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Once you have multiple agents, the challenge shifts from "what can each agent do?" to "how do agents work together effectively?" This lesson covers message passing patterns, shared blackboards, handoff protocols, conflict resolution, and structured inter-agent communication.
In a multi-agent system, agents must:
The simplest coordination mechanism: agents send structured messages to each other.
from dataclasses import dataclass, field
from datetime import datetime
from typing import Any
@dataclass
class AgentMessage:
sender: str
recipient: str
message_type: str # "request", "response", "inform", "handoff"
content: str
metadata: dict[str, Any] = field(default_factory=dict)
timestamp: str = field(default_factory=lambda: datetime.now().isoformat())
class MessageBus:
"""Central message bus for agent communication."""
def __init__(self):
self.queues: dict[str, list[AgentMessage]] = {}
self.log: list[AgentMessage] = []
def register_agent(self, agent_name: str):
self.queues[agent_name] = []
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