brain-taxonomist SKILL.md skillA

brain-taxonomist from garrytan/gbrain is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add garrytan/gbrain/brain-taxonomist@v1.0.0

Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
garrytan/gbrain
Path
plugin/skills/brain-taxonomist/SKILL.md
Versions recorded
5
Latest version
v1.0.0, committed Oct 7, 2026
First version recorded
Aug 16, 2026
Size
9,514 bytes
Repository stars
31,587
License
MIT

Filing gate for ALL brain writes. Consulted before creating any new brain page to determine the correct path. Reads the ACTIVE schema pack via `gbrain schema show --json` — no hardcoded directory table. Also runs periodic taxonomy drift detection via `gbrain schema review-orphans`.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# brain-taxonomist

## Purpose

**Gate function:** Before creating ANY new brain page, consult this skill to determine the correct filing path. This prevents misfiling at write time rather than cleaning up drift after the fact.

**Drift function:** Periodic scan for pages that have outgrown their current location.

## Contract

This skill guarantees:
- Every new page is filed at the path determined by the ACTIVE schema pack — never against a hardcoded directory table baked into this skill.
- The decision is reproducible: invoking brain-taxonomist twice on the same content produces the same recommended path.
- Ambiguous cases surface to the user via `skills/ask-user/` rather than silently picking a default.
- Per-source overrides via `--source <id>` are honored — multi-brain users (Persona B) get a different recommendation per source if their packs diverge.
- When no matching `page_types[]` entry exists in the active pack, the skill signals to EIIRP Phase 3 (SCHEMA CHECK) rather than picking the closest-fitting fallback.

## Critical: this skill reads the ACTIVE schema pack as data

`brain-taxonomist` has NO hardcoded directory table. Every decision is
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add garrytan/gbrain/brain-taxonomist@sha256:65580ca650713926

The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_nkmvyihxcpxyeicb.svg)](https://markdownregistry.com/a/art_nkmvyihxcpxyeicb)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Aug 16, 2026 and Oct 7, 2026, about one every 13 days.

versioncommittedcommitsizeaudit
v1.0.0 latest2026-10-07 590bb9a 9,514 BA view · diff
v1.0.02026-10-05 6509f9b 9,513 BA view · diff
v1.0.02026-10-04 739e5cc 9,346 BA view · diff
v1.0.02026-10-02 c1e3b80 8,740 BA view · diff
v1.0.02026-08-16 df4feda 8,285 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9514 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

garrytan/gbrain · 31,587 stars · license MIT · pushed 2026-11-06 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_nkmvyihxcpxyeicb
GET https://markdownregistry.com/api/v1/resolve?ref=garrytan/gbrain/brain-taxonomist
GET https://markdownregistry.com/api/v1/blob/65580ca65071392646cdc462c127ea6d43a7eb02bdd9a7fcbd15c7e85e981b3b

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in garrytan/gbrain

Other files named brain-taxonomist

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