Run any installed skill on several models at once — you, OpenAI Codex, OpenCode and whoever else the profile names — and show what each one made of it side by side. Every model gets the same prepared copy of the skill and works read-only. Use for "/multi:skill <name>", "run this skill on every model", "run <skill> through multi", or any skill whose answer you want from more than one model.
Install
npx skills add szarkans/multi --skill skillnpx skills add szarkans/multi --skill skill -a claude-code -gnpx skills add szarkans/multi --skill skill -a codex -ggemini skills install https://github.com/szarkans/multi.git --path skills/skillgh skill install szarkans/multi skillgit clone --depth 1 https://github.com/szarkans/multi /tmp/szarkans__multi
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/szarkans__multi/skills/skill ~/.claude/skills/skill # Claude Code
cp -R /tmp/szarkans__multi/skills/skill ~/.agents/skills/skill # Codex, Cursor, Gemini CLI, Copilot, OpenCode