ClaudSkills / Science & Research / science-misc

Legion Memory

Q: What is a Claude Code skill and how does the Legion Memory 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. Legion Memory 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: 2026-06-08

Auto-triggered skill that reminds agents of the recall-before-grep doctrine. When an agent is about to search the codebase for answers, this skill reminds them to check legion memory first. Use this when the agent is researching a problem, looking for patterns, or trying to understand why something was built a certain way.

From the source SKILL.md

Before searching the codebase, check legion memory. Code tells you WHAT exists. Legion tells you WHY it exists, WHAT went wrong last time, and WHAT the person who solved it wished they had known.

What this skill does

Legion Memory 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/legion-memory/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Legion Memory 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/legion-memory
curl -L https://claudskills.com/skills/legion-memory/SKILL.md \
  -o ~/.claude/skills/legion-memory/SKILL.md

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

Skills live at ~/.claude/skills/legion-memory/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\legion-memory\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 Legion Memory Claude Code skill?

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

What does the Legion Memory 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 Legion Memory skill?

Use Legion Memory 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 Legion Memory" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the Legion Memory 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. Legion Memory 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/runlegion/legion/blob/HEAD/plugin/skills/legion-memory/SKILL.md
License: MIT
Author: runlegion
Website: https://runlegion.dev

Cite this skill

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

APA

runlegion. (2026). Legion Memory [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/legion-memory/

BibTeX

@misc{legion-memory-2026,
  author    = {runlegion},
  title     = {Legion Memory [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/legion-memory/}
}

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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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