# StopLoss: Teaching Agents to Predict Failure and Stop Early > Source: > Published: 2026-10-20 17:30:45+00:00 Coding agents keep working on runs that will fail verification, and asking a frontier model to watch for this is expensive in its own right. We introduce StopLoss, a small external monitor that learns failure recognition from completed trajectories and their verifier outcomes. The name is inspired b