# Pattern

> Use when a project-specific coding pattern must be found, taught, applied, or maintained.

- Skill: `nmnmcc/pattern` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add nmnmcc/pattern`
- Raw SKILL.md: https://api.skillmd.com/api/skills/nmnmcc/pattern/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: nmnmcc (https://skillmd.com/u/nmnmcc)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/nmnmcc/pattern

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# Pattern

Use this skill for reusable project patterns that need evidence and a runnable teaching example. Before product-source changes, check the patterns owned by the project and follow every applicable one.

1. Inspect the relevant pattern children and their documented checks.
2. Apply an active pattern when its situation and boundary fit.
3. Create a candidate only when a real source case, transferable relation, and runnable example exist.
4. Keep code, checks, status, and teaching material in agreement.

Read [the detailed guide](references/guide.md) for qualification, approval boundaries, or work under `patterns/`. Tests, scripts, configuration, migrations, generated code, and docs examples stay outside the product-source gate.