arXiv Machine Learning

Post-Audit Mirage: Identifiability Limits of Offline Agent Verification

The paper introduces the concept of a "Post‑Audit Mirage," showing that offline tests can fail to detect whether an agent update will remain safe once deployed. It formalizes this limitation using matched safe and harmful lifecycles that produce identical evidence to a verifier while an isolated scorer observes opposite outcomes, and presents a theorem describing the trade‑off between error and abstention. The authors also propose a benchmark and a tool called IdentifiedRangeMonitor that attempts to recover the missing distinction in certain settings, but notes that monitoring may still be undecided for rare groups, small effects, or missing observations.

Hugging Face Trending Papers
Oct 22

Post-Audit Mirage: Identifiability Limits of Offline Agent Verification

The paper introduces the Post‑Audit Mirage, a framework showing that offline tests may not detect whether an agent update remains safe after deployment. It defines a benchmark that uses matched safe and harmful lifecycles to expose identical verifier‑visible evidence while an isolated scorer records opposite deployment truth, and presents a theorem on the error‑abstention tradeoff using observational equivalence. The IdentifiedRangeMonitor tool applies fresh group‑labelled harm outcomes to decide whether to deploy, hold, or remain uncertain, and experiments demonstrate that monitoring can recover missing distinctions in favorable settings but may stay undecided for rare groups or small effects.

arXiv AI
Aug 14

Auditable Agents

arXiv:2604. 05485v2 Announce Type: replace Abstract: LLM agents call tools, query databases, delegate tasks, and trigger external side effects.

By Yi Nian, Aojie Yuan, Haiyue Zhang, Jiate Li, Li Li, Xiyang Hu, Hua Wei, Xiongye Xiao, Chaowei Xiao, Yue Zhao
arXiv AI
Sep 3

ClaimReceipt: Verifying Evidence Sufficiency and Coverage in Agent Evaluations

The paper introduces ClaimReceipt, a specification and verifier that checks whether a claim in an agent evaluation can be recomputed from retained evidence (sufficiency) and whether the evidence covers the entire experiment set (coverage). Using the CR‑2 verifier on 1,392 historical records, the authors demonstrate accurate reproduction of audit verdicts, non‑redundant field groups, and zero false positives on semantic faults. In a prospective CR‑3 run, the system correctly flags missing receipts and preserves coverage when private evidence is withheld, while adding minimal overhead to inference time and transaction size.

By Peiying Zhu, Sidi Chang
arXiv AI
Oct 2

Actions with Receipts: Jointly Binding Claims, Evidence, and Execution for Replayable Tool-Agent Auditing

The paper introduces a claim‑anchored execution contract that binds a tool‑using agent’s emitted claim to its exact source span, the ordered execution prefix that produced it, and the source version and access state observed. Each receipt contains deterministic anchors, source identifiers, offsets, hashes, quotes, and a domain‑separated execution commitment, allowing a verifier to reconstruct these bindings before semantic or task labels are joined. The contract defines seven independently testable properties and demonstrates high detection rates against cross‑object attacks, with strong performance on conflict‑aware support guard evaluations.

By Miaobo Hu, Shuhao Hu, Xiaobo Guo, Xin Wang, Bokun Wang, Yina Sa, Daren Zha, Jun Xiao
arXiv AI
Oct 19

Monitor-Validity Failures: LLM Safety Evidence Paths at Evolving Framework Boundaries

The paper investigates failures in large language model (LLM) safety systems where runtime monitors detect policy‑relevant evidence but the evidence never reaches the enforcement decision point. Using canary contracts, the authors identified 18 evidence‑path failures across 11 safety projects and four ecosystems, categorizing them into established‑boundary repairs, new‑surface policy gaps, and boundary‑only evidence cases. The study demonstrates that ordinary application behavior can continue while safety‑specific evidence is lost, highlighting the need for regression tests on evolving monitor schemas, streams, tools, and adapters.

By Junchi Liao