dependency-vuln-scanner

dependency-vuln-scanner is a skill for Claude Code, Codex from sourav15mukherjee/skillforge-free-skills. It costs 76 tokens per session (1,218 once invoked), scanned A, original, MIT.

A dependency security checker for software packages used by projects. It checks ecosystems including npm, Python, Rust, Go, Java, Ruby, and .NET for known CVEs, old packages, and supply-chain risks.

In plain words
What is it for?
Use it to audit dependency manifests and lock files, rate findings by severity, and prepare package updates or other remediation.
Why use it?
It reveals security problems in direct and indirect packages before they become vulnerabilities in the application, and identifies available fixes.

Skill for Claude CodeCodex

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

Good fit Use it to audit dependency manifests and lock files, rate findings by severity, and prepare package updates or other remediation.

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Install with agentmods
npx agentmods add skills/sourav15mukherjee/skillforge-free-skills/dependency-vuln-scanner
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 sourav15mukherjee/skillforge-free-skills --skill dependency-vuln-scanner
Clone the repo
git clone --depth 1 https://github.com/sourav15mukherjee/skillforge-free-skills

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 dependency-vuln-scanner

README.md
[![agentmods](https://agentmods.dev/badge/skills/sourav15mukherjee/skillforge-free-skills/dependency-vuln-scanner/github.svg)](https://agentmods.dev/skills/sourav15mukherjee/skillforge-free-skills/dependency-vuln-scanner)
Your own site
<a href="https://agentmods.dev/skills/sourav15mukherjee/skillforge-free-skills/dependency-vuln-scanner"><img src="https://agentmods.dev/badge/skills/sourav15mukherjee/skillforge-free-skills/dependency-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 dependency-vuln-scanner

Your own site · 80×15
<a href="https://agentmods.dev/skills/sourav15mukherjee/skillforge-free-skills/dependency-vuln-scanner"><img src="https://agentmods.dev/badge/skills/sourav15mukherjee/skillforge-free-skills/dependency-vuln-scanner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,218 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 $0.00076 $0.01218
Opus 5 $0.00038 $0.00609
Sonnet 5 $0.00015 $0.00244
Haiku 4.5 $0.00008 $0.00122

Measured 12d ago against content hash 2aa84a9c904d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

dependency-vuln-scanner 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.

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.

dependency-vuln-scanner/SKILL.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dependency Vulnerability Scanner

Audit project dependencies for security vulnerabilities, supply chain risks, and outdated packages with severity-rated findings and actionable remediation.

Workflow

  1. Detect the project's ecosystem(s) Search for dependency manifest files:

    • package.json → Node.js/npm/yarn/pnpm
    • requirements.txt or pyproject.toml or Pipfile → Python
    • go.mod → Go
    • Cargo.toml → Rust
    • pom.xml or build.gradle → Java/Kotlin
    • Gemfile → Ruby
    • *.csproj or packages.lock.json → .NET

    Read all found manifests. Note the lock file (package-lock.json, yarn.lock, etc.) existence.

  2. Pass 1 — Known CVE Scan Run the ecosystem's built-in audit tool:

    • npm: npm audit --json
    • pip: pip-audit or safety check
    • cargo: cargo audit
    • go: govulncheck ./...
    • maven: mvn dependency-check:check

    If the built-in tool is not available, read the manifest and manually cross-reference packages against common CVE databases.

    For each vulnerability found:

    • Package name and version
    • CVE identifier
    • CVSS score (Critical ≥9.0, High ≥7.0, Medium ≥4.0, Low <4.0)
    • Whether it's in direct or transitive dependency
    • Fix available? (patched version, no fix, or workaround)
  3. Pass 2 — Supply Chain Risk Analysis For each direct dependency, check:

    • Maintainer activity: Has the package been updated in the last 12 months?
    • Download trends: Is download count declining (potential abandonment)?
    • Typosquatting risk: Is the name suspiciously similar to a popular package?
    • License compatibility: Are there restrictive licenses (GPL-3.0, AGPL) in an MIT project?
    • Dependency depth: Does it pull in a massive transitive tree?
  4. Pass 3 — Outdated Packages Run the ecosystem's outdated check:

    • npm: npm outdated --json
    • pip: pip list --outdated
    • cargo: cargo outdated

    Flag packages that are:

    • Multiple major versions behind (high risk of breaking changes)
    • End-of-life (no longer receiving security patches)

Read the full file on GitHub · 138 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. 12d ago First seen · 138 lines · 76 tokens per session scan A 2aa84a9c904d

Subscribe to this mod's changes

dependency-vuln-scanner is a skill published in the GitHub repository sourav15mukherjee/skillforge-free-skills (5 stars, last pushed 5mo ago), licensed MIT. It adds 76 tokens to every session and 1,218 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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