Anthropic Cybersecurity Skills
754 structured cybersecurity skills for AI agents, mapped to MITRE ATT&CK, NIST CSF 2.0, and ATLAS.
About
Anthropic-Cybersecurity-Skills is a large open collection — 754 structured skills — that gives AI agents defensive security expertise mapped to six frameworks: MITRE ATT&CK v19.1 (286 distinct techniques across all 15 Enterprise tactics, validated with the official mitreattack-python library), NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF, and MITRE F3, spanning 26+ security domains. Install is one command — npx skills add mukul975/Anthropic-Cybersecurity-Skills — and it works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI, and other agentskills.io-compatible platforms under Apache 2.0.
Honest dual-use caveat: the collection documents offensive techniques (reconnaissance, execution, persistence, exfiltration) as structured skills — that is the point of the ATT&CK mapping, and it is intended for defensive security work, audits, and detection engineering. Treat it like any powerful security tooling: valuable in authorized hands, and worth a deliberate access decision before installing into an agent with broad permissions.
What it can do
- 754 cybersecurity skills
- Mapped to MITRE ATT&CK v19.1, NIST CSF 2.0, ATLAS, D3FEND
- 26+ security domains
- One-command install via npx skills
- Apache 2.0 licensed
Setup
Run npx skills add mukul975/Anthropic-Cybersecurity-Skills, or git clone and point your agent at the skill folders.
Prerequisites
An Agent Skills-compatible client; authorized security-testing scope for offensive-technique skills.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 66; Trending score 78/100 from researcher assessment.
★ 5,900 GitHub stars
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.