Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add ArabelaTso/Skills-4-SE --skill verification-boundary-reportergit clone --depth 1 https://github.com/ArabelaTso/Skills-4-SEWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/arabelatso/skills-4-se/verification-boundary-reporter)<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/verification-boundary-reporter"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/verification-boundary-reporter/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/verification-boundary-reporter"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/verification-boundary-reporter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 90 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 121 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 449 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00093 | $0.02929 |
| Opus 5 | $0.00046 | $0.01465 |
| Sonnet 5 | $0.00019 | $0.00586 |
| Haiku 4.5 | $0.00009 | $0.00293 |
Grade A, and why
verification-boundary-reporter scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 482 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Verification Boundary Reporter
Analyze formal verification artifacts and produce clear reports on what is verified, what is assumed, and what remains unverified.
Overview
When working with formally verified code, it's critical to understand exactly what guarantees the verification provides and where the boundaries lie. This skill analyzes verification artifacts and produces structured reports that:
- Identify verified components - Code with completed proofs
- List assumptions and axioms - What is taken on trust
- Document the trusted computing base (TCB) - External dependencies
- Highlight unverified components - Gaps in verification coverage
- Explain verification limitations - Why certain parts aren't verified
Core principle: Be conservative and explicit. Never overstate verification coverage.
Analysis Workflow
Verification Artifacts
↓
Parse & Identify Components
↓
Classify Each Component
↓
Analyze Dependencies
↓
Generate Boundary Report
Component Classification
Verified Components
Definition: Code with complete, checked proofs of stated properties.
Criteria:
- All proof obligations discharged
- No
sorry,admit,Admittedin proofs - Proof checked by verifier (Isabelle, Coq, Dafny, etc.)
- Properties explicitly stated and proven
Example identification:
(* VERIFIED *)
theorem insertion_sort_correct:
"sorted (insertion_sort xs) ∧ mset (insertion_sort xs) = mset xs"
proof (induction xs)
case Nil
then show ?case by simp
next
case (Cons x xs)
then show ?case using insert_sorted mset_insert by auto
qed
Assumed Components
Definition: Statements accepted without proof.
Criteria:
- Marked with
axiom,sorry,admit,Admitted,assume - Declared without proof
- Explicitly stated as assumptions
Example identification:
(* ASSUMED *)
Axiom functional_extensionality : forall A B (f g : A -> B),
(forall x, f x = g x) -> f = g.
(* ASSUMED - proof incomplete *)
Theorem complex_property : ...
Proof.
(* ... *)
Admitted.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 482 lines · 93 tokens per session scan A 28a1c7312269
verification-boundary-reporter is a skill published in the GitHub repository ArabelaTso/Skills-4-SE (252 stars, last pushed 22d ago), licensed Apache-2.0. It adds 93 tokens to every session and 2,929 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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