reference-pack

reference-pack is a skill for Claude Code, Codex from cynthiajones34/GBrain. It costs 31 tokens per session (1,013 once invoked), scanned A, a copy of reference-pack, MIT.

A reference skillpack that documents the files and quality checks expected in a third-party gbrain skillpack. A skillpack is a package of agent instructions and related tests or operating guides.

In plain words
What is it for?
Use it when creating or reviewing a skillpack, including its manifest, skill instructions, bootstrap runbook, tests, evaluation files, and changelog.
Why use it?
It gives authors a concrete structure for packaging skills and explains what gbrain's doctor checks before publication.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/cynthiajones34/gbrain/reference-pack
Any agent
npx skills add cynthiajones34/GBrain --skill reference-pack
Clone the repo
git clone --depth 1 https://github.com/cynthiajones34/GBrain

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 reference-pack

README.md
[![agentmods](https://agentmods.dev/badge/skills/cynthiajones34/gbrain/reference-pack.svg)](https://agentmods.dev/skills/cynthiajones34/gbrain/reference-pack)
Your own site
<a href="https://agentmods.dev/skills/cynthiajones34/gbrain/reference-pack"><img src="https://agentmods.dev/badge/skills/cynthiajones34/gbrain/reference-pack.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,013 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00031 $0.01013
Opus 5 $0.00015 $0.00507
Sonnet 5 $0.00006 $0.00203
Haiku 4.5 $0.00003 $0.00101

Measured 3d ago against content hash e15a5cde2b58, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reference-pack 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 3d 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

This is a copy

100% identical to reference-pack — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

examples/skillpack-reference/skills/reference-pack/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

reference-pack

This is the canonical reference for a third-party gbrain skillpack. Read its tree once and you know how to author one.

What this skill does

When the user asks how third-party gbrain skillpacks work, this skill points them at the four artifacts every pack ships:

  • skillpack.json — declares pack metadata + which artifacts the doctor scores (skills, unit_tests, e2e_tests, llm_evals, routing_evals, runbooks, changelog).
  • skills/<name>/SKILL.md — frontmatter (name, description, mutating, triggers) plus markdown body. Agents route on triggers:; the body is the in-context instruction set.
  • runbooks/bootstrap.md — agent-readable post-scaffold steps. gbrain DISPLAYS this after scaffold lands; the agent walks per-step at its own discretion. No auto-executor (codex T1 supply-chain hardening).
  • CHANGELOG.md — Keep-a-Changelog shape. The doctor's changelog_ present_and_current dimension fails if there's no ## [<version>] entry matching the manifest's version.

What the doctor scores

Ten binary dimensions, split into:

Core (5; must all pass to publish at any tier):

  1. manifest_valid — schema-validates skillpack.json
  2. skills_have_skill_md — every listed skill has SKILL.md with name / description / triggers
  3. routing_evals_present — each skill has routing-eval.jsonl with

    = 5 intents

  4. skills_have_unique_triggers — MECE at the pack level
  5. changelog_present_and_current — CHANGELOG entry for current version

Quality badges (5; earn for tier eligibility):

  1. unit_tests_present — manifest.unit_tests matches >= 1 file
  2. e2e_tests_present — manifest.e2e_tests matches >= 1 file
  3. llm_eval_present*.judge.json with >= 3 cases
  4. bootstrap_runbook_present — non-empty runbooks/bootstrap.md
  5. license_present — LICENSE / LICENSE.md / LICENSE.txt non-empty

Tier eligibility:

  • endorsed — all 10 (gates: Garry's endorsements.json overlay in the registry)
  • community — all 5 core + >= 3 of 5 badges (default tier on PR merge)
  • experimental — all 5 core + < 3 badges
  • blocked — any core fails

Read the full file on GitHub · 104 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago First seen · 104 lines · 31 tokens per session scan A e15a5cde2b58

Subscribe to this mod's changes

reference-pack is a skill published in the GitHub repository cynthiajones34/GBrain (0 stars, last pushed 27d ago), licensed MIT. It adds 31 tokens to every session and 1,013 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to reference-pack, differing in 0 lines, and is treated as a copy.