omv-radar

omv-radar is a skill for Claude Code, Codex from bx33661/oh-my-vul. It costs 87 tokens per session (841 once invoked), scanned A, original, MIT.

A security research workflow for finding copies of a known vulnerability in related packages, forks, and projects that depend on them.

In plain words
What is it for?
Starting variant searches from a finding or public fix, organizing candidate packages, maintaining a watchlist, and preparing radar status or refresh reports.
Why use it?
It helps researchers check whether the same bug pattern exists elsewhere after one example has been understood or publicly disclosed.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Starting variant searches from a finding or public fix, organizing candidate packages, maintaining a watchlist, and preparing radar status or refresh reports.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bx33661/oh-my-vul/omv-radar
Install

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.

Any agent
npx skills add bx33661/oh-my-vul --skill omv-radar
Clone the repo
git clone --depth 1 https://github.com/bx33661/oh-my-vul

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 omv-radar

README.md
[![agentmods](https://agentmods.dev/badge/skills/bx33661/oh-my-vul/omv-radar/github.svg)](https://agentmods.dev/skills/bx33661/oh-my-vul/omv-radar)
Your own site
<a href="https://agentmods.dev/skills/bx33661/oh-my-vul/omv-radar"><img src="https://agentmods.dev/badge/skills/bx33661/oh-my-vul/omv-radar/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 omv-radar

Your own site · 80×15
<a href="https://agentmods.dev/skills/bx33661/oh-my-vul/omv-radar"><img src="https://agentmods.dev/badge/skills/bx33661/oh-my-vul/omv-radar.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 841 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 $0.00087 $0.00841
Opus 5 $0.00044 $0.00420
Sonnet 5 $0.00017 $0.00168
Haiku 4.5 $0.00009 $0.00084

Measured 12d ago against content hash 3f5945713beb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

omv-radar 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 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/check_output.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/omv-radar/SKILL.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

omv-radar

Turn one vulnerability pattern into many findings.

Radar's job is diffusion: a deeply understood bug (even one you could not submit because it was already public) amortizes across every sibling package, fork, and downstream consumer that still has the same sink and the same missing guard.

Invocation

/omv-radar variant <seed-id>     # build a diffusion campaign from a seed
/omv-radar brief                 # watchlist + active campaign status
/omv-radar refresh [--dry-run]   # watchlist maintenance only

Variant Workflow

  1. Ingest the seed: read .omv/findings/<seed-id>.yaml (or a public advisory/fix-PR supplied by the user). Extract the seed fingerprint: sink shape, missing guard, and reachability precondition. All three are required — a sink without its precondition yields false positives.
  2. Load references/variant-playbooks.md and classify the diffusion paths: sibling (same niche), fork/copied code, or downstream impact. State which paths apply to this seed and why.
  3. Build the candidate list per path using the passive search mechanics in the playbook (registry keywords, code search, dependents graph, fix-commit mining). Names only, no auditing yet.
  4. Quick-screen each candidate within the fetch budget (≤3 files): does the sink fingerprint exist, is the guard missing in the same way? Record candidates that pass with the evidence lines you saw.
  5. Hand screened candidates to omv-audit as separate findings. Variant origin grants no exemption: each candidate still needs the full evidence chain and its own six-source dedup before any report.
  6. Write the campaign to .omv/campaigns/<seed-id>-variant.yaml and link it back into the seed finding's notes.

Judgment Rules

  • A publicly disclosed seed is still a valid seed. Novelty is determined per target by dedup, not by the seed's disclosure state.
  • If a campaign starts passing everything, the sink fingerprint is too wide — narrow it before continuing (see playbook §6).
  • Prefer downstream targets where untrusted input demonstrably reaches the sink; they carry their own CWE and higher acceptance odds.

Read the full file on GitHub · 84 lines

Files

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.

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. 12d ago First seen · 84 lines · 87 tokens per session scan A 3f5945713beb

Subscribe to this mod's changes

omv-radar is a skill published in the GitHub repository bx33661/oh-my-vul (4 stars, last pushed 23d ago), licensed MIT. It adds 87 tokens to every session and 841 once invoked, about $0.0004 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 2026-08-31.

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