Overview
Ctf Skills is an open-source security skill for Claude Code, Codex, Gemini CLI, and OpenCode, published by ljagiello. Its author describes it as: “Agent skills for solving CTF challenges - web exploitation, binary pwn, crypto, reverse engineering, forensics, OSINT, and more”. The project has 2.9k stars on GitHub and is available under the MIT license. Add it to your setup with `git clone https://github.com/ljagiello/ctf-skills ~/.claude/skills/ctf-skills`.
Installation
Add Ctf Skills to your agent with:
git clone https://github.com/ljagiello/ctf-skills ~/.claude/skills/ctf-skillsReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
- Claude Code — named in the skill.md
- Codex — named in the skill.md
- Gemini CLI — named in the skill.md
- OpenCode — named in the skill.md
License
Ctf Skills is published under the MIT license.
Strengths
- Clear MIT license — safe to read and adapt within its terms
- Established project with 2,881 GitHub stars
- Works with Claude Code, Codex, Gemini CLI, OpenCode
- Actively maintained — repository updated in the last 90 days
Author
Topics
Frequently asked questions
- What does Ctf Skills do?
- Agent skills for solving CTF challenges - web exploitation, binary pwn, crypto, reverse engineering, forensics, OSINT, and more
- How do I install Ctf Skills?
- Run git clone https://github.com/ljagiello/ctf-skills ~/.claude/skills/ctf-skills in your agent, then reload your skills. Review the source at https://github.com/ljagiello/ctf-skills before installing.
- Is Ctf Skills free to use?
- Yes. Ctf Skills is free and open source under the MIT license, so you can read, run, and adapt it within that license's terms.
- Which agents does Ctf Skills work with?
- Ctf Skills lists Claude Code, Codex, Gemini CLI, and OpenCode — named in its SKILL.md, its plugin marketplace or its repository topics. Skills use the portable SKILL.md format, so other agents that read that format may load it too.
