Claude Code Skills
npx ccjk add sundial-org/github/skills
GitHub-backed item. Open the repository or install from its repo slug in Claude Code.
https://github.com/sundial-org/skills
https://github.com/sundial-org
sundial-org/github/skills
Claude Code superpowers: core skills library
Claude Code skill implementing Manus-style persistent markdown planning — the workflow pattern behind the $2B acquisition.
Official Claude Code compound engineering plugin