How I Run 10 AI Agents in Production (24/7 for 90+ Days)

Everyone builds demo agents. They work great in the terminal. You show them to your coworker, they say "wow." You feel like a genius for about forty-five minutes. Then you try to run them for real users, overnight, without you watching. That is when things get educational. I have been running AI agents in production for six months now — customer service bots, data analysts, internal tools, monitoring daemons. Ten agents, running 24/7, serving actual humans. The first three months were a disaster. The last three have been stable enough that I sleep through the night. This article is the difference between those two periods. Four patterns that took my setup from "demo that breaks" to "system that runs itself." Everything here is concrete and based on mistakes I actually made. Code blocks are real. Steal all of it. The 5 Walls I Hit Before the solutions, the problems. If any of these sound familiar, the patterns below will help. 1. The 2am Hallucination My customer service agent started r