brain

brain is a skill for Claude Code from jeremylongshore/bobs-big-brain-plugin. It costs 124 tokens per session (1,919 once invoked), scanned A, original, Apache-2.0.

A question-answering tool for your own technical notes, decisions, runbooks, and coding conventions. It searches that stored knowledge and adds a qmd:// citation to every supported claim.

In plain words
What is it for?
Use it to look up architecture choices, infrastructure details, operating procedures, and team conventions from your knowledge base.
Why use it?
It reduces guesswork when recalling how your systems work. The citations let you check each answer against the original source.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions Claude Code.

Part of the governed-second-brain plugin — 2 skills, 1 MCP server shipped together

Good fit Use it to look up architecture choices, infrastructure details, operating procedures, and team conventions from your knowledge base.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jeremylongshore/bobs-big-brain-plugin/brain
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 jeremylongshore/bobs-big-brain-plugin --skill brain
Clone the repo
git clone --depth 1 https://github.com/jeremylongshore/bobs-big-brain-plugin

Made for: Claude Code.

Or install governed-second-brain, the plugin that ships this one along with the rest of its 2 skills, 1 MCP server.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/jeremylongshore/bobs-big-brain-plugin/brain/github.svg)](https://agentmods.dev/skills/jeremylongshore/bobs-big-brain-plugin/brain)
Your own site
<a href="https://agentmods.dev/skills/jeremylongshore/bobs-big-brain-plugin/brain"><img src="https://agentmods.dev/badge/skills/jeremylongshore/bobs-big-brain-plugin/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.

agentmods 80×15 button for brain

Your own site · 80×15
<a href="https://agentmods.dev/skills/jeremylongshore/bobs-big-brain-plugin/brain"><img src="https://agentmods.dev/badge/skills/jeremylongshore/bobs-big-brain-plugin/brain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 124 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,919 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 $0.00124 $0.01919
Opus 5 $0.00062 $0.00959
Sonnet 5 $0.00025 $0.00384
Haiku 4.5 $0.00012 $0.00192

Measured 9d ago against content hash 28d409976271, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

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 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.

skills/brain/SKILL.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brain — cited answers from your governed knowledge base

Ask your knowledge brain a question and get an answer grounded in your governed corpus, where every claim carries a qmd:// citation. The brain does not paraphrase from memory — it retrieves governed memories and cites them, so any answer is verifiable after the fact.

Overview

This is the read surface of Bob's Big Brain: your files are compiled into governed memories, governed by deterministic code, and retrieved with citations by Tobi's qmd (OSS). The brain_search MCP tool fronts that retrieval. Your product surround is INTKB govern + ICO compile + this plugin — not a fork of qmd.

The job here is to turn a natural-language question into a cited answer — and to refuse to answer beyond what the citations support.

Prerequisites

  • The bobs-big-brain / governed-brain plugin is installed (MCP governed-brain).
  • Mode is automatic. In local mode (default) search runs in-process against your local ~/.teamkb index — no network, no API key; a compatible qmd binary must be available (prefer monorepo pin @tobilu/qmd via the Registrar / installer). Operators can use scripts/bbb-qmd from bobs-big-brain-registrar so XDG points at the team index, not personal ~/.cache/qmd. In team mode (TEAMKB_API_URL set) search proxies to the team brain. Every hit is a qmd:// citation.

Instructions

Step 1: Search the governed corpus

Retrieval is Tobi's qmd (BM25 keyword via the MCP). Prefer short keyword queries over full sentences.

  1. Derive 1–4 distinctive nouns/verbs from the user question (drop what/why/how, articles, auxiliaries, prepositions).
  2. Call brain_search with those keywords and scope: "curated" (default promoted knowledge).
brain_search({ query: "SOPS age secrets", scope: "curated" })

The tool returns { source, results: [{ citation, snippet, score, collection }] }. Each citation is a qmd://COLLECTION/FILENAME URI — the receipt for that hit.

Read the full file on GitHub · 154 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 · 154 lines · 124 tokens per session scan A 28d409976271

Subscribe to this mod's changes

brain is a skill published in the GitHub repository jeremylongshore/bobs-big-brain-plugin (2 stars, last pushed 4d ago), licensed Apache-2.0. It adds 124 tokens to every session and 1,919 once invoked, about $0.0006 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.

Related

Other skills, from other repositories

liquefy-archive

Background compression and vault archival for OpenClaw workspaces — auto-packs sessions, memory, and artifacts into verified .null vaults with full MRTV proofs. Blocks credential and key leaks before archiving.

Parad0x-Labs/openclaw-skills · 49 tokens

memory-recall

Search across all structured memory files. Default backend: BM25 scoring with Porter stemming and domain-aware query expansion. Optional: graph-based cross-reference boosting (--graph). Optional: vector/embedding backend (configure in mind-mem.json). Returns ranked results with block ID, type, score, excerpt, and file…

star-ga/mind-mem · 0 tokens

apply-proposal

Review and apply intelligence proposals generated by /scan. Uses atomic operations with rollback safety.

star-ga/mind-mem · 0 tokens

integrity-scan

Run the intelligence scanner to detect contradictions, drift, dead decisions, and missing cross-references across the entire memory workspace.

star-ga/mind-mem · 0 tokens

liquefy-openclaw

Use this skill when working with Liquefy around OpenClaw, including plugin scan/apply flows, native hook integration, session vaulting, search/restore, policy explanation, guarded runs, context gate, replay blocking, and state/history guard workflows.

Parad0x-Labs/openclaw-skills · 59 tokens

brain-sync

Sync knowledge and learnings to the shared appie-brain repo. Every Appie commits with their own identity so contributions are traceable. Use after: complex tasks (5+ tool calls), significant discoveries, new skills, or client work. Fleet: Appie-1 (Orchestrator/MacMini), Appie-2 (CMO/DO), Appie-3 (CTO/VPS).

S3YED/appie-kit · 86 tokens