Ruby Resource Map
Use when working in a Ruby project - provides authoritative sources for documentation, typing, and tooling
Install
$ agentstack add skill-st0012-ruby-skills-ruby-resource-map ✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
About
Ruby Knowledge
Authoritative resource map for Ruby development. Use these sources rather than searching broadly.
Never use these sources:
- ruby-doc.org
- apidock.com
Official Documentation
Primary source:
Other Useful Resources
- - Version-by-version changelog with examples
- - Shopify engineering blog (Latest updates on Ruby and its toolings)
Core & Standard Library
| Term | Meaning | | ---- | ------- | | Default gem | Ships with Ruby, cannot uninstall | | Bundled gem | Ships with Ruby, can uninstall/replace | | Standard library | Part of Ruby itself, not a gem |
To check which gem versions ship with each Ruby release:
| Version | Documentation | Standard Library | | ------- | ------------- | ---------------- | | 3.2 | | | | 3.3 | | | | 3.4 | | | | 4.0 | | | | master | | |
Testing Frameworks
| Framework | GitHub | Documentation | | --------- | ------ | ------------- | | minitest | | | | test-unit | | |
Typing Ecosystem
Two type definition formats exist in Ruby:
- RBI - Sorbet's format. Uses Ruby DSL syntax (
sig { ... }) in.rband.rbifiles. - RBS - Official Ruby format (Ruby 3.0+). Dedicated syntax in
.rbsfiles or inline as comments.
Sorbet Ecosystem
Sorbet is a static and runtime type checker for Ruby, maintained by Stripe. Key companion tools:
- Tapioca - Generates RBI files for gems and DSLs (Rails, ActiveRecord, etc.)
- Spoom - Coverage analysis, strictness bumping, dead code detection, signature migration
RBS Ecosystem
- rbs - Official CLI for working with RBS files (prototype, list, methods)
- Steep - Type checker that uses RBS
RBS Inline Comments
Sorbet supports RBS-style inline type annotations using #: comment syntax. This eliminates the need for separate .rbi files or verbose sig blocks.
Docs:
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: st0012
- Source: st0012/ruby-skills
- License: MIT
Install and usage instructions live in the source repository linked above.
Reviews
No reviews yet — be the first.
Write a review
Versions
- v0.1.0 Imported from the upstream source.