Originally published on AIdeazz — cross-posted here with canonical link. I shipped a silent failure. My first production AI agent, a simple lead qualification bot for WhatsApp, passed all 27 unit tests. It handled happy paths, edge cases, even adversarial inputs designed to break prompt safety. The agent went live. Two days later, a client forwarded a screenshot: the bot had hallucinated a 15% discount on a product that didn't exist. Revenue impact: $0. But trust impact: significant. The r...