ClaudSkills / Science & Research / research-methods

marginaleffects

Q: What is a Claude Code skill and how does the marginaleffects skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. marginaleffects is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Science & Research · Sub-category: research-methods · Last updated: 2026-05-28

lang:python

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.

About this skill (catalog notes)

marginaleffects includes worked examples; at least one code block. The SKILL.md runs to about 941 words, in the catalog's typical mid-range.

Source: copaper.ai
Original author: brycewang-stanford
Indexed lastmod: 2026-05-28
Catalog position: Science & Research · research-methods
Indexed related skills: 10

How marginaleffects fits the catalog

marginaleffects sits in the Science & Research category under the research-methods sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Primary source of information: https://marginaleffects.com Free book, case studies, and vignettes are available there.

What this skill does

marginaleffects is a community-contributed Claude Code skill in the research-methods sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/vincentarelbundock-marginaleffects/ and loads when your prompt matches the skill's trigger.

When to invoke it: 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.

Who uses this skill

The marginaleffects Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 93,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/vincentarelbundock-marginaleffects
curl -L https://claudskills.com/skills/vincentarelbundock-marginaleffects/SKILL.md \
  -o ~/.claude/skills/vincentarelbundock-marginaleffects/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/vincentarelbundock-marginaleffects/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/vincentarelbundock-marginaleffects/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\vincentarelbundock-marginaleffects\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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See pricing → Download desktop app

Frequently asked questions

How do I install the marginaleffects Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/vincentarelbundock-marginaleffects/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the marginaleffects skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the marginaleffects skill?

Use marginaleffects when your Claude Code task falls under the Science & Research category — specifically in the research methods area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use marginaleffects" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the marginaleffects skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. marginaleffects is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/brycewang-stanford/Auto-Empirical-Research-Skills/blob/HEAD/skills/39-vincentarelbundock-marginaleffects/SKILL.md
Author: brycewang-stanford
Website: https://copaper.ai

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

brycewang-stanford. (2026). marginaleffects [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/vincentarelbundock-marginaleffects/

BibTeX

@misc{vincentarelbundock-marginaleffects-2026,
  author    = {brycewang-stanford},
  title     = {marginaleffects [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/vincentarelbundock-marginaleffects/}
}

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