What is a Claude Code Skill?

A Claude Code Skill is a specialized capability that enhances Claude's behavior by providing domain-specific guidance, best practices, and implementation patterns via a structured SKILL.md file.

What is the progressive disclosure system?

It is a three-level architecture (Metadata, SKILL.md body, and Referenced Files) that allows Claude to index hundreds of skills using minimal context, only loading detailed instructions when a skill is active.

Why is the YAML frontmatter important?

The YAML frontmatter contains the name and description that Claude's system prompt uses to autonomously decide which skill to load and activate based on your current task.

Where should I store my custom Claude skills?

Personal skills should be stored in ~/.claude/skills/[skill-name]/, while project-specific, team-shared skills should be placed in the project root at .claude/skills/[skill-name]/.

Claude Skill Builder

Name: Claude Skill Builder
Author: Activer007

byActiver007

Developer Tools

Streamlines the creation of standardized, production-ready Claude Code skills with optimized metadata and directory structures.

About

Claude Skill Builder is a specialized utility designed to help developers architect, organize, and optimize custom Claude Code Skills according to official specifications. It guides users through the implementation of the three-level progressive disclosure system, ensuring that custom AI capabilities remain context-efficient even when managing large libraries of skills. By automating the generation of mandatory YAML frontmatter and proper file hierarchies, this tool enables the creation of skills that Claude can autonomously discover and execute across CLI, web, and API interfaces.

Key Features

Best-practice validation for trigger conditions and keyword optimization
Progressive disclosure architecture implementation for context window efficiency
Automated YAML frontmatter generation for autonomous skill matching
Standardized directory scaffolding for personal and project-level skills
0 GitHub stars
Template-driven SKILL.md creation with multi-level instruction support

Use Cases

Converting flat instruction sets into high-performance, discovery-ready skills
Scaffolding custom domain-specific workflows for internal development teams
Optimizing context usage by breaking down large prompts into modular skill structures

About

Key Features

Best-practice validation for trigger conditions and keyword optimization
Progressive disclosure architecture implementation for context window efficiency
Automated YAML frontmatter generation for autonomous skill matching
Standardized directory scaffolding for personal and project-level skills
0 GitHub stars
Template-driven SKILL.md creation with multi-level instruction support

Use Cases

Converting flat instruction sets into high-performance, discovery-ready skills
Scaffolding custom domain-specific workflows for internal development teams
Optimizing context usage by breaking down large prompts into modular skill structures