Answers a question from data with a result that can be defended: fixes the question, the observation grain, the denominator and the baseline before choosing a method, validates along the deployment boundary without leakage, and reports effect size with uncertainty and what the evidence does not show. Hands back a rerunnable analysis script and a filled report.
Install
npx skills add rhawk117/rygentic-harness --skill data-analysisnpx skills add rhawk117/rygentic-harness --skill data-analysis -a claude-code -gnpx skills add rhawk117/rygentic-harness --skill data-analysis -a codex -ggemini skills install https://github.com/rhawk117/rygentic-harness.git --path plugins/python-harness/skills/data-analysisgh skill install rhawk117/rygentic-harness data-analysisgit clone --depth 1 https://github.com/rhawk117/rygentic-harness /tmp/rhawk117__rygentic-harness
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/rhawk117__rygentic-harness/plugins/python-harness/skills/data-analysis ~/.claude/skills/data-analysis # Claude Code
cp -R /tmp/rhawk117__rygentic-harness/plugins/python-harness/skills/data-analysis ~/.agents/skills/data-analysis # Codex, Cursor, Gemini CLI, Copilot, OpenCode