principle-design-patterns SKILL.md skillA
principle-design-patterns 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/principle-design-patterns@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/principle-design-patterns/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260828.71a6399, committed Aug 28, 2026
- First version recorded
- Apr 21, 2026
- Size
- 3,551 bytes
- Repository stars
- 3
- License
- MIT
Design patterns — Gang of Four and beyond. Strategy, factory method, observer, adapter, template method, dependency injection. Auto-load when designing class structure, or evaluating whether a pattern applies.
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
<!-- preload-canary: SWB-PRELOAD-PRINCIPLE-DESIGN-PATTERNS --> # Design Patterns — the ones worth knowing Patterns are vocabulary, not goals. Reach for one only when the problem it solves is actually present. ## Strategy **Problem:** an algorithm varies independently of its caller. **Use when:** multiple interchangeable behaviors selected at runtime (pricing rules, compression, sort orders). **Overkill when:** there is only one strategy. **Modern alternative:** a first-class function or lambda. ## Factory Method **Problem:** construction is non-trivial or must be swappable. **Use when:** the concrete type depends on input or config. **Overkill when:** `new Thing()` works and always will. **Modern alternative:** a constructor function plus DI at the composition root. ## Observer **Problem:** many objects need to react to a state change. **Use when:** loose coupling between emitter and listeners (UI, domain events). **Overkill when:** one listener, ever — call it directly. **Modern alternative:** language-native events, reactive streams, domain events on a bus. ## Decorator **Problem:** add behavior without subclassing the world. …
Read the whole file at its exact version.
How to install
mdr add lugassawan/swe-workbench/principle-design-patterns@sha256:aae11f626f58dae7The 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_lhk3t5ahrhpsogx2)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 21, 2026 and Aug 28, 2026, about one every 32 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.71a6399 latest | 2026-08-28 | 71a6399 | 3,551 B | A | view · diff |
| git:20260725.074b496 | 2026-07-25 | 074b496 | 3,621 B | A | view · diff |
| git:20260612.18c085a | 2026-06-12 | 18c085a | 3,558 B | A | view · diff |
| git:20260421.54db3b9 | 2026-04-21 | 54db3b9 | 3,357 B | A | view · diff |
| git:20260421.50ac048 | 2026-04-21 | 50ac048 | 3,347 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 (3551 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_lhk3t5ahrhpsogx2 GET https://markdownregistry.com/api/v1/resolve?ref=lugassawan/swe-workbench/principle-design-patterns GET https://markdownregistry.com/api/v1/blob/aae11f626f58dae78946960783b9b37e4bb9551fdb6204fd94d291ca27953655
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.