- CLI: npx git+https://... (ad-hoc) / npm i -g git+https://... (permanent) - skill: npx -y skills add https://... -g -y --copy (installs to ~/.zcode/skills + ~/.claude/skills + ~/.agents/skills + ~40 agents) - prefix trap documented: npm/npx NEED git+, skills add must NOT have it - install.sh kept as offline/no-npm fallback