Security skills for Claude

Looking for the best security skills for Claude Code and other AI coding agents? This collection ranks 7 open-source security skills by a blend of GitHub popularity, licensing clarity, and how well each one documents what it does. Skills — sometimes called Agent Skills — are small, shareable bundles of instructions that an agent loads on demand to become better at a specific job, so a strong security skill can save you from re-explaining the same context in every session. The highest-ranked entries here, including Skills, Ctf Skills, Claude Red, pair an active repository with a real open-source license, which matters if you plan to adapt or redistribute them. Every listing links straight back to its original repository so you can read the source, check recent activity, and copy the exact install command. We refresh this ranking daily as stars, forks, and new releases change across the ecosystem.

7 Security skills

Best security picks →

Skills

Security

Trail of Bits Claude Code skills for security research, vulnerability detection, and audit workflows

6.3k trailofbits CC-BY-SA-4.0

Ctf Skills

Security

Agent skills for solving CTF challenges - web exploitation, binary pwn, crypto, reverse engineering, forensics, OSINT, and more

2.9k ljagiello MIT

Claude Red

Security

claude-red is a curated library of offensive security skills designed for the Claude skills system. Each skill is a structured SKILL.md file that primes Claude with expert-level methodology for a specific attack surface — from SQLi to shellcode, EDR evasion to exploit development.

2.8k SnailSploit MIT

Xget

Security

Ultra-high-performance, secure, all-in-one acceleration engine for developer resources

8.2k xixu-me AGPL-3.0

Claude BugHunter

Security

A Claude Code skill bundle for bug hunting and external red-team work - 82 skills, 15 slash commands, 681 disclosed-report patterns curated across 24 core vulnerability classes, plus enterprise identity + infrastructure attack matrices.

3.2k elementalsouls No license

SOTA Skills

Security

State-of-the-Art (2026) AI/LLM engineering skills/agents for building and auditing software — 40+ domain & language skills, BUILD/AUDIT modes, audit checklists.

8 martinholovsky CC-BY-4.0

Grc Library

Security

A documentation library for governance, risk, compliance, cybersecurity, privacy, resilience, AI assurance, and operational control practices + a Claude Code rules-and-skills pack distilled from maintaining it.

3 jposluns CC-BY-SA-4.0