Use when designing, changing, or reviewing user-facing interfaces or interaction flows, including API changes that alter visible states or recovery. Backend-only work without user-facing effects stays on its existing route.
Install
npx skills add GanyuanRan/Aegis --skill ui-ux-governancenpx skills add GanyuanRan/Aegis --skill ui-ux-governance -a claude-code -gnpx skills add GanyuanRan/Aegis --skill ui-ux-governance -a codex -ggemini skills install https://github.com/GanyuanRan/Aegis.git --path skills/ui-ux-governancegh skill install GanyuanRan/Aegis ui-ux-governancegit clone --depth 1 https://github.com/GanyuanRan/Aegis /tmp/GanyuanRan__Aegis
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/GanyuanRan__Aegis/skills/ui-ux-governance ~/.claude/skills/ui-ux-governance # Claude Code
cp -R /tmp/GanyuanRan__Aegis/skills/ui-ux-governance ~/.agents/skills/ui-ux-governance # Codex, Cursor, Gemini CLI, Copilot, OpenCode