Guides Claude through creating, packaging, and iterating on custom agent skills with progressive disclosure and bundled resources
npx skills add anthropics/skillsWhat It Is + Verdict
Skill Creator is Anthropic’s official guide for building your own agent skills. It documents the skill format, creation workflow, and packaging process — essential reading if you want to publish skills or customize existing ones.
The One Thing That Matters
The skill teaches progressive disclosure: skill metadata (name + description) is always in context, the SKILL.md body loads when the skill triggers, and bundled resources load on demand. This context-aware design is what keeps skill invocation fast — the model only reads what it needs.
What’s Actually Different
Most skill documentation assumes you learn by reading examples. Skill Creator provides a concrete 6-step process: understand, plan, initialize, edit, package, iterate. It ships with reference files for workflows and output patterns, and provides CLI tools (init_skill.py, package_skill.py) to automate the scaffolding. It treats skill authoring as a development workflow, not a writing exercise.
Who It’s For
Use it if you maintain multiple skills, want to package internal workflows as reusable capabilities, or need to teach others how to create skills. Skip it if you only consume existing skills and never author new ones — you do not need this installed.
Bottom Line
Skill Creator is the meta-skill for the agent skill ecosystem — it teaches you how to teach your agent.
Frequently Asked Questions
What is Skill Creator?
How to install Skill Creator?
npx skills add anthropics/skills