dev-software-design SKILL.md skillA
dev-software-design from jackchuka/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jackchuka/skills/dev-software-design@git:20260604.0da3398Pins git:20260604.0da3398 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jackchuka/skills
- Path
dev-software-design/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260604.0da3398, committed Jun 4, 2026
- First version recorded
- Mar 17, 2026
- Size
- 6,772 bytes
- Repository stars
- 15
- License
- MIT
Opinionated guide to software design principles and architectural patterns. Use when reviewing code design, planning feature architecture, asking "is this the right design?", "how should I structure this?", or requesting design philosophy guidance. Triggers on questions about SOLID, DRY, KISS, YAGNI, Clean Architecture, DDD, hexagonal architecture, composition vs inheritance, coupling, cohesion, or any software design trade-off discussion.
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
# Software Design Philosophies Opinionated guidance on classic design principles and architectural patterns, with concrete code examples and trade-off analysis. ## When Applying Design Guidance 1. **Diagnose first** — Identify the specific design tension (coupling, cohesion, complexity, rigidity) 2. **Name the principle** — State which principle applies and why 3. **Show the trade-off** — Every principle has a cost; state it explicitly 4. **Demonstrate with code** — Before/after examples grounded in the user's codebase context ## Core Stance: Pragmatism Over Dogma - Principles are heuristics, not laws. Apply them when they reduce complexity; skip them when they add it. - Prefer boring, obvious code over clever, abstract code. - The best design is the simplest one that handles current requirements. Speculative generality is a code smell. - Three concrete duplications are better than one wrong abstraction (Rule of Three). ## Classic Principles Quick Reference | Principle | One-liner | Apply when... | Skip when... | …
Read the whole file at its exact version.
How to install
mdr add jackchuka/skills/dev-software-design@sha256:308d1ac47a5753e5The line at the top of this page pins the label git:20260604.0da3398, 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_vkn5pllo5dtrefjq)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Mar 17, 2026 and Jun 4, 2026, about one every 20 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260604.0da3398 latest | 2026-06-04 | 0da3398 | 6,772 B | A | view · diff |
| git:20260421.19f33a5 | 2026-04-21 | 19f33a5 | 6,754 B | A | view · diff |
| git:20260321.fb3b945 | 2026-03-21 | fb3b945 | 6,741 B | A | view · diff |
| git:20260318.2a81c51 | 2026-03-18 | 2a81c51 | 6,702 B | A | view · diff |
| git:20260317.1d7efb7 | 2026-03-17 | 1d7efb7 | 6,698 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 (6772 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
jackchuka/skills · 15 stars · license MIT · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_vkn5pllo5dtrefjq GET https://markdownregistry.com/api/v1/resolve?ref=jackchuka/skills/dev-software-design GET https://markdownregistry.com/api/v1/blob/308d1ac47a5753e5f449deedd6f71a4e4062d9541683cf2cd104da339777aa1d
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.