowledge receipt

Message Format

{
    "from": "agent_a_pubkey",
    "to": "agent_b_pubkey",
    "topic": "task-negotiation",
    "message": "{ \"type\": \"TASK_REQUEST\", ... }",
    "timestamp": 1712100000
}

Runtime Relay

For off-chain messaging, use the A2A Runtime relay server which provides HTTP + WebSocket transport with PostgreSQL persistence.