Web performance regression detection. (gstack)
Install
npx skills add garrytan/gstack --skill benchmarknpx skills add garrytan/gstack --skill benchmark -a claude-code -gnpx skills add garrytan/gstack --skill benchmark -a codex -ggemini skills install https://github.com/garrytan/gstack.git --path benchmarkgh skill install garrytan/gstack benchmarkgit clone --depth 1 https://github.com/garrytan/gstack /tmp/garrytan__gstack
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/garrytan__gstack/benchmark ~/.claude/skills/benchmark # Claude Code
cp -R /tmp/garrytan__gstack/benchmark ~/.agents/skills/benchmark # Codex, Cursor, Gemini CLI, Copilot, OpenCode