ClaudSkills / Science & Research / science-misc

ML Ralph

Q: What is a Claude Code skill and how does the ML Ralph 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. ML Ralph 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: science-misc · Last updated: 2026-06-13

REQUIRED first step for ANY ML task. When user describes an ML problem, goal, experiment, or model improvement — ALWAYS invoke this skill BEFORE exploring code or planning. Triggers: ml-ralph, create prd, ml project, kaggle, implement model, improve model, train model, better model, new approach, experiment.

From the source SKILL.md

Help users create a PRD for their ML project through conversation.

What this skill does

ML Ralph is a community-contributed Claude Code skill in the science-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/ml-ralph/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The ML Ralph 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 116,000+ 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/ml-ralph
curl -L https://claudskills.com/skills/ml-ralph/SKILL.md \
  -o ~/.claude/skills/ml-ralph/SKILL.md

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

Skills live at ~/.claude/skills/ml-ralph/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\ml-ralph\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 ML Ralph Claude Code skill?

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

What does the ML Ralph 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 ML Ralph skill?

Use ML Ralph when your Claude Code task falls under the Science & Research category — specifically in the science misc 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 ML Ralph" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the ML Ralph 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. ML Ralph 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/pentoai/ml-ralph/blob/0a8f7e0bb2af51da2071ea9b5f40ad5e26168a50/.claude/skills/ml-ralph/SKILL.md
Author: pentoai

Cite this skill

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

APA

pentoai. (2026). ML Ralph [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/ml-ralph/

BibTeX

@misc{ml-ralph-2026,
  author    = {pentoai},
  title     = {ML Ralph [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/ml-ralph/}
}

Embed this skill

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Badge

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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