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competition-jwt-claim-confusion

100 / 100 · Low risk

Fine to try.

By alicewe1/alice_skill (GitHub) · coding · 63 stars · scanned at commit 19a54ac

Internal downstream skill for ctf-sandbox-orchestrator. CTF-sandbox workflow for JWT, JWS, and JWE validation paths, header parsing, key selection, claim acceptance, audience and issuer checks, role derivation, and token-to-identity confusion bugs. Use when the user asks to inspect JWT headers or claims, key lookup, `kid` handling, `alg` confusion, audience or issuer validation, role claims, or explain how a token becomes accepted identity or privilege. Use only after `$ctf-sandbox-orchestrator…

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'competition-jwt-claim-confusion' ] || [ -L ~/.agents/skills/'competition-jwt-claim-confusion' ]; then echo 'A skill folder named competition-jwt-claim-confusion already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/alicewe1/alice_skill' "$d" && git -C "$d" checkout --quiet '19a54ac988e9929160334271f5c1924ddd9b227e' -- '_modules/competition-jwt-claim-confusion' && mkdir -p ~/.agents/skills && cp -R "$d"/'_modules/competition-jwt-claim-confusion' ~/.agents/skills/'competition-jwt-claim-confusion' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'competition-jwt-claim-confusion' ~/.claude/skills/'competition-jwt-claim-confusion' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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