Anthropic Cybersecurity Skills

This is a comprehensive library of 754 structured cybersecurity skills mapped to five industry frameworks including MITRE ATT&CK, NIST CSF, and D3FEND. It's designed for AI agents performing security operations, covering 26 domains from incident response to malware analysis to cloud security. The progressive loading pattern is smart: scan frontmatter first at about 30 tokens per skill, then pull full content only when needed. Each skill follows the agentskills.io standard with YAML frontmatter, reference materials, scripts, and framework mappings. Built by ara.so, it's probably overkill for simple security tasks but genuinely useful if you're building agents that need to reason about security operations with proper taxonomy and industry alignment.

skills.sh installs: 1.3K
GitHub stars: 6
last updated: Jul 14, 2026

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Install

$ npx -y skills add aradotso/security-skills --skill anthropic-cybersecurity-skills --agent claude-code

Installs into .claude/skills of the current project.

Files

anthropic-cybersecurity-skills

Skill by ara.so — Security Skills collection.

Overview

The Anthropic Cybersecurity Skills library provides 754 production-grade cybersecurity skills spanning 26 security domains. Each skill is structured following the agentskills.io standard and mapped to five industry frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, MITRE D3FEND, and NIST AI RMF. This enables AI agents to perform security operations with expert-level guidance.

Installation

# Option 1: Using npx (recommended)
npx skills add mukul975/Anthropic-Cybersecurity-Skills

# Option 2: Git clone
git clone https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
cd Anthropic-Cybersecurity-Skills

# Option 3: Add as submodule
git submodule add https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills/cybersecurity