Agent Quality: From Black-Box Hopes to Glass-Box Trust A field manual for teams who build, ship, and sleep with AI Agents Article’s central question “How can we prove an AI Agent is ready for production when every run can behave differently?” Short answer: Stop judging only the final answer; log the entire decision trajectory, measure four pillars of quality, and spin the Agent Quality Flywheel. Why Classic QA Collapses in the Agent Era Core reader query: “My unit tests pass, staging looks fine—why am I still blindsided in prod?” Short answer: Agent failures are silent quality drifts, not hard exceptions, …