ClaudSkills / Science & Research / math-stats

Universal Ma Codebook

Q: What is a Claude Code skill and how does the Universal Ma Codebook 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. Universal Ma Codebook 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: math-stats · Last updated: 2026-05-28

type:review

Universal Meta-Analysis Codebook v2.2 - AI-Human collaboration for meta-analysis data extraction. 4-layer design: Identifiers, Statistics, AI Provenance, Human Verification. Integrates with C5/C6/C7 agents and Category I systematic review pipeline. Triggers: meta-analysis, codebook, data extraction, Hedges g, effect size

From the source SKILL.md

Version: 2.2 Status: Production Codex Review: APPROVE WITH MINOR CHANGES (2026-01-26) Update: Context-specific extensions (2026-01-26)

What this skill does

Universal Ma Codebook is a community-contributed Claude Code skill in the math-stats sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/universal-ma-codebook/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Universal Ma Codebook 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/universal-ma-codebook
curl -L https://claudskills.com/skills/universal-ma-codebook/SKILL.md \
  -o ~/.claude/skills/universal-ma-codebook/SKILL.md

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

Skills live at ~/.claude/skills/universal-ma-codebook/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\universal-ma-codebook\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.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Universal Ma Codebook Claude Code skill?

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

What does the Universal Ma Codebook 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 Universal Ma Codebook skill?

Use Universal Ma Codebook when your Claude Code task falls under the Science & Research category — specifically in the math stats 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 Universal Ma Codebook" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the Universal Ma Codebook 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. Universal Ma Codebook 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/25-HosungYou-Diverga/skills/universal-ma-codebook/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). Universal Ma Codebook [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/universal-ma-codebook/

BibTeX

@misc{universal-ma-codebook-2026,
  author    = {brycewang-stanford},
  title     = {Universal Ma Codebook [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/universal-ma-codebook/}
}

Embed this skill

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Badge

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