Monitoring Web Agents Without Internal Signals: Observable Trajectories and Key-Step Supervision
Reliable web-agent monitoring is difficult when model-internal uncertainty signals such as token logits are unavailable. In this work, we study prefix-level risk prediction for web agents using observable trajectory signals: given an evolving prefix, estimate whether the current execution remains on track or is tending...
Si-Tong Pan, Yi-Peng Shen, Yilin Lu et al.
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