7 Best Anthropic-Cybersecurity-Skills Alternatives in 2026 (Open Source)
Anthropic-Cybersecurity-Skills — 817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud. The largest open-source library of cybersecurity skills specifically structured for integration into AI agents.
These 7 open-source tools do the same job. They are ordered by how closely they match Anthropic-Cybersecurity-Skills, with live GitHub data so you can see which projects are actively maintained.
| Tool | GitHub stars | Stars / 30d | Last commit |
|---|---|---|---|
| Anthropic-Cybersecurity-Skills(original) | 33.6k | +2,802 | 2026-08-31 |
| Khazix Skills | 21.1k | +1,756 | 2026-09-30 |
| Skills | 179.2k | +26,254 | 2026-09-29 |
| Garden Skills | 12.7k | +1,059 | 2026-07-12 |
| Claude Code Skills & Plugins | 27.0k | +2,253 | 2026-08-26 |
| Skill_Seekers | 15.1k | +1,255 | 2026-09-30 |
| hermes-agent | 250.3k | +20,859 | 2026-09-30 |
| Distilly | 25.2k | +2,098 | 2026-09-12 |
1. Khazix Skills
数字生命卡兹克开源的 AI Skills 合集 | Agent Skills: leader（帮你定义目标）, neat-freak 洁癖, hv-analysis, khazix-writer & more — Claude Code, Codex & 40+ agents
What sets it apart: A collection of practical, tested agent skills following an open interoperability standard.
Best for: Developers looking to extend agent capabilities with pre-built modules; Users of Claude Code, Codex, or other compatible agents; Those wanting structured, reusable agent instructions
2. Skills
Public repository for Agent Skills
What sets it apart: Official Anthropic skill system for Claude with production-grade document skills (PDF/DOCX/PPTX/XLSX) and a standardized Agent Skills specification
Best for: Claude users wanting to extend capabilities with domain expertise; Teams building repeatable workflows in Claude; Developers creating Claude Code plugins
3. Garden Skills
ConardLi's open-source Skills collection, featuring web design, knowledge retrieval, image generation, and more.
What sets it apart: A curated, open-source collection of production-ready, modular skills specifically formatted for integration into AI coding agents.
Best for: developers building AI coding agents; adding modular functionality to coding assistants; prototyping agent capabilities quickly
4. Claude Code Skills & Plugins
380 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 380+ skills, customizable references, scripts)for Claude Code, Codex, Gemini C
What sets it apart: The most comprehensive open-source library of Claude Code skills and agent plugins covering 13 different coding agent platforms.
Best for: Extending AI coding agents with specialized skills; Adding enterprise domain expertise to coding workflows; Creating reusable agent personas for different business functions
5. Skill_Seekers
Convert documentation websites, GitHub repositories, and PDFs into Claude AI skills with automatic conflict detection
What sets it apart: Acts as a multi-source, multi-target data layer that automatically converts diverse inputs into structured knowledge for various AI systems.
Best for: Creating AI agent skills from documentation; Building RAG pipelines from diverse sources; Preparing structured knowledge for AI coding assistants
6. hermes-agent
The agent that grows with you
What sets it apart: Only agent with a built-in learning loop that creates skills from experience and improves them during use.
Best for: developers building self-improving agents; research on tool-calling models; multi-platform agent deployment
7. Distilly
Distilly — Distill how they think into reusable Skills for any Agent or Bot. Formerly Colleague Skill（原同事 Skill）.
What sets it apart: Focuses specifically on distilling human experience and judgment patterns into reusable agent components rather than general AI capabilities.
Best for: Preserving colleague knowledge and playbooks; Modeling public figures or mentors; Creating character profiles for agents
FAQ
- What are the best alternatives to Anthropic-Cybersecurity-Skills?
- The closest open-source alternatives to Anthropic-Cybersecurity-Skills are Khazix Skills, Skills and Garden Skills, followed by Claude Code Skills & Plugins, Skill_Seekers and hermes-agent. They are ranked by how closely they match what Anthropic-Cybersecurity-Skills does.
- Which Anthropic-Cybersecurity-Skills alternative is the most popular?
- hermes-agent has the most GitHub stars among Anthropic-Cybersecurity-Skills alternatives, with 250,306 stars.
- Which Anthropic-Cybersecurity-Skills alternative is the most actively maintained?
- By recent activity, hermes-agent (32,240 commits in the last 90 days) is the most actively developed alternative.