Skills for Real Engineers. Straight from my .agents directory.
marginaleffects
Agent skill frombrycewang-stanford/Auto-Empirical-Research-Skills
Manual for the marginaleffects R and Python package, and guide to the book "Model to Meaning". Use when users ask about predictions, comparisons, slopes, marginal effects, average treatment effects (ATE/ATT/CATE), hypothesis testing, contrasts, counterfactuals, risk ratios, odds ratios, causal inference with G-computation, or need help with marginaleffects functions like predictions(), comparisons(), slopes(), hypotheses(), datagrid(), avg_predictions(), avg_comparisons(), avg_slopes(), or plot functions.
How to install marginaleffects
npx skills add brycewang-stanford/Auto-Empirical-Research-Skills# or add only this skill to Claude Code: copy the folder
skills/39-vincentarelbundock-marginaleffects/
# into
~/.claude/skills/39-vincentarelbundock-marginaleffects/ (all projects)
.claude/skills/39-vincentarelbundock-marginaleffects/ (one project)
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