design-patterns SKILL.md skillA
design-patterns from pantheon-org/tekhne is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pantheon-org/tekhne/design-patterns@git:20260923.7852cb4Pins git:20260923.7852cb4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pantheon-org/tekhne
- Path
skills/software-engineering/design-principles/design-patterns/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260923.7852cb4, committed Sep 23, 2026
- First version recorded
- Mar 4, 2026
- Size
- 10,280 bytes
- Repository stars
- 10
- License
- MIT
Select and apply structural design patterns (Strategy, Factory, Adapter, Observer, etc.) to reduce complexity in class design. Use when evaluating whether a pattern solves a concrete problem, refactoring conditional logic, dealing with too many if/else statements or code smells, resolving inheritance problems, or deciding how to structure classes.
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
# Design Patterns Structural design patterns for solving recurring design problems with proven solutions. ## When to Use - Eliminating complex conditional logic (if/else chains, switch statements) - Designing plugin/extension systems - Integrating external APIs or legacy systems - Separating concerns with clear interfaces - Evaluating whether a pattern solves a concrete problem ## When Not to Use - Class-level SOLID violations (use solid-principles) - Architectural boundary decisions (use clean-architecture) - Testing strategy configuration (use testable-design) - **NEVER apply patterns preemptively for imagined future needs** ## Pattern Selection Workflow ### Step 1: Identify the Design Problem **Output:** Concrete problem statement without pattern jargon. Ask: - What conditional logic or coupling exists? - What needs to vary independently? - What external system needs integration? **Example:** ```text Problem: Payment processing logic uses if/else chains to select processors. Adding new processors requires editing existing code (OCP violation). ``` ### Step 2: Evaluate Pattern Fit **Output:** Pattern choice with explicit win condition. …
Read the whole file at its exact version.
How to install
mdr add pantheon-org/tekhne/design-patterns@sha256:291314099cf2e767The line at the top of this page pins the label git:20260923.7852cb4, 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_i4hycgnrv7u5usxo)
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Versions
The registry has recorded 3 versions of this file, between Mar 4, 2026 and Sep 23, 2026, about one every 101 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260923.7852cb4 latest | 2026-09-23 | 7852cb4 | 10,280 B | A | view · diff |
| git:20260316.2d4c8cf | 2026-03-16 | 2d4c8cf | 8,355 B | A | view · diff |
| git:20260304.5d73d82 | 2026-03-04 | 5d73d82 | 8,376 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 (10280 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
pantheon-org/tekhne · 10 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_i4hycgnrv7u5usxo GET https://markdownregistry.com/api/v1/resolve?ref=pantheon-org/tekhne/design-patterns GET https://markdownregistry.com/api/v1/blob/291314099cf2e767f79939c6d1ff702b531267b6b5a1714c55263483bba6ee1d
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