Skill Creator
Walks you through building agent skills with the right structure: lean main instructions, supporting files in references and assets, and optional skillgrade evals for regression testing. The focus is progressive disclosure, so the agent only reads what it needs when it needs it. Use this when you're spinning up a new skill directory or tightening up metadata so the router can find it. The inline shell command advice is smart: only snapshot state when it actually improves the prompt, and keep it deterministic. If you're maintaining a skill library or building tools for Claude, this codifies the workflow so you're not reinventing structure every time.
- skills.sh installs
- 718
- GitHub stars
- 77
- last updated
- Aug 21, 2026
Install
$ npx -y skills add cap-go/capgo-skills --skill skill-creator --agent claude-codeInstalls into .claude/skills of the current project.
Files
Skill Authoring
Write skills that load at the right moment, teach what the model does not already know, and prove their own results.
When to Use
TRIGGER when:
- The user creates a skill directory, or asks to improve, review, or split an existing skill.
- A skill triggers too often, too rarely, or collides with a sibling skill.
bun run lint-skillsfails, or a skill must be registered in a plugin or the marketplace.- The user wants a skillgrade eval for a skill.
Do not use when:
- The user is writing app docs, a README, a changelog, or marketing copy.
- The user is editing library or plugin source that is not a skill.
Reference Index
Only load a reference when its topic is in play.
| File | Load when |
|---|---|
references/repo-layout.md | Adding, renaming, or registering a skill in this repository, mirroring into plugins/, or reading lint errors |
references/authoring-patterns.md | Writing the body: trigger design, reference index, traps, verification, version tags, subagent skills, project inspection |
Procedure
1. Scope the skill
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- Repository
- github.com/cap-go/capgo-skills
- Categories
- Documentation, AI & Agent Building, Skill Development
- First seen
- Jun 3, 2026
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