What is a Claude Code Skill?

A Claude Code Skill is a modular package that extends Claude's capabilities with specialized knowledge, tools, and workflows, acting as an onboarding guide for specific domains.

What should be included in the SKILL.md file?

The SKILL.md must contain YAML frontmatter (name and description) and core procedural instructions that guide Claude on how to use the skill's resources.

Why is the Progressive Disclosure principle important?

It manages the context window efficiently by only loading detailed instructions or resources when Claude specifically needs them, preventing context bloat.

How do I maintain a lean context window when building skills?

Keep SKILL.md under 500 lines, use concise examples over verbose explanations, and move detailed data into separate reference files loaded on-demand.

When should I use scripts versus reference files?

Use scripts for tasks requiring deterministic reliability or repetitive code execution. Use reference files for documentation, schemas, or policies that inform Claude's thinking.

Skill Creator

Name: Skill Creator
Author: vercel-labs

byvercel-labs

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13,483

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Developer Tools

Facilitates the development of modular Claude Code skills by providing standardized architectural patterns and context-optimization best practices.

Skill Creator is a foundational meta-skill designed to guide developers and AI agents through the process of building high-quality, context-efficient extensions for Claude Code. It establishes a structured framework for implementing specialized workflows, tool integrations, and domain-specific knowledge using a progressive disclosure design principle. By following these guidelines, users can create modular skills that include scripts, reference documentation, and assets while maintaining a lean context window for optimal AI performance and reliability.

Key Features

01Progressive disclosure design patterns for maximum context window efficiency

0213,483 GitHub stars

03Standardized skill architecture including SKILL.md, scripts, and references

04Framework for bundling reusable scripts, templates, and static assets

05Step-by-step workflow for skill initialization, implementation, and packaging

06Heuristics for setting appropriate degrees of freedom for AI autonomy

Use Cases

01Transforming repetitive manual coding tasks into reusable automated skill scripts

02Developing custom domain-specific skills for proprietary company workflows

03Structuring complex API documentation into reference files for efficient AI consumption

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add vercel-labs/agent-browser skill-creator

For use in Claude.ai and ChatGPT

Download Skill