Agent skill

Brain

Read/write brain files (Obsidian vault at brain/). An agent skill from poteto/noodle.

MITAuto-check passedKnowledge Management

Install Brain

skills CLI

$ npx skills add poteto/noodle --skill brain -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install poteto/noodle brain --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/poteto/noodle.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/brain .claude/skills/brain && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "brain" agent skill from https://github.com/poteto/noodle/tree/main/.agents/skills/brain into .claude/skills/brain/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "brain", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/poteto/noodle/tree/main/.agents/skills/brain

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add poteto/noodle --skill brain -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install poteto/noodle brain --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/poteto/noodle.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/brain .agents/skills/brain && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "brain" agent skill from https://github.com/poteto/noodle/tree/main/.agents/skills/brain into .agents/skills/brain/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "brain", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add poteto/noodle --skill brain -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install poteto/noodle brain --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/poteto/noodle.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/brain .cursor/skills/brain && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "brain" agent skill from https://github.com/poteto/noodle/tree/main/.agents/skills/brain into .cursor/skills/brain/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "brain", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/poteto/noodle.git --path .agents/skills/brain

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add poteto/noodle --skill brain -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install poteto/noodle brain --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/poteto/noodle.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/brain .gemini/skills/brain && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "brain" agent skill from https://github.com/poteto/noodle/tree/main/.agents/skills/brain into .gemini/skills/brain/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "brain", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install poteto/noodle brain

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add poteto/noodle --skill brain -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/poteto/noodle.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/brain .github/skills/brain && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "brain" agent skill from https://github.com/poteto/noodle/tree/main/.agents/skills/brain into .github/skills/brain/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "brain", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add poteto/noodle --skill brain -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install poteto/noodle brain --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/poteto/noodle.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/brain .opencode/skills/brain && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "brain" agent skill from https://github.com/poteto/noodle/tree/main/.agents/skills/brain into .opencode/skills/brain/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "brain", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: brain
GitHub stars: 437
Token cost: ~860 tokens
SKILL.md length: 305 words
Files: 1
Skills in repo: 26
Repo updated: Mar 19, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Read/write brain files (Obsidian vault at brain/). An agent skill from poteto/noodle.

Any task that persists knowledge — reflection
SKILL.md covers Before Writing, Structure, Wikilinks and Writing Style, plus 3 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
After debugging sessions

What it does

Brain is an agent skill from poteto/noodle. Read/write brain files (Obsidian vault at brain/). Use for any task that persists knowledge — reflection, planning, or direct edits. Triggers after debugging sessions, mistakes, corrections, architectural decisions, or any insight worth preserving across sessions. Use on 'add to brain', 'remember this', 'write a note', or brain/ modifications.

Its SKILL.md is about 860 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Knowledge Management. It works with Obsidian. The repository describes itself as: Orchestrate agents using skills. The licence is MIT.

When your agent uses it

Any task that persists knowledge — reflection
After debugging sessions
Architectural decisions
Any insight worth preserving across sessions

Example prompts

“add to brain”
“remember this”
“write a note”
“/brain”

What it can do on your machine

Read from SKILL.md and the folder at commit 82d2921. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Brain loads about 860 tokens when it runs. Until then it costs about 88 tokens; SKILL.md has 305 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~88
When it runs · the whole SKILL.md, loaded when a task matches: ~860

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from poteto/noodle at commit 82d2921, republished under its MIT licence (© poteto). 305 words, ~860 tokens.

Download SKILL.mdSave it as .claude/skills/brain/SKILL.md (or your agent's skills folder).

name: brain
description: Read/write brain files (Obsidian vault at brain/). Use for any task that persists knowledge — reflection, planning, or direct edits. Triggers after debugging sessions, mistakes, corrections, architectural decisions, or any insight worth preserving across sessions. Use on 'add to brain', 'remember this', 'write a note', or brain/ modifications.

Brain

Persistent memory across sessions. Obsidian vault at brain/.

The brain is the foundation of the entire workflow — every agent, skill, and session reads it. Low-quality or speculative content degrades everything downstream. Before adding anything, ask: "Does this genuinely improve how the system operates?" If the answer isn't a clear yes, don't write it.

Before Writing

Read brain/index.md first. Then read the relevant entrypoint for your topic:

brain/principles.md for principle updates
brain/plans/index.md for plan-related notes

For directories without a dedicated index file yet (brain/codebase/, brain/audits/), scan nearby files directly and edit an existing note when possible.

Structure

brain/
├── index.md              ← root entry point, links to everything
├── principles.md         ← index for principles/
├── todos.md              ← product backlog
├── vision.md             ← elevator pitch + link to architecture
├── architecture.md       ← full technical reference
├── principles/           ← engineering and design principles
├── codebase/             ← project-specific knowledge and gotchas
├── plans/                ← numbered feature plans (02-arrow-bindings/, etc.)
└── audits/               ← design and quality audits (date-prefixed filenames, e.g. 2026-02-20-quality-audit.md)

Rules:

One topic per file. brain/codebase/noodle-spawn-gotchas.md, not a mega-file.
Maintain existing index entrypoints: brain/index.md, brain/principles.md, brain/plans/index.md.
If you introduce a new top-level category, add an index-style entrypoint for it (links only, no inlined content).
brain/index.md is the root. Every brain file must be reachable from it.
File names: lowercase, hyphenated. worktree-gotchas.md.
Plan directories: prefixed with the todo ID from brain/todos.md. 02-arrow-bindings/ with overview.md and phase-N-*.md inside.

