eugeniughelbur

Jev Attack — Development skill for Claude Code

Development community

Attack your own gate with 300 prompt injections and report what got through.

How to install Jev Attack

Installs to ~/.claude/skills/eugeniughelbur-jev-engineering-jev-attack/SKILL.md

Terminal

mkdir -p ~/.claude/skills/eugeniughelbur-jev-engineering-jev-attack && curl -fsSL https://raw.githubusercontent.com/eugeniughelbur/jev-engineering/HEAD/commands/jev-attack.md -o ~/.claude/skills/eugeniughelbur-jev-engineering-jev-attack/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What Jev Attack does

description: Attack your own gate with 300 prompt injections and report what got through

Find out whether the gate holds before trusting it. This spends real money, about half a cent, so confirm first.

Tell the user what it will do and what it costs: roughly 300 calls against `typesafe/jev-1.13`, about $0.006, taking two to three minutes. Ask them to confirm.
Offer the quick version if they want a smaller bill:

uv run "${CLAUDE_PLUGIN_ROOT}/attack_test.py" --quick

Alternatives in Development

JWT Scan — JWT attack toolkit (offline) — alg:none forgery, RS256→HS256 algorithm confusion, weak-secret crack, static cl 4.5k ★
Quick Plan — Create a detailed implementation plan based on the user's requirements provided through the USER_PROMPT variab 3.4k ★
/surface — View the prioritized attack surface for a target 1.8k ★