Auditing npm Dependencies

What it does

When your agent uses it

• : pre-merge gate on a Node project
• Post-incident sweep after a transitive package compromise (e.g
• With: audit npm deps
• Npm vulnerability scan

Example prompts

• “audit npm deps”
• “npm vulnerability scan”
• “check node packages for CVEs”
• “/auditing-npm-dependencies”

Requirements

• Python 3
• Node.js
• Compatibility (from SKILL.md): Designed for Claude Code
• Pre-approved tools (allowed-tools): Read, Bash(npm:*), Bash(python3:*), Glob

Workflow steps

4 steps, taken from the step headings in SKILL.md.

1. 1Identify the scan target
2. 2Run the audit
3. 3Interpret findings
4. 4Remediation

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Bash(npm:*)
  • Bash(python3:*)
  • Glob

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (Python), which the agent can run.

  Shell commands in SKILL.md call:

  • npm
  • python3
  • jq

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Designed for Claude Code

  From compatibility in the SKILL.md frontmatter.

Context cost

Auditing npm Dependencies loads about 2.5k tokens when it runs, and up to ~5.2k if it reads all its reference files. Until then it costs about 227 tokens; SKILL.md has 997 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~227

When it runs · the whole SKILL.md, loaded when a task matches

~2.5k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~5.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NoteMentions a .env fileSKILL.md:28

  - Write(.env)

• NoteMentions a .env fileSKILL.md:29

  - Edit(.env)

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 997 words, ~2,473 tokens.

name

auditing-npm-dependencies

description

Audit a Node.js project's installed npm dependency tree for known CVEs by wrapping the npm audit JSON output and emitting findings in the canonical penetration-tester schema. Detects direct AND transitive vulnerabilities, normalizes npm's severity scale (info/low/moderate/ high/critical) to the shared Severity enum, and parses both v1 and v2 audit output formats so the skill works against npm 6 and npm 7+ lockfiles. Use when: pre-merge gate on a Node project, post-incident sweep after a transitive package compromise (e.g. event-stream, ua-parser, node-ipc, color.js), SOC2 vendor-management evidence collection, or auditing an inherited or acquired Node codebase. Threshold: any HIGH or CRITICAL CVE in the resolved dependency tree. MODERATE / LOW reported informationally. Trigger with: "audit npm deps", "npm vulnerability scan", "check node packages for CVEs", "npm audit".

allowed-tools

Read, Bash(npm:*), Bash(python3:*), Glob

compatibility

Designed for Claude Code

disallowed-tools

Bash(rm:*), Bash(curl:*), Bash(wget:*), Write(.env), Edit(.env), Bash(npm publish:*), Bash(npm install:*)

version

3.30.0

author

Jeremy Longshore <jeremy@intentsolutions.io>

license

MIT

tags

security, dependency-audit, npm, cve, pentest

python3 ./scripts/audit_npm.py /path/to/node-project

Usage: audit_npm.py PATH [OPTIONS]

Options:
  --output FILE      Write findings to FILE (default: stdout)
  --format FMT       json | jsonl | markdown (default: markdown)
  --min-severity SEV (default: info)
  --include-dev      Audit `devDependencies` too (default: prod only)
  --no-cache         Pass --no-audit-cache to npm (slower; fresh data)
  --json-only        Print raw `npm audit --json` and exit (debug)

python3 ./scripts/audit_npm.py . --min-severity high --format json --output npm-audit.json
jq -e '. == []' npm-audit.json || { echo "High/critical npm CVE — fix before merge"; exit 1; }

- name: npm dependency audit
  run: |
    python3 plugins/security/penetration-tester/skills/auditing-npm-dependencies/scripts/audit_npm.py \
        . --min-severity high --format markdown --output npm-audit.md
- name: Upload audit
  uses: actions/upload-artifact@v4
  with:
    name: npm-audit
    path: npm-audit.md

python3 ./scripts/audit_npm.py . --include-dev --no-cache --format json \
    --output evidence/CC7-npm-audit-$(date +%Y%m%d).json

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (scripts, references) in skills/.curated/auditing-npm-dependencies of jeremylongshore/tons-of-skills-marketplace.

• SKILL.md
• references/PLAYBOOK.md
• references/THEORY.md
• scripts/audit_npm.py

Open the folder on GitHubat commit cfae287