Evil User Stories

Quality score: 70/100 · Category: Security · Sub-category: security-misc

Threat-model a feature described as a user story. Generates evil user stories (AS/I/SO format) mapped to MITRE CWE weaknesses, each paired with a concrete security control. Use when a user story describes a new feature to build (upload, email, search, API, auth, archive, etc.) and the goal is to identify what security controls must be implemented.

What this skill does

Evil User Stories is a production-ready Claude Code skill (quality score 70/100) in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/evil-user-stories/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when a user story describes a new feature to build (upload, email, search, API, auth, archive, etc.) and the goal is to identify what security controls must be implemented.

Who uses this skill

The Evil User Stories skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/evil-user-stories
curl -L https://claudskills.com/skills/evil-user-stories/SKILL.md \
  -o ~/.claude/skills/evil-user-stories/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/evil-user-stories/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/evil-user-stories/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\evil-user-stories\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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