{"id":"4f22b992-87bd-441e-b81f-bc6c90dd0de3","arxiv_id":"2605.00424","paper_version":2,"verdict":"UNVERDICTED","confidence":"LOW","novelty_score":4.0,"correctness_risk":"unknown","formal_verification":"none","parameter_count":0,"one_line_summary":"Proposes a trust schema including verification levels and a biconditional correctness criterion to verify skills in human-in-the-loop agent runtimes, reducing the need for constant oversight.","lead":"This paper argues that agent skills must be treated as untrusted code requiring explicit verification before use in runtimes. A smart generalist might read it to learn about frameworks that could make AI agent systems more secure and operationally feasible at scale.","discovery_kind":"new_method","skeptic_critique":{"model":"grok-4.3","headline":"Biconditional correctness criterion for verification lacks any exhibited procedure that satisfies it on adversarial ensembles","rationale":"The reader's weakest assumption directly identifies the same gap. The paper's contribution is the schema, the criterion, and the runtime profile; the load-bearing step (existence of a procedure meeting the criterion) remains open. This moves the verdict from UNVERDICTED to CONDITIONAL pending demonstration that the criterion is satisfiable.","tokens_in":1807,"tokens_out":301,"duration_ms":28027,"concrete_test":"Exhibit or construct one verification procedure and run it on the adversarial-ensemble exercise defined in the paper; check both directions of the biconditional (verified skills pass all tests and unverified skills fail at least one). If no procedure meets both directions, the criterion is not yet shown to be usable.","verdict_should_be":"CONDITIONAL","load_bearing_attack":"The central thesis requires that verification (not signatures or origin) be the gate that safely reduces HITL to only unverified skills. The paper defines a trust schema with explicit verification levels and a biconditional correctness criterion that any verification procedure must meet on an adversarial-ensemble exercise. No concrete verification procedure, proof of satisfiability, or evaluation against that exercise is supplied; the reference implementation is cited only for the ten normative runtime guidelines. Without evidence that the criterion is achievable, the claim that verification enables sustainable HITL reduces to an untested assumption.","agreement_with_reader":"agree"},"referee_report":{"model":"grok-4.3","summary":"The manuscript argues that agent skills—structured packages of instructions and scripts for LLMs—must be treated as untrusted code until verified by the runtime. It introduces a trust schema with explicit verification levels on skill manifests, a capability gate whose human-in-the-loop (HITL) policy depends on those levels, a biconditional correctness criterion that any verification procedure must satisfy on adversarial-ensemble exercises, and ten normative guidelines for a portable runtime profile derived from an open-source reference implementation. The central claim is that this approach makes HITL sustainable by restricting interventions to unverified skills rather than requiring them on every irreversible action.","tokens_in":1927,"tokens_out":610,"duration_ms":35786,"significance":"If a practical verification procedure satisfying the biconditional criterion can be shown to exist, the framework would provide a principled separation between verification and other trust signals such as signatures or origin registries. This could meaningfully reduce operational overhead in agent deployments while improving security posture. The grounding in a working reference implementation and the model-agnostic stance are positive features that distinguish the proposal from purely theoretical treatments.","major_comments":[{"comment":"Abstract and the section defining the biconditional correctness criterion: the central thesis requires that verification procedures exist which satisfy the biconditional criterion on adversarial-ensemble exercises, thereby allowing the capability gate to restrict HITL to unverified skills only. No concrete procedure, proof of satisfiability, or evaluation against the adversarial ensemble is supplied; the reference implementation is referenced solely for the ten runtime guidelines. This leaves the claim that verification enables sustainable HITL as an untested assumption and is load-bearing for the paper's contribution.","section":"Abstract / Biconditional Correctness Criterion"},{"comment":"Section on the trust schema and capability gate: the HITL policy is defined as a function of the verification level, yet no formal semantics, decision procedure, or example policy table is provided to show how the gate would behave under the biconditional criterion. Without this, it is unclear whether the schema can be implemented without reintroducing the rubber-stamping problem it seeks to avoid.","section":"Trust Schema and Capability Gate"}],"minor_comments":[{"comment":"The abstract introduces several new terms (verification level, capability gate, biconditional correctness criterion) in rapid succession; a summary table or diagram relating these components would improve readability.","section":null},{"comment":"The ten normative guidelines are presented as abstracted from the reference implementation; including a brief mapping or excerpt from the implementation for at least two guidelines would help readers assess their practicality.","section":"Portable Runtime Profile"}],"recommendation":"major_revision","confidential_remarks":"The manuscript is primarily conceptual and may align better with a workshop or position-paper track than a full archival article, given the absence of any evaluation or satisfiability argument for the key criterion."