A Verifier Can Leak the Answer: Diagnosability Before Optimization in Closed-Loop Agent Debugging
4.00T1 sourcearXiv cs.MA
Source record
Published by arXiv cs.MA (T1 source). The original is at https://arxiv.org/abs/2610.00126.
Pipeline notes
The summary and note below are generated by the signal pipeline — they are Beyond Desk’s reading, not quotations from the source.
SummaryPaper shows that verifiers comparing agent solvers can encode the target answer, making solver rankings vacuous. It proposes a support-gated verification contract—requiring repeated component exposure, comparable runtime evidence, and an independently calibrated detection rule before optimization—and reports pre-registered results across 1,440 heldout cases with quantified false-admission bounds.
Why it mattersNames a structural blind spot in agent debugger evaluation where stronger solvers merely certify leaky verifiers. The pre-registered design and concrete false-admission upper bound make it directly applicable to evaluation pipelines.
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