language-ruby SKILL.md skillA
language-ruby from lugassawan/swe-workbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add lugassawan/swe-workbench/language-ruby@git:20260828.71a6399Pins git:20260828.71a6399 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- lugassawan/swe-workbench
- Path
skills/language-ruby/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260828.71a6399, committed Aug 28, 2026
- First version recorded
- May 29, 2026
- Size
- 4,563 bytes
- Repository stars
- 3
- License
- MIT
Ruby idioms — Ruby 3.x pattern matching, procs, Comparable, error handling, and testing. Auto-load when working with .rb files, Gemfile, Rakefile, gemspecs, or when the user mentions Ruby, blocks, procs, lambdas, or pattern matching.
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
## Ruby 3.x syntax
- Use pattern matching for structural dispatch on hashes, arrays, and domain data; avoid using it as a verbose `if/elsif`.
- Prefer endless methods only for tiny, obvious expressions. Multi-step behavior deserves a normal `def`.
- Hash shorthand (`{name:, email:}`) is clear when local names match keys; use explicit pairs when transformation happens.
- Use Ractor for isolated parallelism only when its object-sharing constraints fit better than threads or processes.
```ruby
case payload
in {type: "user_created", id:, email:}
create_user(id:, email:)
in {type: "user_deleted", id:}
delete_user(id)
else
raise ArgumentError, "unknown payload"
end
def active? = status == "active"
```
## Blocks, procs, and lambdas
- Blocks are the default for one-off callbacks and iteration; yield when the method owns the flow.
- `Proc` is lenient about arity and `return`; use it for flexible callbacks only when that behavior is intentional.
- Lambdas behave like methods for arity and return locally. Prefer them for stored callable behavior.
```ruby
def with_lock(lock)
lock.acquire
yield
ensure
lock.release
end
normalize = ->(value) { value.to_s.strip.downcase }
…Read the whole file at its exact version.
How to install
mdr add lugassawan/swe-workbench/language-ruby@sha256:636d97c7d3b9e61aThe line at the top of this page pins the label git:20260828.71a6399, 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.
[](https://markdownregistry.com/a/art_jtmz5kvghbvxpzla)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between May 29, 2026 and Aug 28, 2026, about one every 30 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.71a6399 latest | 2026-08-28 | 71a6399 | 4,563 B | A | view · diff |
| git:20260719.e1f78e0 | 2026-07-19 | e1f78e0 | 4,642 B | A | view · diff |
| git:20260623.a686e99 | 2026-06-23 | a686e99 | 4,365 B | A | view · diff |
| git:20260529.c291687 | 2026-05-29 | c291687 | 4,197 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4563 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
lugassawan/swe-workbench · 3 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jtmz5kvghbvxpzla GET https://markdownregistry.com/api/v1/resolve?ref=lugassawan/swe-workbench/language-ruby GET https://markdownregistry.com/api/v1/blob/636d97c7d3b9e61a3c738d455f759baeaba8cb95c04467ac53cbc6b725c54e14
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.