Skill Creator

A meta skill for building skills. If you're creating a new capability for Claude or refactoring an existing one, this lays out the full architecture: YAML frontmatter for triggering, markdown body for instructions, and optional bundled resources like scripts, references, and assets. The core insight here is progressive disclosure, keeping the always-loaded metadata lean while deferring detailed docs until Claude actually needs them. Particularly useful is the guidance on degrees of freedom, helping you decide whether to use prose instructions, pseudocode, or rigid scripts depending on how fragile the task is. Think of it as the construction manual for the other skills in this marketplace.

skills.sh installs: 1.7K
GitHub stars: 41.2K
last updated: Aug 21, 2026

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Install

$ npx -y skills add anthropics/financial-services --skill skill-creator --agent claude-code

Installs into .claude/skills of the current project.

Files

Skill Creator

This skill provides guidance for creating effective skills.

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

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

Core Principles

Concise is Key

The context window is a public good. Skills share the context window with everything else Claude needs: system prompt, conversation history, other Skills' metadata, and the actual user request.

SKILL.md on GitHub