Design custom metric packs for plugin-eval so teams can add local evaluation rubrics that emit schema-compatible checks and metrics. Use when the user wants their own evaluation criteria or visualizations.
Install
npx skills add openai/plugins --skill metric-pack-designernpx skills add openai/plugins --skill metric-pack-designer -a claude-code -gnpx skills add openai/plugins --skill metric-pack-designer -a codex -ggemini skills install https://github.com/openai/plugins.git --path plugins/plugin-eval/skills/metric-pack-designergh skill install openai/plugins metric-pack-designergit clone --depth 1 https://github.com/openai/plugins /tmp/openai__plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/openai__plugins/plugins/plugin-eval/skills/metric-pack-designer ~/.claude/skills/metric-pack-designer # Claude Code
cp -R /tmp/openai__plugins/plugins/plugin-eval/skills/metric-pack-designer ~/.agents/skills/metric-pack-designer # Codex, Cursor, Gemini CLI, Copilot, OpenCode