This is the meta-skill that generates other skills from structured JSON specifications. It's used by the auto-generation pipeline to build complete Claude CLI prompts that scaffold out a new skill directory with SKILL.md, references, scripts, and tests. The builder script reads your idea JSON, pulls in three reference files (structure guide, quality checklist, template), checks existing skills to avoid duplication, then outputs a prompt you pipe directly to `claude -p`. The honest take: it's scaffolding automation for a repository that takes skill creation seriously enough to encode conventions, quality rubrics, and dual-axis scoring into a reproducible pipeline. If you're hand-rolling skills, you probably don't need this. If you're batch-generating them, it keeps everything consistent.
npx skills add https://github.com/tradermonty/claude-trading-skills --skill skill-designer