agentleFS
imMamdouhaboammarimMamdouhaboammar/cybersecurity-skills/CLAUDE.md

cybersecurity-skills

CLAUDE.md0 starsChanged 2 months agoMITView on GitHub

Cybersecurity Skills is a collection of cybersecurity skill prompts for AI coding agents. Skills are authored as Claude Code SKILL.md files (the canonical format) and adapted for Cursor and Codex via a build script. Every skill follows the Anthropic skill creator guidelines: Frontmatter fields: - name — Slug used for /skill-name invocation. Lowercase + hyphens only. - description — Explains WHAT the skill does and WHEN to use it. Claude uses this to decide automatic invocation. Be "pushy" to combat…

The file

We split this CLAUDE.md into the rules it gives an agent

10 rules. About 0 are common, 5 are distinctive, and 5 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈5

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 5

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Every skill follows the Anthropic skill creator guidelines:

    line 36
  2. Distinctive:

    Use imperative form ("Run this command", "Check for X")

    line 54
  3. Very specific:

    Keep SKILL.md under 500 lines

    line 55
  4. Very specific:

    Create skills/<skill-name>/SKILL.md using templates/skill-template.md

    line 67
  5. Very specific:

    Use proper frontmatter (name, description, allowed-tools)

    line 68
  6. Distinctive:

    Write instructions in imperative form

    line 69
  7. Very specific:

    Run node scripts/build-adapters.mjs to generate adapters

    line 70
  8. Very specific:

    Test the skill in Claude Code by copying to .claude/skills/

    line 71
  9. Distinctive:

    All skills must include an authorization check before taking action

    line 75
  10. Distinctive:

    Keep descriptions "pushy" — include all relevant trigger phrases so the skill activates when needed

    line 78

≈ “Common” is an estimate: at least 1 in 5 of the 26,980 CLAUDE.md files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
CLAUDE.md

CLAUDE.md

Project Overview

Cybersecurity Skills is a collection of cybersecurity skill prompts for AI coding agents. Skills are authored as Claude Code SKILL.md files (the canonical format) and adapted for Cursor and Codex via a build script.

Supported Agents

AgentFormatLocation
Claude CodeSKILL.md (canonical)skills/<skill-name>/SKILL.md — copy to .claude/skills/
Cursor.mdc rule filesadapters/cursor/
CodexInstruction .mdadapters/codex/

Directory Structure

skills/
├── recon/SKILL.md
├── owasp-audit/SKILL.md
├── disk-forensics/SKILL.md
├── osint-recon/SKILL.md
├── incident-triage/SKILL.md
└── cloud-audit/SKILL.md
adapters/
├── cursor/          # Generated .mdc files
└── codex/           # Generated .md files
templates/
└── skill-template.md
scripts/
└── build-adapters.mjs

Skill Format (Claude Code SKILL.md)

Every skill follows the Anthropic skill creator guidelines:

---
name: skill-name                    # Lowercase, hyphens, max 64 chars
description: "What it does and when to use it. 200-1024 chars. Include trigger phrases."
allowed-tools: Bash, Read, Write    # Tools the skill can use
---

Frontmatter fields:

  • name — Slug used for /skill-name invocation. Lowercase + hyphens only.
  • description — Explains WHAT the skill does and WHEN to use it. Claude uses this to decide automatic invocation. Be "pushy" to combat undertriggering.
  • allowed-tools — Comma-separated list of tools the skill can access.
  • disable-model-invocation — Set true for manual-only skills (e.g., deploy).
  • user-invocable — Set false for background knowledge only.

Content guidelines:

  • Use imperative form ("Run this command", "Check for X")
  • Keep SKILL.md under 500 lines
  • Move reference material to separate files if needed
  • Define output formats explicitly

Build Commands

node scripts/build-adapters.mjs    # Generate Cursor + Codex adapters from SKILL.md files

Creating a New Skill

  1. Create skills/<skill-name>/SKILL.md using templates/skill-template.md
  2. Use proper frontmatter (name, description, allowed-tools)
  3. Write instructions in imperative form
  4. Run node scripts/build-adapters.mjs to generate adapters
  5. Test the skill in Claude Code by copying to .claude/skills/

Guidelines

  • All skills must include an authorization check before taking action
  • Skills should refuse destructive or malicious use cases
  • Focus on educational value and professional security workflows
  • Keep descriptions "pushy" — include all relevant trigger phrases so the skill activates when needed

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Your trail

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