vuln-scanner

vuln-scanner is a skill for Claude Code, Codex from aaronjmars/aeon-agent. It costs 39 tokens per session (19,308 once invoked), scanned B, a copy of vuln-scanner, MIT.

A security auditing and responsible-disclosure workflow for finding real vulnerabilities in public code repositories. It can scan repositories, route findings for fixes or disclosure, resubmit queued advisories, and queue email disclosures.

In plain words
What is it for?
Use it to audit a repository, inspect a security watchlist, resubmit eligible advisories, or queue disclosure emails; it also includes a benign proof-of-concept smoke test.
Why use it?
It helps identify security flaws without immediately publishing unpatched vulnerabilities. It separates scanning, remediation through pull requests, and responsible disclosure steps.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions Codex.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./scripts/vuln-poc-gate.sh foundry \.

Good fit Use it to audit a repository, inspect a security watchlist, resubmit eligible advisories, or queue disclosure emails; it also includes a benign proof-of-concept smoke test.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/aaronjmars/aeon-agent
agentmods
npx agentmods add skills/aaronjmars/aeon-agent/vuln-scanner

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for vuln-scanner

README.md
[![agentmods](https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/vuln-scanner/github.svg)](https://agentmods.dev/skills/aaronjmars/aeon-agent/vuln-scanner)
Your own site
<a href="https://agentmods.dev/skills/aaronjmars/aeon-agent/vuln-scanner"><img src="https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/vuln-scanner/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.

agentmods 80×15 button for vuln-scanner

Your own site · 80×15
<a href="https://agentmods.dev/skills/aaronjmars/aeon-agent/vuln-scanner"><img src="https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/vuln-scanner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 19,308 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.19308
Opus 5 $0.00019 $0.09654
Sonnet 5 $0.00008 $0.03862
Haiku 4.5 $0.00004 $0.01931

Measured yesterday against content hash 1328de6f3288, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

vuln-scanner scanned grade B with 2 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 yesterday.

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.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

network is open, but `pip install` / `curl | sh` / `tar` are **not** on the in-run

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

network is open, but `pip install` / `curl | sh` / `tar` are **not** on the in-run
Origin

This is a copy

100% identical to vuln-scanner — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/vuln-scanner/SKILL.md · 1,135 lines

How it starts

The opening of the file, as written. The whole thing — 1,135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

${var} — Action selector, shaped [<action>][:<owner/repo>]. Empty or a bare owner/reposcan arm (audit that repo, or auto-select a trending one). resubmit / resubmit:owner/repore-submit arm (probe the security watchlist for repos that just enabled PVR and submit any queued advisory). disclose / emaildisclose arm (queue armed out-of-band email disclosures for sending). Examples:

  • `` → scan, auto-select from trending
  • openai/whisper → scan openai/whisper
  • resubmit → probe the whole watchlist and re-submit what flipped
  • resubmit:vercel/next.js → probe just that repo (one-off)
  • disclose (alias email) → arm & queue eligible disclosure emails
  • poc-smoke → exercise the PoC gate against a benign real Base fork (no audit or disclosure)

Today is ${today}. Read memory/MEMORY.md and the last 30 days of memory/logs/ before starting.

Why this skill exists

This is the write / action arm of the vuln-disclosure loop — one skill covering the full responsible-disclosure lifecycle:

  • Scan — a security scanner that dumps unpatched vulnerabilities into public PRs is a zero-day publisher, not a helper. This skill matches industry practice: Private Vulnerability Reporting (PVR) for code flaws, public PRs only for dependency CVEs that are already public. Bad disclosure burns credibility and puts users at risk.
  • Re-submit — when a scan finds a HIGH/CRITICAL issue in a repo with no PVR, no SECURITY.md, and no reachable contact, it has no safe channel — so it logs the finding as "channel": "skipped" in memory/vuln-scanned.json and stages a watchlist row. Without a weekly probe those findings silently age until the responsible-disclosure window closes. The re-submit arm closes that loop.
  • Disclose — when the only responsible path is a private email to the maintainer, drafts sit in memory/pending-disclosures/ with status: pending-operator-send, waiting for a human. The disclose arm finds drafts explicitly armed for auto-send, composes the email, and sends it in-run (Resend via ./secretcurl) behind a set of fail-closed caps — the send is the arm's final action.

Read the full file on GitHub · 1,135 lines

Changes

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.

  1. yesterday Changed · +44 lines 1328de6f3288
  2. 4d ago First seen · 1,091 lines · 39 tokens per session scan B b17491de609e

Subscribe to this mod's changes

vuln-scanner is a skill published in the GitHub repository aaronjmars/aeon-agent (11 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 19,308 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). It is 100% identical to vuln-scanner, differing in 0 lines, and is treated as a copy.

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