ruby-resource-map

Original：🇺🇸 English

Translated

Use when working in a Ruby project - provides authoritative sources for documentation, typing, and tooling

1installs

Added on2026-02-14

NPX Install

npx skill4agent add st0012/ruby-skills ruby-resource-map

Authoritative resource map for Ruby development. Use these sources rather than searching broadly.

Never use these sources:

Primary source: https://docs.ruby-lang.org/en/

https://rubyreferences.github.io/rubychanges/ - Version-by-version changelog with examples
https://railsatscale.com/ - Shopify engineering blog (Latest updates on Ruby and its toolings)

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

Version	Documentation	Standard Library
3.2	https://docs.ruby-lang.org/en/3.2/	https://docs.ruby-lang.org/en/3.2/standard_library_rdoc.html
3.3	https://docs.ruby-lang.org/en/3.3/	https://docs.ruby-lang.org/en/3.3/standard_library_rdoc.html
3.4	https://docs.ruby-lang.org/en/3.4/	https://docs.ruby-lang.org/en/3.4/standard_library_md.html
4.0	https://docs.ruby-lang.org/en/4.0/	https://docs.ruby-lang.org/en/4.0/standard_library_md.html
master	https://docs.ruby-lang.org/en/master/	https://docs.ruby-lang.org/en/master/standard_library_md.html

Two type definition formats exist in Ruby:

RBI - Sorbet's format. Uses Ruby DSL syntax (
```
sig { ... }
```
) in
```
.rb
```
and
```
.rbi
```
files.
RBS - Official Ruby format (Ruby 3.0+). Dedicated syntax in
```
.rbs
```
files or inline as comments.

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

Sorbet supports RBS-style inline type annotations using

#:

comment syntax. This eliminates the need for separate

.rbi

files or verbose

sig

blocks.