TL;DR
An open-source library providing 754 structured skills for AI agents to perform cybersecurity tasks.
Key features
754 skills: Covering 26 security domains (breach analysis, forensics, cloud security, etc.)
5 framework mappings: Each skill mapped to MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, and NIST AI RMF
agentskills.io standard compliance: Structured JSON format for easy use by AI agents
26+ platform compatibility: Supports Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI, and more
When to use it
When you need to inject specialized security knowledge (incident response, vulnerability analysis, cloud security, etc.) into AI agents
When automating security operations and requiring agents to make decisions based on frameworks like MITRE ATT&CK
When a single skill library integrating multiple security frameworks is needed