S Tier Skills — Development skill for Claude Code

S-Tier Skills

Only the Claude skills that are actually worth installing.

	superpowers · security-audit-skill · humanizer · i-have-adhd
	the other ~10,000

Yes, only one row has anything in it. That is the entire point.

A skill gets a spot by showing the same prompt run with and without it. If you can't see the difference in five seconds, it goes in the bottom row with everyone else.

Contents

• Engineering
• Security
• Writing
• Accessibility
• The bar
• Install
• Contribute

Engineering

[superpowers](https://github.com/obra/superpowers)

Spec → plan → execute, with the verification step it can't skip.

**You:** *Add rate limiting to the API*

Without	With
Writes a middleware. Says "Done! ✅". It is untested and the limit is wrong.	Asks 6 questions → writes spec.md → 9-task plan → runs in a git worktree → each task test-first → halts at task 4 because the test genuinely fails.

The win: it can't tell you it's finished when it isn't.

Security

[security-audit-skill](https://github.com/cloudflare/security-audit-skill)

Every finding goes to a second agent whose only job is to disprove it.

**You:** *Audit this repo*

Without	With
32 "potential vulnerabilities". You spend 3 hours finding out 28 are noise.	findings.json: 4 confirmed, 9 need validation, 19 discarded — a fresh agent dis