Let me describe a situation you've either been in or are about to be in. You've built a multi-agent system. It works. The orchestrator dispatches tasks to specialist agents, they call external APIs, things happen. You ship it. Then, three weeks later, you discover that your payment agent processed: a $4,200 refund at 1:47am on a Saturday with no approval; that a customer's data was accessed by an agent that technically shouldn't have had that scope; and that you have absolutely zero logs to figure out what triggered any of it. This is not a hypothetical. It's the default outcome if you ship agents without thinking about the three infrastructure layers that make them safe to run in production. Here's what those layers are, and how they fit together. Layer 1: Conduit — see the whole pipeline The operational problem hits first. You're managing agents that connect to MCP servers, call LLMs, trigger webhooks, and chain into each other.…