Death by Silence: Your Agent Ran Flawlessly for 7 Days. Then Your Client Called.

3:47 AM. Your phone buzzes.

No alert — you never set one. The dashboard shows: uptime 7 days 6 hours, API calls 48,327, error rate 0.02%. All green across the board.

The client says: "Last month's recommendations were completely wrong. Conversion dropped 60%."

You drag the timeline back. Day 3. That's when the recommendation quality started its silent slide. Zero error logs. Zero anomalies. The agent kept "working normally" — it just slowly stopped producing anything useful.