# Create Skill

> Authoritative guide on how to architect, format, and structure new Anthropic Progressive Disclosure skills. Triggers: Use before creating OR modifying any `.agents/skills/**/*.md` files — Progressive Disclosure architecture (Map vs World Atlas), YAML frontmatter, skill structure. Complementary to `turn-memory-pre-flight` (load-runtime-effect dimension vs skill-shape dimension).

- Skill: `neomjs/create-skill` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add neomjs/create-skill`
- Raw SKILL.md: https://api.skillmd.com/api/skills/neomjs/create-skill/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: neomjs (https://skillmd.com/u/neomjs)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/neomjs/create-skill

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# Skill Creation Framework
If you are tasked with creating a new Agent Skill, you MUST immediately use the `view_file` tool to read and strictly adhere to `.agents/skills/create-skill/references/skill-authoring-guide.md` before creating any files. This prevents system prompt bloat and ensures future agents can parse your skill correctly.

**Source of Authority:** [ADR 0008: SKILL.md Anatomy and Authoring Contract](https://github.com/neomjs/neo/blob/dev/learn/agentos/decisions/0008-skill-anatomy-and-authoring-contract.md) — the graph-queryable canonical decision substrate for skill-shape (frontmatter contract, Map/Atlas split, manifest contract, anti-patterns). This skill's `references/skill-authoring-guide.md` is the procedural HOW-TO companion.