brain-ops

brain-ops is a skill for Claude Code, Codex from cyberbird2048/gbrainmcp-clean. It costs 42 tokens per session (1,467 once invoked), scanned A, original, MIT.

A set of rules and procedures for maintaining a personal knowledge base called a Brain. It requires checking existing notes first, enriching information, writing it back with source labels, and linking related pages.

In plain words
What is it for?
Use it to search notes before external research, read and update relevant pages, add source citations, preserve user statements as authoritative, and create links between mentioned people or companies and related pages.
Why use it?
It prevents duplicated research, unsupported facts, and disconnected notes by making the knowledge base part of each information workflow.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for gbrain. Also seen: mentions subagents; built for gbrain.

Good fit Use it to search notes before external research, read and update relevant pages, add source citations, preserve user statements as authoritative, and create links between mentioned people or companies and related pages.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cyberbird2048/gbrainmcp-clean/brain-ops
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add cyberbird2048/gbrainmcp-clean --skill brain-ops
Clone the repo
git clone --depth 1 https://github.com/cyberbird2048/gbrainmcp-clean

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for brain-ops

README.md
[![agentmods](https://agentmods.dev/badge/skills/cyberbird2048/gbrainmcp-clean/brain-ops/github.svg)](https://agentmods.dev/skills/cyberbird2048/gbrainmcp-clean/brain-ops)
Your own site
<a href="https://agentmods.dev/skills/cyberbird2048/gbrainmcp-clean/brain-ops"><img src="https://agentmods.dev/badge/skills/cyberbird2048/gbrainmcp-clean/brain-ops/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.

agentmods 80×15 button for brain-ops

Your own site · 80×15
<a href="https://agentmods.dev/skills/cyberbird2048/gbrainmcp-clean/brain-ops"><img src="https://agentmods.dev/badge/skills/cyberbird2048/gbrainmcp-clean/brain-ops.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,467 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00042 $0.01467
Opus 5 $0.00021 $0.00733
Sonnet 5 $0.00008 $0.00293
Haiku 4.5 $0.00004 $0.00147

Measured 9d ago against content hash 40553ad3bf0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

brain-ops 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 9d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • brain-ops — 100% identical, 0 lines differ
skills/brain-ops/SKILL.md · 164 lines

How it starts

The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brain Operations — The Ambient Context Layer

The brain is not an archive. It is a live context membrane that every interaction flows through in both directions.

Convention: See skills/conventions/brain-first.md for the 5-step lookup protocol. Convention: See skills/conventions/quality.md for citation and back-link rules.

Contract

This skill guarantees:

  • Brain is checked BEFORE any external API call (brain-first lookup)
  • Every inbound signal triggers the READ → ENRICH → WRITE loop
  • Every outbound response checks brain for relevant context
  • Source attribution on every fact written (inline [Source: ...] citations)
  • User's direct statements are highest-authority data
  • Back-links maintained on every brain write (Iron Law)

Iron Law: Back-Linking (MANDATORY)

Every mention of a person or company with a brain page MUST create a back-link FROM that entity's page TO the page mentioning them. An unlinked mention is a broken brain. See skills/conventions/quality.md for format.

Phases

Phase 1: Brain-First Lookup (MANDATORY)

Before using ANY external API to research a person, company, or topic:

  1. gbrain search "name" — keyword search for existing pages
  2. gbrain query "natural question about name" — hybrid search for context
  3. gbrain get <slug> — if you know the slug, read the full page
  4. Check backlinks: who references this entity?
  5. Check timeline: recent events involving this entity

The brain almost always has something. External APIs fill gaps, not start from scratch.

Phase 2: On Every Inbound Signal (READ → ENRICH → WRITE)

Every message, meeting, email, or conversation that references a person or company:

  1. Detect entities — people, companies, deals mentioned
  2. Load brain pages — read existing pages for context before responding
  3. Identify new information — what does this signal tell us that the page doesn't know?
  4. Write it back — update the brain page with new info + timeline entry + source citation
  5. Create if missing — if notable and no page exists, create via enrich skill

Read the full file on GitHub · 164 lines

Changes

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.

  1. 9d ago First seen · 164 lines · 42 tokens per session scan A 40553ad3bf0f

Subscribe to this mod's changes

brain-ops is a skill published in the GitHub repository cyberbird2048/gbrainmcp-clean (0 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 1,467 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

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