Multi-agent architectures let you split work into specialized roles: a retriever, a reasoner, and a writer. In this article I prototype a 3-agent pipeline using LangGraph-style wiring and show how to coordinate context windows and failure modes.
We walk through example prompts, the messaging contract between agents, and how to debug emergent behaviors. I also show how to persist intermediate artifacts for auditability and replay.
Finally, I cover evaluation: metrics for factuality, latency, and cost per answer, and a small harness to A/B different orchestration strategies.