Use when the user wants to check dataset quality, diagnose eval issues, or before running evolve. Checks size, difficulty distribution, dead examples, coverage, and splits. Auto-corrects issues found.
Install
npx skills add raphaelchristi/harness-evolver --skill harness:healthnpx skills add raphaelchristi/harness-evolver --skill harness:health -a claude-code -gnpx skills add raphaelchristi/harness-evolver --skill harness:health -a codex -ggemini skills install https://github.com/raphaelchristi/harness-evolver.git --path skills/healthgh skill install raphaelchristi/harness-evolver harness:healthgit clone --depth 1 https://github.com/raphaelchristi/harness-evolver /tmp/raphaelchristi__harness-evolver
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/raphaelchristi__harness-evolver/skills/health ~/.claude/skills/harness:health # Claude Code
cp -R /tmp/raphaelchristi__harness-evolver/skills/health ~/.agents/skills/harness:health # Codex, Cursor, Gemini CLI, Copilot, OpenCode