Inter-Agent Communication Protocols: Building Connected Systems

Multi-agent systems require robust communication protocols. Agents must exchange information, coordinate actions, and maintain consistency. This guide explores message formats, communication patterns, and protocols for building connected agent systems.

Message Format

{
  "id": "msg_12345",
  "from": "sales_agent",
  "to": "analytics_agent",
  "type": "request",
  "timestamp": "2025-01-22T10:30:00Z",
  "payload": {
    "action": "analyze_leads",
    "parameters": {
      "timeframe": "last_7_days",
      "min_score": 80
    }
  },
  "reply_to": null,
  "priority": "normal"
}

Communication Patterns

Event Bus Architecture

Message Reliability

Ensure messages aren't lost:

Coordination Protocols

• • Leader Election: One agent coordinates others
• • Consensus: Agents agree on decisions together
• • Distributed Locks: Prevent concurrent conflicting actions
• • Event Sourcing: Store all changes as events

Conclusion

Robust communication protocols are the foundation of multi-agent systems. Choose patterns that match your reliability needs, implement proper error handling, and design for loose coupling to build scalable agent networks.