The original title is "Multi-Agent Coordination: Message-Bus Patterns That Keep Agents Sane"

Short summary

Multi-agent success depends on architecture, not models. Message-bus patterns with supervisor coordination keep costs down and prevent cascading errors, while handoff patterns lose context and grow transcript costs. Budget enforcement (cost and step limits) must travel with every message to prevent runaway costs across distributed agents.

• •Handoff patterns lose context and scale transcripts linearly; message buses with supervisors safely parallelize independent work.
• •Budget constraints (cost_so_far_usd, step_budget_remaining) must envelope every message to prevent runaway costs in distributed multi-agent systems.
• •Workers return typed artifacts validated against schemas, not prose, preventing 17× error amplification in multi-agent chains.

Generated with AI, which can make mistakes.