Builds a new Claude Code skill from scratch through a relentless, evidence-based interview that walks the skill's design tree decision-by-decision — entity fit, use cases, name, description, workflow steps, tools, and progressive-disclosure layout — then reviews the finished skill against the plugin-building guidance and applies every fix it finds. Use when creating, authoring, scaffolding, designing, or drafting a new skill or slash command. Does not build an agent or subagent — use agent-builder. Does not serve, vendor, or refresh the authoring guidance itself — use guidance.
$npx -y skills add testdouble/han --skill skill-builderInstalls into the current project.
Run `npx skills use "https://github.com/testdouble/han" --skill "testdouble/han/skill-builder"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/testdouble/han" that are relevant to the current task. Run `npx skills add "https://github.com/testdouble/han"` and select the relevant skills, then follow their instructions.