Brain Operating System

Q: What is a Claude Code skill and how does the Brain Operating System 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. Brain Operating System is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: knowledge-mgmt · Last updated: 2026-05-21

Quick reference for operating within jonmagic's second-brain workspace. Use when working with files in the brain repository—provides directory structure, naming conventions, append-only norms, wikilink patterns, and file organization rules. Essential for understanding where to create files, how to name them, and how to maintain continuity with existing structures.

From the source SKILL.md

Navigation guide for jonmagic's second-brain workspace covering directory intents, naming conventions, and operational norms.

What this skill does

Brain Operating System is a community-contributed Claude Code skill in the knowledge-mgmt sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/brain-operating-system/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when working with files in the brain repository—provides directory structure, naming conventions, append-only norms, wikilink patterns, and file organization rules. Essential for understanding where to create files, how to name them, and how to maintain continuity with existing structures.

Who uses this skill

The Brain Operating System Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 119,000+ 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/brain-operating-system
curl -L https://claudskills.com/skills/brain-operating-system/SKILL.md \
  -o ~/.claude/skills/brain-operating-system/SKILL.md

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

Skills live at ~/.claude/skills/brain-operating-system/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\brain-operating-system\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 Brain Operating System Claude Code skill?

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

What does the Brain Operating System 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 Brain Operating System skill?

Use Brain Operating System when your Claude Code task falls under the General category — specifically in the knowledge mgmt 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 Brain Operating System" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Brain Operating System 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. Brain Operating System is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Cite this skill

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

APA

ClaudSkills. (2026). Brain Operating System [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/brain-operating-system/

BibTeX

@misc{brain-operating-system-2026,
  author    = {ClaudSkills},
  title     = {Brain Operating System [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/brain-operating-system/}
}

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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