Skill authoring best practices

> Learn how to write effective Skills that Claude can discover and use successfully.

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Skill authoring best practices

Learn how to write effective Skills that Claude can discover and use successfully.

Good Skills are concise, well-structured, and tested with real usage. This guide provides practical authoring decisions to help you write Skills that Claude can discover and use effectively.

For conceptual background on how Skills work, see the Skills overview.

Core principles

Concise is key

The context window is a public good. Your Skill shares the context window with everything else Claude needs to know, including:

The system prompt
Conversation history
Other Skills' metadata
Your actual request

Not every token in your Skill has an immediate cost. At startup, only the metadata (name and description) from all Skills is pre-loaded. Claude reads SKILL.md only when the Skill becomes relevant, and reads additional files only as

Skill authoring best practices

AI Skill Market Insights

Quick Start

Manual Installation

TEAR & SHARE

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Skill authoring best practices

Core principles

Concise is key

License

Skill Creator

Repomix Unmixer Skill

Creation Log: Systematic Debugging Skill

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