master

A guided learning system that turns reference documents into practiced knowledge through learning, quizzes, real-case exercises, and simulations. It is meant for learning material deeply rather than only reading it.

In plain words
What is it for?
Use it to learn a document, test your recall, connect ideas to work situations, practise cases, and simulate applying the material under pressure.
Why use it?
It helps reveal whether you can recall and apply a concept, instead of only recognizing it in documentation.

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/szoloth/skill-pack/master
Any agent
npx skills add SZoloth/skill-pack --skill master
Clone the repo
git clone --depth 1 https://github.com/SZoloth/skill-pack

Made for: Claude Code, Codex.

Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,251 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00050 $0.04251
Opus 5 $0.00025 $0.02125
Sonnet 5 $0.00010 $0.00850
Haiku 4.5 $0.00005 $0.00425

Measured 3d ago against content hash ff2eaf79b0b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

master 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.

skills/master/SKILL.md · 369 lines

How it starts

The opening of the file, as written. The whole thing — 369 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/master — Learning Mastery System

Turns passive reference documents into active expertise. Based on Justin Skycak's learning science (retrieval practice, spaced repetition, cognitive weightlifting) and Cedric Chin's expertise acceleration (case libraries, pattern recognition, cognitive flexibility theory).

Core principle: Reading a framework is not knowing it. You know it when you can recall it cold, bind it to real cases from your career, and deploy it under simulated pressure.

The learning sequence: Learn -> Quiz -> Cases -> Sim. Each mode builds on the previous. Don't skip to quiz without learning first. Don't skip to sim without cases.

Modes

Parse the user's command to determine mode. Default to learn for new concepts, quiz for concepts already learned.

/master learn [doc-path-or-keyword]   — Guided acquisition (start here)
/master quiz [doc-path-or-keyword]    — Retrieval practice
/master cases [doc-path-or-keyword]   — Case binding
/master sim [doc-path-or-keyword]     — Scenario simulation
/master status [doc-path-or-keyword]  — Show mastery state

If doc-path-or-keyword is a keyword, search for matching reference docs in the current project or common knowledge base locations. If it's a path, use directly. Works with any reference document — the skill is not tied to a specific topic.

Before Starting Any Mode

  1. Read the reference document
  2. Read the mastery state file if it exists (same directory as doc, named [doc-stem].mastery.json)
  3. Read the cases file if it exists ([doc-stem].cases.md)
  4. Extract all discrete concepts/frameworks from the doc (each named framework, model, or principle = one concept)

Mode 0: Learn (Guided Acquisition)

Grounded in: Skycak's retrieval practice + WM bottleneck; Chin's "read source practitioners, not summaries" + case pairing

Claude's role: Coach, not textbook. The user reads the source material themselves. Claude assigns what to read, then tests retrieval when they come back.

Read the full file on GitHub · 369 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. 3d ago First seen · 369 lines · 50 tokens per session scan A ff2eaf79b0b9

Subscribe to this mod's changes

master is a skill published in the GitHub repository SZoloth/skill-pack (14 stars, last pushed 5mo ago), licensed MIT. It adds 50 tokens to every session and 4,251 once invoked, about $0.0003 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 2026-08-30.