sandi-metz-rules

This skill should be used when users request code review, refactoring, or code quality improvements for Ruby codebases. Apply Sandi Metz's four rules for writing maintainable object-oriented code - classes under 100 lines, methods under 5 lines, no more than 4 parameters, and controllers instantiate only one object. Use when users mention "Sandi Metz", "code quality", "refactoring", or when reviewing Ruby code for maintainability.

1.17x

Quality

78%

Does it follow best practices?

Impact

100%

1.17x

Average score across 3 eval scenarios

Securityby

Passed

No findings from the security scan

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Run	Type	Date	Status
baseline vs usage-spec With / without context 7 months ago Completed	With / without context	7 months ago	Completed

Eval run

019cc81e-b348-77ba-aeae-71c69a6e22d0

Run 7 months ago

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Repository: lucianghinda/superpowers-ruby
Path: skills/sandi-metz-rules/SKILL.md
Commit: 99fac3d

Evaluated: 7 months ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Ruby Code Quality Audit Ruby Codebase Health Review Rails Controller Cleanup and Enforcement Setup

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