skill-development SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 4 indexed copies. Same content hash, so the same checks give both the same grade.

skill-development from anthropics/claude-plugins-official is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add anthropics/claude-plugins-official/skill-development@v0.1.0

Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

anthropics/claude-plugins-official

Path

plugins/plugin-dev/skills/skill-development/SKILL.md

Versions recorded

3

Latest version

v0.1.0, committed Feb 5, 2026

First version recorded

Nov 20, 2025

Size

22,825 bytes

Repository stars

43,118

License

Apache-2.0

This skill should be used when the user wants to "create a skill", "add a skill to plugin", "write a new skill", "improve skill description", "organize skill content", or needs guidance on skill structure, progressive disclosure, or skill development best practices for Claude Code plugins.

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

# Skill Development for Claude Code Plugins

This skill provides guidance for creating effective skills for Claude Code plugins.

## About Skills

Skills are modular, self-contained packages that extend Claude's capabilities by providing
specialized knowledge, workflows, and tools. Think of them as "onboarding guides" for specific
domains or tasks—they transform Claude from a general-purpose agent into a specialized agent
equipped with procedural knowledge that no model can fully possess.

### What Skills Provide

1. Specialized workflows - Multi-step procedures for specific domains
2. Tool integrations - Instructions for working with specific file formats or APIs
3. Domain expertise - Company-specific knowledge, schemas, business logic
4. Bundled resources - Scripts, references, and assets for complex and repetitive tasks

### Anatomy of a Skill

Every skill consists of a required SKILL.md file and optional bundled resources:

```
skill-name/
├── SKILL.md (required)
│   ├── YAML frontmatter metadata (required)
│   │   ├── name: (required)
│   │   └── description: (required)
│   └── Markdown instructions (required)
└── Bundled Resources (optional)
…

Read the whole file at its exact version.

How to install

mdr add anthropics/claude-plugins-official/skill-development@sha256:d51b4e20043b13e4

[![mdr](https://markdownregistry.com/badge/art_tw3qopurhtiwwmfm.svg)](https://markdownregistry.com/a/art_tw3qopurhtiwwmfm)

Versions

The registry has recorded 3 versions of this file, between Nov 20, 2025 and Feb 5, 2026, about one every 38 days.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_tw3qopurhtiwwmfm
GET https://markdownregistry.com/api/v1/resolve?ref=anthropics/claude-plugins-official/skill-development
GET https://markdownregistry.com/api/v1/blob/d51b4e20043b13e462aa86c47ea82d43e216eb292871538127f4b12a54e4944f

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.

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