strong-types SKILL.md skillA
strong-types from jpcaparas/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jpcaparas/skills/strong-types@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jpcaparas/skills
- Path
skills/engineering/strong-types/SKILL.md- Versions recorded
- 2
- Latest version
- v1.0.0, committed Sep 25, 2026
- First version recorded
- Sep 12, 2026
- Size
- 14,310 bytes
- Repository stars
- 56
- License
- none declared
Passive skill enforcing strong typing when writing or reviewing PHP, TypeScript, Python, C#, Kotlin, Go, Rust, or other typed code. Bans any/mixed, untyped signatures, blind ??/|| fallback chains; prefers DTOs, enums, generics, strict flags. Do NOT force typing onto untyped languages.
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
# strong-types
Write, edit, and review code so every value has one knowable type at every point in the program. Type ambiguity is a defect: if the author cannot say what type an expression is without running the code, the code is not done.
## Passive Trigger
Load this skill in the background whenever a coding task touches a language with a real type system — static (C#, Java, Kotlin, Swift, Go, Rust, TypeScript) or gradual with mature tooling (PHP, Python, Ruby with Sorbet, Elixir with typespecs). Apply it to new code, edits, refactors, reviews, and implementation plans alike.
Keep it proportional: for small edits, run a silent type-ambiguity pass and mention only the decisions that change the implementation. Also load {{ skill:maintainable-code }} for general code quality when available. When the language or codebase has no usable type system, do not force the issue; consult `references/gradual-languages.md` for suitable alternatives.
## The Canonical Offense
```php
$image = $location->preview ?? $location->banner ?? $location->thumbnail;
```
…Read the whole file at its exact version.
How to install
mdr add jpcaparas/skills/strong-types@sha256:8298621a9b126f19The line at the top of this page pins the label v1.0.0, 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_6b6kysn647ehrrhn)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 12, 2026 and Sep 25, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-25 | 692d684 | 14,310 B | A | view · diff |
| v1.0.0 | 2026-09-12 | 938fe03 | 13,008 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 (14310 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
jpcaparas/skills · 56 stars · license none declared · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6b6kysn647ehrrhn GET https://markdownregistry.com/api/v1/resolve?ref=jpcaparas/skills/strong-types GET https://markdownregistry.com/api/v1/blob/8298621a9b126f194d28cadd553fda5bd49894b6d6a8fa210dc59ec400e10ddd
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.