},"author_rebuttal":{"model":"grok-4.3","summary":"We thank the referee for the careful reading and constructive critique of the manuscript. We respond to each major comment below, indicating planned revisions where appropriate.","responses":[{"response":"We agree that the manuscript does not present a concrete verification procedure, a proof that the biconditional criterion is satisfiable, or an empirical evaluation on an adversarial ensemble. The paper's contribution is the definition of the criterion that any verification procedure must meet, the trust schema that records verification levels, and the ten normative guidelines for a portable runtime profile derived from the reference implementation. We do not claim to have constructed or validated a specific procedure; rather, we argue that separating verification from other trust signals is a prerequisite for sustainable HITL. To address the concern, we will revise the abstract and the relevant section to state explicitly that the framework assumes the existence of procedures satisfying the criterion and will add a short discussion of candidate directions for constructing such procedures as future work.","revision_made":"partial","referee_comment":"[Abstract / Biconditional Correctness Criterion] Abstract and the section defining the biconditional correctness criterion: the central thesis requires that verification procedures exist which satisfy the biconditional criterion on adversarial-ensemble exercises, thereby allowing the capability gate to restrict HITL to unverified skills only. No concrete procedure, proof of satisfiability, or evaluation against the adversarial ensemble is supplied; the reference implementation is referenced solely for the ten runtime guidelines. This leaves the claim that verification enables sustainable HITL as an untested assumption and is load-bearing for the paper's contribution."},{"response":"The referee is correct that the manuscript defines the capability gate's policy as depending on verification level but does not supply a concrete policy table or formal semantics. We will add an illustrative policy table in the revised manuscript that shows, for each verification level, which capability requests trigger mandatory HITL review versus automated allowance. This table will be accompanied by a brief explanation of how the biconditional criterion informs the policy, making clear that lower verification levels require human intervention on irreversible actions and thereby avoiding indiscriminate approval.","revision_made":"yes","referee_comment":"[Trust Schema and Capability Gate] Section on the trust schema and capability gate: the HITL policy is defined as a function of the verification level, yet no formal semantics, decision procedure, or example policy table is provided to show how the gate would behave under the biconditional criterion. Without this, it is unclear whether the schema can be implemented without reintroducing the rubber-stamping problem it seeks to avoid."}],"tokens_in":1510,"tokens_out":548,"duration_ms":47487,"standing_objections":[]},"desk_editor":{"model":"grok-4.3","letter":"The main thing here is a proposal to treat skills in LLM agent runtimes as untrusted code until they pass explicit verification, using a trust schema with verification levels on the manifest and a biconditional correctness criterion that any verification procedure must satisfy on adversarial-ensemble exercises. This is meant to let the capability gate skip human oversight for verified skills and keep HITL only for the rest, avoiding rubber-stamping at scale. The ten normative guidelines for the runtime profile come from their open-source reference implementation, which gives the ideas some grounding in practice. The paper does a clear job spelling out why signatures, clearances, or origin registries are not enough for these skills and why constant HITL gates become operationally impossible. That diagnosis of the scaling problem is useful on its own. What is new is the specific combination of the verification level, the HITL policy tied to it, and the biconditional criterion that demands correct performance on both sides of an adversarial test. The contribution is presented as harness- and model-agnostic, which keeps the focus on the runtime layer. The soft spot is that no concrete verification procedure is shown that actually satisfies the biconditional criterion, and there is no derivation, proof, or test result demonstrating that such a procedure can be built or that it would hold up. The central claim therefore rests on the assumption that the criterion is achievable rather than on evidence that it is. The citation pattern is light, but that is secondary to the missing demonstration. This paper is for engineers and researchers who build or secure runtime environments for LLM agents, especially in settings where skills are deployed as first-class artifacts. A reader looking for a structured way to think about trust and oversight in agent systems would get value from the schema and the guidelines. It deserves a serious referee because the operational problem it identifies is real and the framework is coherent enough to be worth testing and refining. I would send it to peer review rather than desk reject, with the expectation that reviewers will press for a concrete verification example or satisfiability argument.","headline":"The paper frames agent skills as untrusted code by default and offers a trust schema plus biconditional criterion to limit HITL to unverified cases, but supplies no working verification method that meets the criterion.","tokens_in":2395,"tokens_out":494,"would_cite":false,"duration_ms":49218,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"rs_alignment":{"model":"grok-4.3","evidence":[],"headline":"Agent skill trust schema, verification levels, and biconditional audit criterion lie outside RS scope","alignment":"orthogonal","rationale":"The paper's central machinery (trust