review-ruby-code

A command for reviewing Ruby and Rails code using Sandi Metz's object-oriented design rules and SOLID principles, a set of guidelines for maintainable software design.

In plain words
What is it for?
Use it on the current branch to review changed Ruby or Rails files, run RubyCritic and SimpleCov, and produce a REVIEW.md report with links to the relevant code.
Why use it?
It provides a structured review of code changes and checks both design quality and Rails-specific concerns. It also runs code-quality and test-coverage checks as part of the review.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/el-feo/ai-context/review-ruby-code
Clone the repo
git clone --depth 1 https://github.com/el-feo/ai-context
Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 248 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00014 $0.00248
Opus 5 $0.00007 $0.00124
Sonnet 5 $0.00003 $0.00050
Haiku 4.5 $0.00001 $0.00025

Measured 2d ago against content hash b4d7c2c4ad5c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

review-ruby-code scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/ruby-rails/commands/review-ruby-code.md · 30 lines

What it actually says

This routes to specialized skill containing OOP design principles, Rails patterns, security checks, and code review best practices. The skill will analyze changed files in the current branch, run rubycritic and simplecov, and generate a comprehensive REVIEW.md with VSCode-compatible links.

<success_criteria>

  • Skill successfully invoked
  • Arguments passed correctly to skill
  • REVIEW.md generated with comprehensive code review
  • All code references have VSCode-compatible links </success_criteria>
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 30 lines · 14 tokens per session scan A b4d7c2c4ad5c

Subscribe to this mod's changes

review-ruby-code is a command published in the GitHub repository el-feo/ai-context (12 stars, last pushed 1mo ago), licensed MIT. It adds 14 tokens to every session and 248 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.