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 NovaCode37/claude-security-skills --skill dependency-checkgit clone --depth 1 https://github.com/NovaCode37/claude-security-skillsWrote 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/novacode37/claude-security-skills/dependency-check)<a href="https://agentmods.dev/skills/novacode37/claude-security-skills/dependency-check"><img src="https://agentmods.dev/badge/skills/novacode37/claude-security-skills/dependency-check/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/novacode37/claude-security-skills/dependency-check"><img src="https://agentmods.dev/badge/skills/novacode37/claude-security-skills/dependency-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00081 | $0.00619 |
| Opus 5 | $0.00041 | $0.00309 |
| Sonnet 5 | $0.00016 | $0.00124 |
| Haiku 4.5 | $0.00008 | $0.00062 |
Grade A, and why
dependency-check 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 today.
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 — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Dependency Check
Scans Python (requirements.txt) and npm (package.json) manifests for
known-vulnerable versions and supply-chain risks. Offline by default — it
ships a bundled advisory database so it runs in air-gapped CI — with an optional
live OSV.dev lookup. Pure standard library.
When to use this skill
- "Are any of my dependencies vulnerable?"
- "Audit requirements.txt / package.json."
- "Check for vulnerable / outdated packages before release."
What it reports
- Known vulnerabilities — version matches against the bundled advisory DB
(or OSV.dev with
--online), with CVE/ID, severity and summary. - Unpinned dependencies — ranges (
^,~,>=) or missing pins that make builds non-reproducible and widen supply-chain exposure.
How to run it
# Offline scan (bundled advisory DB)
python skills/dependency-check/checker.py requirements.txt
python skills/dependency-check/checker.py package.json
# Scan a directory (auto-discovers both manifest types)
python skills/dependency-check/checker.py .
# Live advisory lookup via OSV.dev
python skills/dependency-check/checker.py requirements.txt --online
# JSON output
python skills/dependency-check/checker.py . --json
# Only report MEDIUM or higher findings (unpinned warnings are LOW)
python skills/dependency-check/checker.py . --min-severity medium
Exit codes: 0 clean · 1 findings reported · 2 no manifest / usage
error. Unpinned dependencies are reported, so they fail the build too; suppress
them with --no-unpinned, or raise --min-severity to filter advisory
findings out of both the report and the exit code.
Recommended workflow for Claude
- Run offline first for a fast baseline, then
--onlinefor full coverage if the user has network access. - For each vulnerable package, recommend the minimum fixed version and note breaking-change risk.
- Encourage exact pins (
==/ lockfiles) for reproducible, auditable builds.
Note
The bundled DB is intentionally small (well-known historical CVEs) so the tool
is self-contained and testable. For comprehensive coverage use --online
(OSV.dev) or integrate a dedicated scanner; treat the offline DB as a fast
first pass.
What ships with it
2 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.
- today Changed · +5 lines 39cdcaacc97e
- 10d ago First seen · 67 lines · 81 tokens per session scan A 7151510a6b0b
dependency-check is a skill published in the GitHub repository NovaCode37/claude-security-skills (11 stars, last pushed yesterday), licensed MIT. It adds 81 tokens to every session and 619 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 2026-08-30.
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