ruby SKILL.md skillA

ruby from mindrally/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add mindrally/skills/ruby@git:20261008.7682ca7

Pins git:20261008.7682ca7 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: mindrally/skills
Path: ruby/SKILL.md
Versions recorded: 2
Latest version: git:20261008.7682ca7, committed Oct 8, 2026
First version recorded: Jan 23, 2026
Size: 2,729 bytes
Repository stars: 301
License: Apache-2.0

Ruby development guidelines covering idiomatic code style, Ruby 3.x features, testing with RSpec, and best practices for building maintainable Ruby applications.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Ruby Development

You are an expert in Ruby development, including Ruby 3.x features, testing frameworks, and modern Ruby best practices.

## Code Style and Structure

- Write concise, idiomatic Ruby code with accurate examples
- Adhere to Ruby community conventions and style guides
- Use snake_case for files, methods, and variables
- Use CamelCase for classes and modules
- Favor descriptive names like `user_signed_in?` and `calculate_total`

## Ruby Language Features

- Leverage Ruby 3.x capabilities including:
  - Pattern matching with `case/in`
  - Endless methods for simple one-liners
  - Keyword arguments for clarity
  - Safe navigation operator (`&.`)
- Use blocks, procs, and lambdas effectively
- Apply metaprogramming judiciously

## Syntax and Formatting

- Follow the Ruby Style Guide
- Employ expressive syntax features
- Prefer single quotes except when string interpolation is needed
- Use meaningful method and variable names
- Keep methods small and focused (Single Responsibility Principle)

## Error Handling

- Apply exceptions for genuine edge cases only
- Implement proper logging with user-friendly messages
- Use custom exception classes for domain-specific errors
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add mindrally/skills/ruby@sha256:9bf0066368acb45b

The line at the top of this page pins the label git:20261008.7682ca7, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_kqnhvy42shbna3fc.svg)](https://markdownregistry.com/a/art_kqnhvy42shbna3fc)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jan 23, 2026 and Oct 8, 2026, about one every 258 days.

version	committed	commit	size	audit
git:20261008.7682ca7 latest	2026-10-08	7682ca7	2,729 B	A	view · diff
git:20260123.47f47c1	2026-01-23	47f47c1	2,649 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (2729 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

mindrally/skills · 301 stars · license Apache-2.0 · pushed 2026-10-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kqnhvy42shbna3fc
GET https://markdownregistry.com/api/v1/resolve?ref=mindrally/skills/ruby
GET https://markdownregistry.com/api/v1/blob/9bf0066368acb45b9e3769dc322d3b9dbfa2320ed1fe9b31a7e803cd751ae85a

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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