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spellbook

Demo skill for "The Dark Arts of Skill Engineering." A tiny, readable scaffold that shows five dark arts in miniature: routing (this file), a script that talks back (scripts/context.mjs), a hook that fights back (scripts/hook.mjs), making sub-agents argue (reference/argue.md), and forcing divergence (reference/diverge.md). Use when the user types /spellbook <command>, or asks to argue, diverge, or set up the demo.

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Repository
pbakaus/impeccable-talks
Last source activity
June 29, 2026 at 23:25
Detected SKILL.md language
English
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50
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11

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SKILL.md
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name
spellbook
description
Demo skill for "The Dark Arts of Skill Engineering." A tiny, readable scaffold that shows five dark arts in miniature: routing (this file), a script that talks back (scripts/context.mjs), a hook that fights back (scripts/hook.mjs), making sub-agents argue (reference/argue.md), and forcing divergence (reference/diverge.md). Use when the user types /spellbook <command>, or asks to argue, diverge, or set up the demo.
user-invocable
true
allowed-tools
["Bash(node *)"]
license
Apache-2.0
# Spellbook (starter) The workshop build: a **pocket Impeccable** you assemble as the talk climbs. It critiques and re-imagines `sample/landing.html` (a deliberately-median page) using five dark arts in miniature. It runs as-is; every art has a `YOUR TURN` marker where you extend it. Read it top to bottom, then make it yours. ## Setup (always do this first) DARK ART · *the script talks back.* Do not guess the project state. Run: ```bash node scripts/context.mjs ``` **Follow whatever it prints.** The script reads the environment (git branch, whether a NOTES.md exists) and returns a fresh, in-thread directive. That directive outranks anything written statically below, because it is shaped to the exact situation. If it prints `NO_NOTES`, create `NOTES.md` first. If it prints `READY`, continue. ## Commands (the router) DARK ART · *route like a frontier model.* This file is a thin router. Do not inline the technique here; load the one expert reference the command needs, and nothing else, so context stays cheap. | Command | Load this, then follow it | |-----------------------------|---------------------------| | `/spellbook argue [page]` | `reference/argue.md` | | `/spellbook diverge [page]` | `reference/diverge.md` | `[page]` defaults to `sample/landing.html`. If no command is given, ask which one the user wants. Never run both references at once. ## The hook (already working, even when this skill is not invoked) DARK ART · *hooks that fight back.* `scripts/hook.mjs` runs after every file edit (wire it up via `.claude/settings.json`, see `README.md`). It scans the touched file for a banned pattern and injects a system-reminder. You do not invoke it; it watches. Try editing a file to include `TODO: fix later` and watch it push back.
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