Wikilinks

Format: [[section/file-name]]. Resolution order: same directory, then relative path, then vault root. Heading anchors ([[file#heading]]) are stripped during resolution.

Writing Style

Bullets over prose. No preamble.
Plain markdown with # Title. No Obsidian frontmatter.
Keep notes under ~50 lines. Split if longer.

After Writing

Update brain/index.md for any files you added or removed. Also update the relevant entrypoint (brain/principles.md, brain/delegation.md, or brain/plans/index.md) when applicable. Keep indexes link-only and scannable.

Durability Test

Ask: "Would I include this in a prompt for a different task?"

Yes → write to brain/. It's durable knowledge.
No, it's plan-specific → update the plan's phase doc instead.
No, it's a skill issue → update the skill file directly.
No, it needs follow-up work → file a todo with the todo skill.

Maintenance

Delete outdated or subsumed notes.
Delete random-named files in brain/plans/ — stale plan-mode artifacts.
Merge overlapping notes before adding new ones.

Files

Just SKILL.md in .agents/skills/brain of poteto/noodle.

Open the folder on GitHubat commit 82d2921

Compare with similar skills

Brain next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Brain compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Brain this skillpoteto/noodle	437	—	~860	Automated safety check: Pass	MIT	6 mo ago
Self LearnPratiyush/llm-wiki	396	—	~1.6k	Automated safety check: Pass	MIT	3 mo ago
Obsidian CLIAtmosphere/atmosphere	3.8k	13 repos	~795	Automated safety check: Pass	Apache-2.0	2 days ago
Confluence To Markdowniurykrieger/claude-bedrock	105	1 repos	~2.8k	Automated safety check: Notes	MIT	5 mo ago
Anytype Importpricklywiggles/niamos	192	—	~3.3k	Automated safety check: Pass	None	3 mo ago
Obsidian Project Memorybrycewang-stanford/Auto-Empirical-Research-Skills	4.5k	—	~2.4k	Automated safety check: Pass	Custom licence	3 days ago

Similar skills

Self Learn
Pratiyush/llm-wiki
Extract reusable patterns from recent sessions, propose framework improvements, and (with approval) update the framework docs.
396 GitHub stars~1.6k tokensUpdated 3 mo ago
Knowledge ManagementAuto-check passed
Obsidian CLI
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Interact with Obsidian vaults using the Obsidian CLI to read, create, search, and manage notes, tasks, properties, and more.
3.8k GitHub starsUsed in 13 repos~795 tokens
Knowledge ManagementAuto-check passed
Confluence To Markdown
iurykrieger/claude-bedrock
Internal fetcher module for Confluence pages. An agent skill from iurykrieger/claude-bedrock.
105 GitHub starsUsed in 1 repo~2.8k tokens
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Anytype Import
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Import a page from the user's self-hosted Anytype into this Niamos Obsidian vault, page-by-page, recursing into children only when the user explicitly says so.
192 GitHub stars~3.3k tokensUpdated 3 mo ago
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Obsidian Project Memory
brycewang-stanford/Auto-Empirical-Research-Skills
This skill should be used when the user asks to maintain an Obsidian knowledge base for a research project, import an existing research repository into Obsidian, keep project memory or daily notes…
4.5k GitHub stars~2.4k tokensUpdated 3 days ago
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AI Brain
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Questions about Brain

What does Brain do?

Read/write brain files (Obsidian vault at brain/). An agent skill from poteto/noodle. Brain is an agent skill from poteto/noodle. Read/write brain files (Obsidian vault at brain/).

When should I use Brain?

Brain fits situations like: any task that persists knowledge — reflection; after debugging sessions; architectural decisions; any insight worth preserving across sessions.

How do I install Brain in Claude Code?

Run `npx skills add poteto/noodle --skill brain -a claude-code`. Or copy the skill folder (.agents/skills/brain in poteto/noodle) into .claude/skills/brain in your project. Claude Code loads it when a task matches its description.

How do I install Brain in Codex?

Run `npx skills add poteto/noodle --skill brain -a codex`. Or copy the skill folder (.agents/skills/brain in poteto/noodle) into .agents/skills/brain in your project. Codex loads it when a task matches its description.

Can I use Brain in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add poteto/noodle --skill brain -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/brain, .gemini/skills/brain, .github/skills/brain and .opencode/skills/brain in your project.

What does Brain need to run?

SKILL.md names no scripts, command-line tools or credentials: Brain is instructions for the agent only.

Does Brain access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Brain safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Brain use?

Brain is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Brain use?

About 860 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Brain?

Skills that share tags, products or a category with Brain: Self Learn (Pratiyush/llm-wiki, 396 stars), Obsidian CLI (Atmosphere/atmosphere, 3.8k stars), Confluence To Markdown (iurykrieger/claude-bedrock, 105 stars) and Anytype Import (pricklywiggles/niamos, 192 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Brain?

poteto (a GitHub user) maintains it in poteto/noodle, which has 437 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on March 19, 2026.

Source: poteto/noodle on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Brain

Install Brain

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Brain

Before Writing

Structure

Wikilinks

Writing Style

After Writing

Durability Test

Maintenance

Files

Compare with similar skills

Similar skills

Self Learn

Obsidian CLI

Confluence To Markdown

Anytype Import

Obsidian Project Memory

AI Brain

More from poteto/noodle

Meditate

Ruminate

Ast Grep

Execute

Noodle

Plan

Questions about Brain

Install Brain

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Brain

Before Writing

Structure

Wikilinks

Writing Style

After Writing

Durability Test

Maintenance

Files

Compare with similar skills

Similar skills

More from poteto/noodle

Related

Questions about Brain