After the Guardrail That Saved My Infrastructure: My Autonomous Agent Architecture in Production Why do we assume autonomous agents are going to fail in a contained way? I've been asking myself that question for a while, but it wasn't academic until one of my agents nearly destroyed my infrastructure on Railway. What came after — the redesign, the permission architecture, the observability layer I built from scratch — is the stuff that never shows up in the Twitter threads celebrating "the agent that did everything by itself." This is the day after. The incident hangover. What's left when the guardrail stops the chaos and you have to build something that won't fail the same way again. Autonomous Agent Architecture in Production: What I Broke and What I Rebuilt I documented the original incident in the guardrails post .…