vc-security

vc-security is a skill for Claude Code, Codex from withkynam/vibecode-pro-max-kit. It costs 41 tokens per session (1,198 once invoked), scanned A, original, MIT.

A structured security review based on STRIDE, a method for categorizing attack threats, and OWASP guidance, a widely used source of web-security practices. It scans code, ranks findings by severity, and can apply fixes iteratively.

In plain words
What is it for?
Auditing a selected scope, producing a severity-ranked report, fixing findings, and limiting the number of fix-and-check iterations.
Why use it?
It helps identify security weaknesses before release or after adding authentication, payments, or data handling. The optional fix mode limits and rechecks automated changes.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/withkynam/vibecode-pro-max-kit/vc-security
Any agent
npx skills add withkynam/vibecode-pro-max-kit --skill vc-security
Clone the repo
git clone --depth 1 https://github.com/withkynam/vibecode-pro-max-kit

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 vc-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/withkynam/vibecode-pro-max-kit/vc-security.svg)](https://agentmods.dev/skills/withkynam/vibecode-pro-max-kit/vc-security)
Your own site
<a href="https://agentmods.dev/skills/withkynam/vibecode-pro-max-kit/vc-security"><img src="https://agentmods.dev/badge/skills/withkynam/vibecode-pro-max-kit/vc-security.svg" alt="Measured on agentmods" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,198 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00041 $0.01198
Opus 5 $0.00020 $0.00599
Sonnet 5 $0.00008 $0.00240
Haiku 4.5 $0.00004 $0.00120

Measured 4d ago against content hash 50db37b90d91, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

vc-security 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 4d 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.

.claude/skills/vc-security/SKILL.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

vc-security — Security Audit

Output style: Follow process/development-protocols/communication-standards.md — answer-first, plain language, no unexplained jargon, TL;DR on long responses.

Runs a structured STRIDE + OWASP security audit on a given scope. Produces a severity-ranked findings report. With --fix, applies fixes iteratively using the vc-autoresearch guard pattern.

When to Use

  • Before a release or major deployment
  • After adding auth, payment, or data-handling features
  • Periodic security review (monthly/quarterly)
  • Compliance check (SOC 2, GDPR, PCI-DSS prep)

When NOT to Use

  • Purely cosmetic changes (CSS, copy edits)
  • No user-facing code or data handling involved

Modes

Mode Invocation Behavior
Audit only /vc-security <scope> Scan → categorize → report
Audit + Fix /vc-security <scope> --fix Scan → categorize → fix iteratively
Bounded fix /vc-security <scope> --fix --iterations N Limit fix iterations to N

Audit Methodology

1. Scope Resolution

Expand the provided glob or full keyword into a file list. Read all in-scope files before analysis.

2. STRIDE Analysis

Evaluate each threat category systematically:

  • Spoofing — identity/authentication weaknesses
  • Tampering — input validation, integrity controls
  • Repudiation — audit logging gaps
  • Information Disclosure — data leakage, secret exposure
  • Denial of Service — rate limits, resource exhaustion
  • Elevation of Privilege — broken access control, RBAC gaps

3. OWASP Top 10 Check

Map findings to OWASP categories (A01–A10). See references/stride-owasp-checklist.md for per-category checks.

4. Dependency Audit

Run the appropriate package audit tool for the detected stack:

  • Node.js: pnpm audit
  • Python: pip-audit
  • Go: govulncheck
  • Ruby: bundle audit

5. Secret Detection

Scan for hardcoded API keys, passwords, tokens, and private keys using regex patterns. See references/stride-owasp-checklist.md → Secret Patterns.

Read the full file on GitHub · 149 lines

Files

What ships with it

3 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. 4d ago First seen · 149 lines · 41 tokens per session scan A 50db37b90d91

Subscribe to this mod's changes

vc-security is a skill published in the GitHub repository withkynam/vibecode-pro-max-kit (1,115 stars, last pushed 2mo ago), licensed MIT. It adds 41 tokens to every session and 1,198 once invoked, about $0.0002 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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