security-dependency-scanner

security-dependency-scanner is an agent for Claude Code from charlesjones-dev/claude-code-plugins-dev. It costs 35 tokens per session (263 once invoked), scanned A, original, MIT.

An agent that checks a deployed website for old software dependencies, known security vulnerabilities, and incorrectly configured security headers.

In plain words
What is it for?
Use it to review JavaScript, CSS, frameworks, CMSs, build tools, known CVEs, dependency version gaps, and headers such as CSP and HSTS.
Why use it?
It helps reveal security risks in the running website that may not be visible from its source code alone.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the ai-security plugin — 4 skills, 2 agents shipped together

Good fit Use it to review JavaScript, CSS, frameworks, CMSs, build tools, known CVEs, dependency version gaps, and headers such as CSP and HSTS.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/charlesjones-dev/claude-code-plugins-dev/security-dependency-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.

Clone the repo
git clone --depth 1 https://github.com/charlesjones-dev/claude-code-plugins-dev

Made for: Claude Code.

Or install ai-security, the plugin that ships this one along with the rest of its 4 skills, 2 agents.

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 security-dependency-scanner

README.md
[![agentmods](https://agentmods.dev/badge/agents/charlesjones-dev/claude-code-plugins-dev/security-dependency-scanner/github.svg)](https://agentmods.dev/agents/charlesjones-dev/claude-code-plugins-dev/security-dependency-scanner)
Your own site
<a href="https://agentmods.dev/agents/charlesjones-dev/claude-code-plugins-dev/security-dependency-scanner"><img src="https://agentmods.dev/badge/agents/charlesjones-dev/claude-code-plugins-dev/security-dependency-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 security-dependency-scanner

Your own site · 80×15
<a href="https://agentmods.dev/agents/charlesjones-dev/claude-code-plugins-dev/security-dependency-scanner"><img src="https://agentmods.dev/badge/agents/charlesjones-dev/claude-code-plugins-dev/security-dependency-scanner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 263 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 $0.00035 $0.00263
Opus 5.5 $0.00014 $0.00105
Sonnet 5.5 $0.00007 $0.00053
Haiku 4.5 $0.00003 $0.00026

Measured 1mo ago against content hash a149d6cac559, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

security-dependency-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 1mo 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.

plugins/ai-security/agents/security-dependency-scanner.md · 21 lines

What it actually says

Load the security-scan-dependencies skill and follow its methodology to scan a website URL for security vulnerabilities in dependencies, outdated libraries, and security header misconfigurations.

Focus on identifying:

  • Outdated JavaScript/CSS libraries and frameworks (React, Vue, Angular, Svelte, Solid.js, Lit, Alpine.js, HTMX, Qwik)
  • Meta-framework detection (Next.js, Nuxt, Remix, SvelteKit, Astro, Gatsby)
  • CMS version detection (WordPress, Drupal, Joomla, Umbraco, Sitecore, Optimizely, Kentico)
  • Headless CMS detection (Strapi, Sanity, Contentful, Payload CMS)
  • Build tool artifacts (Webpack, Vite, esbuild, SWC, Turbopack)
  • Known CVEs affecting detected versions
  • Missing or misconfigured HTTP security headers (CSP, HSTS, X-Frame-Options, etc.)
  • Version gaps between detected and latest stable releases

Provide a structured report using the security-scan-dependencies skill's defined template.

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. 1mo ago First seen · 21 lines · 35 tokens per session scan A a149d6cac559

Subscribe to this mod's changes

security-dependency-scanner is an agent published in the GitHub repository charlesjones-dev/claude-code-plugins-dev (35 stars, last pushed 6d ago), licensed MIT. It adds 35 tokens to every session and 263 once invoked, about $0.0001 per session on Opus 5.5. 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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