schema with verification levels, capability gate keyed to verification, biconditional D=S audit-world consistency on operation-and-target projection, adversarial-ensemble benchmark, G1–G12 runtime guidelines) operates entirely in the domain of supply-chain security, mandatory access control, and HITL policy for LLM agent runtimes. It invokes no recognition-cost functions, ratio-symmetric costs, golden-ratio identities, 8-tick periodicity, or parameter-free derivations of constants. RS theorems (e.g., reality_from_one_distinction, J-uniqueness via Aczél, Alexander-duality D=3 forcing, phi-ladder constants) therefore neither confirm nor contradict any claim in the paper.","tokens_in":51164,"confidence":"high","tokens_out":192,"duration_ms":11013,"cache_read_input_tokens":32896,"cache_creation_input_tokens":0},"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"grok-4.3","headline":"A skill is untrusted code until verified, so the runtime enforces verification before granting trust instead of relying on signatures or origins.","keywords":["agent skills","trust schema","human-in-the-loop","verification criterion","capability gate","runtime security","adversarial testing","LLM agents"],"falsifier":"A concrete adversarial-ensemble test in which every candidate verification procedure either fails the biconditional criterion or allows an unsafe skill to pass as verified.","tokens_in":2698,"feed_emoji":"🛡️","tokens_out":655,"duration_ms":33797,"temperature":0.7,"pith_summary":"The paper establishes that agent skills, as packages extending large language models, must be treated as untrusted until a verification process confirms their behavior. This default prevents the runtime from assuming trust based on external markers and makes human-in-the-loop oversight sustainable by triggering it only for unverified skills. The authors supply a trust schema that records verification level on each skill manifest, a capability gate that ties intervention policy to that level, and a biconditional correctness criterion any verification procedure must meet when tested against adversarial ensembles. They also abstract ten normative guidelines from a working implementation into a portable runtime profile. The result separates verification as its own gated activity, avoiding the operational collapse that occurs when every irreversible action requires human approval.","feed_headline":"Agent skills remain untrusted until verified by runtime","feed_subtitle":"Schema and correctness criterion let human oversight apply only to unverified skills, avoiding constant approval at scale.","key_machinery":"Trust schema with explicit verification level on each skill manifest, which controls when the capability gate requires human-in-the-loop review for unverified skills.","core_discovery":"A skill is untrusted code until it is verified, and the runtime that loads it must enforce that default rather than infer trust from a signature, a clearance, or a registry of origin. The paper defines a trust schema carrying an explicit verification level on every skill manifest, a capability gate whose human-in-the-loop policy is a function of that level, a biconditional correctness criterion that any candidate verification procedure must satisfy on an adversarial-ensemble exercise, and a portable runtime profile distilled into ten normative guidelines from an open-source reference implementation.","pith_inferences":["The same verification requirement could apply to other forms of dynamic instruction loading in LLM-based systems.","Standardizing the biconditional criterion might allow skills to move between different agent runtimes with retained verification status.","Adversarial testing focused on LLM-specific behaviors could surface failure modes unique to agent skills."],"forward_implications":["Human-in-the-loop gates activate only for unverified skills rather than on every irreversible action.","Agent runtimes avoid operational collapse into rubber-stamping at non-trivial scale.","Verification occurs as a distinct gated process before the main runtime loads the skill.","Trust decisions no longer depend on signatures, clearances, or origin registries."],"fun_headline_variants":["Agent runtimes enforce skill verification as default trust policy","Trust schema sets verification levels on every agent skill manifest","Biconditional criterion validates verification via adversarial ensembles","Portable guidelines limit HITL to unverified agent skills only"],"cache_read_input_tokens":64,"weakest_assumption_plain":"A verification procedure exists that can satisfy the biconditional correctness criterion when tested on an adversarial-ensemble exercise.","fun_headline_variants_meta":{"raw":{"variants":["Agent runtimes enforce skill verification as default trust policy","Trust schema sets verification levels on every agent skill manifest","Biconditional criterion validates verification via adversarial ensembles","Portable guidelines limit HITL to unverified agent skills only"]},"model":"grok-4.3","cost_usd":0.008283,"raw_usage":{"total_tokens":3713,"prompt_tokens":746,"num_sources_used":0,"completion_tokens":62,"cost_in_usd_ticks":82828000,"prompt_tokens_details":{"text_tokens":746,"audio_tokens":0,"image_tokens":0,"cached_tokens":64},"completion_tokens_details":{"audio_tokens":0,"reasoning_tokens":2905,"accepted_prediction_tokens":0,"rejected_prediction_tokens":0}},"tokens_in":746,"tokens_out":62,"duration_ms":64261,"temperature":1.0,"reasoning_tokens":2905,"cache_read_input_tokens":64,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-05-19T18:20:20.231776+00:00","model_set":{"reader":"grok-4.3"},"falsifier":"A concrete adversarial-ensemble test in which every candidate verification procedure either fails the biconditional criterion or allows an unsafe skill to pass as verified.","supporting_citations":[],"review_version":2}