What is a Claude Code Skill?

A specialized capability that extends Claude's behavior, providing domain-specific guidance, tools, and implementation patterns within a plugin structure.

What is the benefit of the progressive disclosure design principle?

It manages context efficiency by loading only necessary information in layers: metadata first, then the core SKILL.md body, and finally specific resources only as needed.

When should I use reference files instead of the main SKILL.md?

Reference files should be used for detailed schemas, API documentation, or long policies to keep the main SKILL.md lean and prevent it from hogging the context window.

Can skills include executable code?

Yes, skills can include a 'scripts' directory for executable code (Python, Bash, etc.) to handle tasks requiring deterministic reliability or to save tokens on repetitive coding tasks.

How are skills triggered in Claude Code?

Skills are triggered automatically when a user's query matches the specific phrases or intents defined in the YAML frontmatter description of the SKILL.md file.

Skill Development for Claude Code

Name: Skill Development for Claude Code
Author: anthropics

byanthropics

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291

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開発者ツール

Provides standardized guidance and best practices for creating, structuring, and optimizing specialized skills within Claude Code plugins.

This skill acts as an onboarding guide and architectural framework for developers building Claude Code plugins. It provides procedural knowledge for creating modular skills, defining effective trigger phrases, and implementing the progressive disclosure design principle. By utilizing this skill, developers can transform Claude into a specialized agent capable of handling complex workflows through organized scripts, reference documentation, and reusable assets while maintaining high context window efficiency.

主な機能

01Progressive disclosure patterns for context management

02Standardized skill directory structure templates

03291 GitHub stars

04Best practices for YAML frontmatter and trigger phrase optimization

05Step-by-step workflows for skill creation and validation

06Guidance for organizing bundled resources like scripts and assets

ユースケース

01Refactoring large skill files into a lean structure using reference files

02Developing a new domain-specific skill for a custom Claude Code plugin

03Optimizing an existing skill's metadata to improve trigger reliability

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add anthropics/claude-plugins-official skill-development

For use in Claude.ai and ChatGPT

Download Skill