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10 Multi-Agent Systems

Phase 3 - Systems
Stage 10 of 14. Previous: Stage 9 - Building Agents. Next: Stage 11 - Evaluation and Observability.

Goal

Learn when and how to coordinate multiple agents without adding unnecessary complexity.

Learn

  • Supervisor-worker pattern
  • Handoffs
  • Agents as tools
  • Shared state vs message passing
  • A2A protocol
  • Coordination failure modes
  • How to tell when one agent is enough

Build

Build a small agent team with a planner, researcher, writer, and reviewer. Measure whether the team improves results compared with one agent.

Exit Criteria

  • You can explain MCP as agent-to-tool communication and A2A as agent-to-agent communication.
  • You can identify when a multi-agent system is unnecessary.
  • You can design handoffs with clear responsibilities.

Checkpoint

Use the Stage 10 checkpoint before moving on.