Brain Score

Q: What is a Claude Code skill and how does the Brain Score 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 Score 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: general-misc · Last updated: 2026-07-22

type:audit

Score ANY repository 0-100 across 8 dimensions using the exact evidence-or-it-didn't-happen scorecard RuvNet-Brain applies to itself. Use when the user says "score this repo", "score my repo", "scorecard", "brain-score", "how good is this codebase", "rate this project", "audit quality", or asks for an honest 0-100 quality assessment of a repository. Every deduction must cite evidence from the actual repo; a known architectural flaw caps its dimension at ≤70; a "what I did NOT test" section is mandatory; all scores are out of 100, never out of 10.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Score the repo in front of you the way RuvNet-Brain scores itself: gates that could have failed, before scores that can be believed. A score is only real if the evidence behind it was collected by running real commands against the actual repo — never from memory, never from vibes, never from what the README promises.

What this skill does

Brain Score is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/brain-score/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user says "score this repo", "score my repo", "scorecard", "brain-score", "how good is this codebase", "rate this project", "audit quality", or asks for an honest 0-100 quality assessment of a repository. Every deduction must cite evidence from the actual repo; a known architectural flaw caps its dimension at ≤70; a "what I did NOT test" section is mandatory; all scores are out of 100, never out of 10.

Who uses this skill

The Brain Score 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 196,000+ 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-score
curl -L https://claudskills.com/skills/brain-score/SKILL.md \
  -o ~/.claude/skills/brain-score/SKILL.md

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

Skills live at ~/.claude/skills/brain-score/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\brain-score\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 Score Claude Code skill?

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

What does the Brain Score 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 Score skill?

Use Brain Score when your Claude Code task falls under the General category — specifically in the general 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 Brain Score" 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 Score 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 Score 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/.

Attribution & license

Source: https://github.com/stuinfla/ruvnet-brain/blob/HEAD/plugin/skills/brain-score/SKILL.md
Author: stuinfla
Website: https://isovision.ai/ruvnet-brain/

Cite this skill

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

APA

stuinfla. (2026). Brain Score [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/brain-score/

BibTeX

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

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/brain-score.svg)](https://claudskills.com/skills/brain-score/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/brain-score/#security)

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Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all General skills → Top 100 skills

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

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