AI RESEARCH
PrefixGuard: From LLM-Agent Traces to Online Failure-Warning Monitors
arXiv CS.AI
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ArXi:2605.06455v1 Announce Type: new Large language model (LLM) agents now execute long, tool-using tasks where final outcome checks can arrive too late for intervention. Online warning requires lightweight prefix monitors over heterogeneous traces, but hand-authored event schemas are brittle and deployment-time LLM judging is costly. We