Drift Detection on Programmer.ie: Modern AI programming http://programmer.ie/tags/drift-detection/ Recent content in Drift Detection on Programmer.ie: Modern AI programming Hugo en-us Sun, 09 Aug 2026 12:00:00 +0100 Advanced Agents From First Principles 23: Your Infrastructure Is Healthy. Why Is the Agent Getting Worse? Detect Behavioral Drift and Roll Back Safely http://programmer.ie/post/advanced-agents-from-first-principles-23/ Sun, 09 Aug 2026 12:00:00 +0100 http://programmer.ie/post/advanced-agents-from-first-principles-23/ <h1 id="your-infrastructure-is-healthy-why-is-the-agent-getting-worse">Your Infrastructure Is Healthy. Why Is the Agent Getting Worse?</h1> <p>Your dashboards are green.</p> <p>The model endpoint is responding.</p> <p>The browser workers are alive.</p> <p>The database is healthy.</p> <p>The queue is draining.</p> <p>The verifier service is up.</p> <p>Latency has not exploded.</p> <p>There are no obvious exceptions.</p> <p>And yet the agent is getting worse.</p> <p>It fixes fewer bugs.</p> <p>It retrieves weaker evidence.</p> <p>It escalates to expensive models more often.</p> <p>It chooses the wrong tools more frequently.</p>