Anthropic Cybersecurity Skills
734+ structured cybersecurity skills for AI agents, MITRE-mapped
An essential skill library for security teams using AI agents—free, well-structured, and framework-aligned. The progressive disclosure pattern is clever for token budgets, but it's CLI-only and community-supported, so don't expect official Anthropic backing.
- Security engineers automating incident response with AI agents
- Penetration testers using agents for red teaming playbooks
- Cloud security teams running audits and misconfiguration checks
- Threat hunters needing structured, agent-readable playbooks
- Beginners without cybersecurity background (steep learning curve)
- Teams needing a graphical user interface (CLI only)
- Users requiring official Anthropic support (community project)
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In short
Anthropic Cybersecurity Skills — 734+ structured cybersecurity skills for AI agents, MITRE-mapped. Best for Security engineers automating incident response with AI agents, Penetration testers using agents for red teaming playbooks, Cloud security teams running audits and misconfiguration checks. Free to use.
Viability Score
How likely is Anthropic Cybersecurity Skills to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- 734+ structured cybersecurity skills across 36 categories
- Mapped to MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF
- Progressive disclosure: YAML frontmatter (~40 tokens) + full body
- Works with Claude Code, GitHub Copilot, Cursor, Gemini CLI, Codex CLI, 26+ platforms
- Exact CLI commands and step-by-step workflow in each skill
- Covers cloud, threat hunting, DFIR, OT/ICS, red teaming, appsec, and more
- Easy install via npx, git clone, or manual directory copy
- Apache 2.0 open-source license
- Community-driven (not affiliated with Anthropic)
- Regular updates (last update visible on homepage)
- Includes MITRE ATT&CK technique IDs and CVE references
- Supports any agent that reads structured Markdown
- CLI-based, no graphical interface
About Anthropic Cybersecurity Skills
Anthropic Cybersecurity Skills is the largest open-source library of structured cybersecurity skills built for AI agents, now offering over 734 skills across 36 categories. Each skill follows the agentskills.io standard with YAML frontmatter (~40 tokens) for efficient discovery and full workflow steps when needed. The library covers cloud security, threat hunting, DFIR, red teaming, OT/ICS, and more, with skills mapped to MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, and NIST AI RMF. It works with Claude Code, GitHub Copilot, Cursor, Gemini CLI, Codex CLI, and 26+ platforms, requiring only Node.js 18+ and a Markdown-reading agent. The progressive disclosure pattern minimizes token waste: agents first scan the frontmatter to decide relevance, then load the full body on demand. Deploy via npx, git clone, or manual copy. Apache 2.0 licensed and community-driven (not affiliated with Anthropic). Unlike generic prompt libraries, these skills include exact CLI commands, MITRE technique IDs, and verification steps—turning any AI agent into a domain-specific security analyst.
Behind the Verdict
This isn't another prompt collection. Anthropic Cybersecurity Skills is the real deal for anyone running AI agents inside security operations. The progressive disclosure pattern—each skill exposes a ~40-token YAML header before the full workflow—is a smart token budget play. Agents can skip irrelevant skills without loading hundreds of lines. That matters when you're paying per token or working under context limits. The library is also impressively broad: 734 skills across 36 categories, from memory forensics with Volatility3 to AWS S3 audits to Kerberoasting with Impacket. Every skill maps to MITRE ATT&CK technique IDs and often to NIST CSF controls, which makes integration with existing compliance workflows easier. It works with 26+ platforms, but the sweet spot is Claude Code and similar agentic coding tools. Installation is dead simple: npx, git clone, or manual copy. It's Apache 2.0, so no licensing headaches. Where it bites: this is a CLI-only, community project. No GUI, no official support, no hand-holding. Beginners in cybersecurity will find the learning curve steep—these skills assume familiarity with tools like Volatility, Impacket, and AWS CLI. Also, the project name is misleading; it's not affiliated with Anthropic the company. If your organization has strict policies against open-source dependencies (unlikely but possible), you'll need to vet the code yourself. Compared to alternatives like Prompt Security or privately curated prompt libraries, this offers far more structure, but less hand-holding. The closest comparison is probably the agentskills.io ecosystem itself, but this repo is the largest collection of security-specific skills there. If you're a security engineer or penetration tester already using AI coding agents, install this. It will save you
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Use Cases
- Automate memory forensics analysis using Volatility3 with AI guidance
- Audit AWS S3 bucket security for public exposure and misconfigurations
- Execute Kerberoasting attacks with Impacket for penetration testing
- Perform network threat hunting using structured playbooks
- Map security findings to MITRE ATT&CK and NIST CSF frameworks for compliance
- Integrate structured skills into Claude Code for real-time security assistance
Limitations
- The project is community-maintained, so documentation may lag behind new skills.
- No official API or customer support is provided.
- Some skills may require specific tool installations (e.g., Volatility3, Impacket) that are not bundled.
Integrations
Resources & Guides
Official links
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