Anthropic Cybersecurity Skills Repository Trends on GitHub with Over 9,600 Stars
The Python-based repository mukul975/Anthropic-Cybersecurity-Skills has gained significant traction on GitHub, accumulating over 9,600 stars in a single month. It offers 817 structured cybersecurity skills for AI agents, mapped across six major security frameworks. As AI agents become more integrated into software development and operations, equipping them with standardized, framework-aligned security capabilities is crucial for AI safety and automated defense. This repository bridges the gap between AI agent execution and established cybersecurity standards like MITRE and NIST. The repository is licensed under Apache 2.0 and utilizes the agentskills.io open standard, making it compatible with over 20 platforms including Claude Code, GitHub Copilot, and Cursor. The skills span 29 security domains and are mapped to frameworks such as MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, and D3FEND.
## BACKGROUND
The agentskills.io standard, originally developed by Anthropic, provides a standardized framework for creating and sharing reusable AI agent capabilities. To address AI-specific vulnerabilities and defense strategies, organizations rely on specialized frameworks like MITRE ATLAS, which focuses on adversarial machine learning threats, and MITRE D3FEND, a knowledge graph of defensive countermeasures.