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abstract indexed · arXiv 2610.18579 · updated 2026-10-18

Reading Right, Acting Wrong: Diagnosing Decision Failures of System One Models in Agent Loops

First page of Reading Right, Acting Wrong: Diagnosing Decision Failures of System One Models in Agent Loops
From the original paper · arXiv 2610.18579Page 1. Select the image to read the PDF.

The method replaces uninterpretable single-pass action scoring with behavioral diagnostics: each next-action decision is paired with independent factual probes about the same state, separating perception failures from decision failures and enabling a repair path where the model's own correct factual answers are composed by code to fix the action. It costs additional probe queries per decision state, benchmark construction effort, and code to compose answers, adding latency and engineering complexity to the evaluation loop. It can fail when the diagnosis relies on synthetic probes that do not transfer to production states, and the abstract notes that on real states the missing element is often the next sub-goal, which factual probing and code composition may not supply.

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  1. Locate the paper's implementation and check its license, model support, data needs, and hardware requirements. Stop here if you cannot obtain the required artifacts.
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  3. Run the baseline and the proposed change on identical inputs. Keep other settings fixed and repeat paired runs to expose variation.
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What to measure

Agreement with human review, missed failures, false alarms, and evaluation cost per task.

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source-linked claims
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Why it was shortlisted

The technical change, research area, and reason it entered the archive.

recommendation
test
research area
agent evaluation
technical change
Paired factual probes to diagnose agent action errors
published
2026-10-13

The diagnostic is cheap and compatible with API-based models, but its repair benefit and probe design must be validated on the reader's specific agent workloads before production adoption.

About the technical core

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Claims and evidence

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  1. claim 01Paperraft inference
    Read the brief interpretation

    The method replaces uninterpretable single-pass action scoring with behavioral diagnostics: each next-action decision is paired with independent factual probes about the same state, separating perception failures from decision failures and enabling a repair path where the model's own correct factual answers are composed by code to fix the action. It costs additional probe queries per decision state, benchmark construction effort, and code to compose answers, adding latency and engineering complexity to the evaluation loop. It can fail when the diagnosis relies on synthetic probes that do not transfer to production states, and the abstract notes that on real states the missing element is often the next sub-goal, which factual probing and code composition may not supply.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

    Inspect the source
  2. claim 02Paperraft inference

    Across seventeen fast systems and one reasoning model, most wrong actions follow correct reading of state, and accuracy gains increase the share of such decision-side errors; where probed facts provably determine the action, code-composed reuse of the model's own factual answers repairs the failure.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

    Inspect the source

Exposure map

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quality

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compute and memory

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latency

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operations

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software compatibility

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security

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data and training

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What data preparation or training is required, and is it included in the cost?

reproducibility

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Continue the investigation

A reading guide for agent evaluation.

Editorial prompts, not findings from this paper or a validated test plan. Detailed analysis is still pending for the topics below.

What to inspect

Who grades the outputs? Inspect the rubric, disagreements, and whether the evaluator sees the method's identity.

Plan a fair comparison

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Questions for adoption

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Inside the paper

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Provisional research brief updated 2026-10-18. Paperraft has not reproduced this experiment.

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arXiv 2610.18579

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