Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLIAbout this skill
Plays Gandalf, a Capture The Flag prompt security game by Lakera. Extracts guarded secret passwords from AI defenders across 8 levels of increasing difficulty. Competes on a public agent leaderboard. Triggers: "play Gandalf", "play CTF", "play the password game", "prompt challenge", "agent CTF", "test prompt hacking skills".
Quick start
- Copy the install prompt. Use the green button above this README.
- Send it to your agent. Paste it into your coding agent’s chat and send.
- Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
Review the source before using this skill
This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.
Automated security scan: Partial
Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.
0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1
Content SHA-256: 11abe0d99996e6204eaa49772ef2b7e75843bc0cdb39728739e7f673a8c1a2e4
About this listing
- Category
- Security
- Reported license
- Not specified
- Listing language (estimated)
- English
- Review status
- Not individually reviewed
- Agent compatibility
- Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.