st0012

Ruby Skills — Development skill for Claude Code

Development community

Claude Code plugins for Ruby development.

How to install Ruby Skills

This entry records only its repository, not the path inside it, so there is no exact command to give. Open st0012/ruby-skills and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Ruby Skills does

Claude Code plugins for Ruby development.

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README

Ruby Skills

Ruby's ecosystem has many version managers, a rapidly evolving typing and tooling landscape, and documentation scattered across multiple sources.

This Claude Code plugin helps Claude navigate each of these — activating the correct Ruby environment, pointing to authoritative docs, and avoiding common test framework pitfalls.

Installation

**From terminal:**

claude plugin marketplace add st0012/ruby-skills
claude plugin install ruby-skills@ruby-skills

**From a Claude session:**

/plugin marketplace add st0012/ruby-skills
/plugin install ruby-skills@ruby-skills

What to Expect

After installation, start a Claude Code session in any Ruby project — no configuration needed. The plugin activates automatically.

`ruby-version-manager`

Detects your version manager and project Ruby version, then activates it for every shell command. Supports chruby, rbenv, rvm, asdf, mise, rv, and shadowenv.

Reads .ruby-version, .tool-versions, .mise.toml, or Gemfile to determine the required version
Handles multi-manager environments — prompts you to set a preference if more than one is detected
Offers to install missing Ruby versions
Works around Claude Code's non-persistent shell by chaining activation with every command

See the [technical reference](plugins/ruby-skills/skills/ruby-version-manager/README.md) for detection internals.

`ruby-resource-map`

Points Claude to authoritative documentation sources so it doesn't hallucinate APIs or rely on outdated references.

Version-specific docs for Ruby 3.2–4.0 and master
Core vs bundled vs default gem distinctions
Ruby typing ecosystem: Sorbet (RBI) and RBS, including Tapioca, Spoom, Steep, and RBS inline comments
Blocks known-bad sources (ruby-doc.org, apidock.com)

`ruby-test-frameworks`

Divergence reference for minitest and test-unit — the two frameworks have deceptively similar APIs with critical naming differences that cause `NoMethodError` at runtim