ResearchResearch paperAgents & Tool Use · Reinforcement Learning · Safety & Alignment1 source · Oct 19, 2026

Claim Laundering: When Agent Decision Models Trust Records Over Reality

Agent decision models select actions in a single forward pass from inputs that combine environmental observations with the agent's own record of previous actions.

Key points

  • When an action fails silently, these sources can conflict: the record reports success, but the environment shows that the step did not take effect.
  • Across Android screen traces, ALFWorld, and WebShop, we construct paired states that independently vary the observation, the logged action, and an explicit success claim.
  • Under injected silent failures, EVIGATE improves task success by 18.7 points in live ALFWorld agents, 5.0 in WebShop, and 5.1 in a phone simulator, and in WebShop and the simulator it also outperforms random vetoes at the same rate.
  • Its effectiveness depends on representative calibration states: gates calibrated on offline counterfactual states do not transfer reliably to live agent trajectories.

Sources (1)

  • [1]Claim Laundering: When Agent Decision Models Trust Records Over Reality
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 19, 07:40 AM
    Agent decision models select actions in a single forward pass from inputs that combine environmental observations with the agent's own record of previous actions.
    When an action fails silently, these sources can conflict: the record reports success, but the environment shows that the step did not take effect.

Extractive summary: sentences quoted from the sources.

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