Skill Builder
Create, validate, and refine Claude Code skills.
Quick Start
- •Gather the capability, triggers, and required domain knowledge.
- •Choose a simple single-file skill or a multi-file skill with references.
- •Write
SKILL.mdwith concise, trigger-focused instructions. - •Add reference files only for detail that would otherwise bloat
SKILL.md. - •Validate YAML frontmatter, file layout, and naming.
- •Test the skill with the natural language users are likely to say.
Workflow
- •Start with requirements and scope control.
- •Design the structure before writing content.
- •Keep descriptions in third person and include trigger keywords.
- •Use progressive disclosure for long examples, templates, and validation details.
Validation
- •Keep
SKILL.mdunder 500 lines. - •Prefer one-level reference links.
- •Avoid time-sensitive guidance.
- •Confirm frontmatter is valid YAML.
- •Check that any
allowed-toolsentries are necessary and correct.
Advanced Reference
For the full workflow, templates, examples, and validation checklist, see references/skill-builder-guide.md.