security

security is a skill for Claude Code from TheBeardedBearSAS/claude-craft. It costs 29 tokens per session (190 once invoked), scanned A, original, MIT.

A general security guide based on the OWASP Top 10, a list of common and serious web-application security risks. It covers input validation, safe database queries, password storage, secrets, and security headers.

In plain words
What is it for?
Use it when reviewing code, adding authentication or authorization, hardening an application, or discussing vulnerabilities.
Why use it?
It helps prevent common vulnerabilities caused by trusting user input, exposing secrets, or handling passwords and queries unsafely.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Part of the claude-craft plugin — 56 skills, 94 commands, 47 agents, 5 hooks shipped together

Good fit Use it when reviewing code, adding authentication or authorization, hardening an application, or discussing vulnerabilities.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thebeardedbearsas/claude-craft/security
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 TheBeardedBearSAS/claude-craft --skill security
Clone the repo
git clone --depth 1 https://github.com/TheBeardedBearSAS/claude-craft

Made for: Claude Code.

Or install claude-craft, the plugin that ships this one along with the rest of its 56 skills, 94 commands, 47 agents, 5 hooks.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/thebeardedbearsas/claude-craft/security.svg)](https://agentmods.dev/skills/thebeardedbearsas/claude-craft/security)
Your own site
<a href="https://agentmods.dev/skills/thebeardedbearsas/claude-craft/security"><img src="https://agentmods.dev/badge/skills/thebeardedbearsas/claude-craft/security.svg" alt="Measured on agentmods" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 190 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00029 $0.00190
Opus 5 $0.00015 $0.00095
Sonnet 5 $0.00006 $0.00038
Haiku 4.5 $0.00003 $0.00019

Measured 3d ago against content hash 40f318cd11ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

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 3d 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/security/SKILL.md · 20 lines

What it actually says

Security

This skill provides universal security guidelines and OWASP Top 10 best practices applicable to any technology stack.

See @REFERENCE.md for detailed documentation.

Quick Reference

  • Validation: Always server-side, never trust client input
  • Queries: Parameterized only (no SQL concatenation)
  • Passwords: Hash with bcrypt/Argon2 (never MD5/SHA1)
  • Secrets: Environment variables or vault (never in code)
  • Headers: CSP, X-Frame-Options, HSTS, nosniff
Files

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.

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. 3d ago First seen · 20 lines · 0 tokens per session scan A 40f318cd11ff

Subscribe to this mod's changes

security is a skill published in the GitHub repository TheBeardedBearSAS/claude-craft (105 stars, last pushed 4d ago), licensed MIT. It adds 29 tokens to every session and 190 once invoked, about $0.0001 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 2026-09-03.

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