Borrowing it
Nothing to install: this file belongs to poteto/noodle. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/poteto/noodle/main/.agents/skills/brain/SKILL.mdgit clone --depth 1 https://github.com/poteto/noodleWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/poteto/noodle/brain)<a href="https://agentmods.dev/skills/poteto/noodle/brain"><img src="https://agentmods.dev/badge/skills/poteto/noodle/brain/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/poteto/noodle/brain"><img src="https://agentmods.dev/badge/skills/poteto/noodle/brain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00073 | $0.00808 |
| Opus 5.5 | $0.00029 | $0.00323 |
| Sonnet 5.5 | $0.00015 | $0.00162 |
| Haiku 4.5 | $0.00007 | $0.00081 |
Grade A, and why
brain scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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.mdfor principle updatesbrain/plans/index.mdfor 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.mdis 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/withoverview.mdandphase-N-*.mdinside.
Wikilinks
Format: [[section/file-name]]. Resolution order: same directory, then relative path, then vault root. Heading anchors ([[file#heading]]) are stripped during resolution.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 77 lines · 73 tokens per session scan A 0f214f7ba655
brain is a skill published in the GitHub repository poteto/noodle (529 stars, last pushed 7mo ago), licensed MIT. It adds 73 tokens to every session and 808 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
Cortex
Operate Cortex, the LifeOS memory system — the typed Knowledge Archive (People, Companies, Ideas, Research with typed related: links) plus recall of prior work sessions, ISAs, and conversations. Search, add, harvest, develop, ingest, distill, graph-navigate, recall. USE WHEN cortex, knowledge, knowledge base, search…
wiki-dashboard
Create dynamic, queryable Obsidian dashboard views using Bases or Dataview. Use for auto-updating tables, indexes, or structured views of vault content; not for ordinary question answering.
Migrate
Intakes external content, classifies chunks against LifeOS taxonomy, commits with provenance. Sources: .md/.txt, stdin, LifeOS dirs, CLAUDE.md/Cursor/OpenAI Custom Instructions, Obsidian/Notion/Apple Notes exports. MigrateScan classifies → routing table. MigrateApprove with…
relevance-coarse-filter
Cheap, high-recall first-pass filter that removes obvious junk from a detector candidate pool before expensive story-origin research and PR judgment. Decides keep, monitoronly, or reject — never ranks, writes angles, verifies dates, or decides whether to pitch.
daily-briefing
Proactive daily briefing that fires on a recurring schedule, pulls recent memory and workspace context, composes a structured summary (action items, progress, radar, next steps), and delivers it to all active channels. Enable with a time like "set up my daily briefing at 9am". Disable, reschedule, or check status at…
session-compact
AI DevKit · Compact a historical AI coding session with Jev when context is long, work is handed off or resumed, or durable continuation facts and memory candidates need extraction.