Design shotgun: generate multiple AI design variants, open a comparison board, collect structured feedback, and iterate. (gstack)
Install
npx skills add garrytan/gstack --skill design-shotgunnpx skills add garrytan/gstack --skill design-shotgun -a claude-code -gnpx skills add garrytan/gstack --skill design-shotgun -a codex -ggemini skills install https://github.com/garrytan/gstack.git --path design-shotgungh skill install garrytan/gstack design-shotgungit clone --depth 1 https://github.com/garrytan/gstack /tmp/garrytan__gstack
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/garrytan__gstack/design-shotgun ~/.claude/skills/design-shotgun # Claude Code
cp -R /tmp/garrytan__gstack/design-shotgun ~/.agents/skills/design-shotgun # Codex, Cursor, Gemini CLI, Copilot, OpenCode