MUGGSOFCODE
// BUILD_TOOL //
A spec-driven code generation sandbox.
A spec-driven code generation sandbox.
MuggsOfCode is a spec-driven code-generation sandbox built for a high-school CS course — but the thing it actually teaches is older and bigger than the course.
The skill is precision of intent. There are three ways people write code with AI: vibe coding (“just make me a thing”), AI-assisted coding (“finish the line I’m typing”), and spec-driven development (“here is exactly what I want — build to it”). The third is the oldest by decades and the most transferable, because what it trains isn’t “use this particular AI.” It’s express what you want clearly enough that anyone — a person, a model, or future-you — can produce the right thing from it. That skill outlives any single model, company, or year.
Vibe coding isn’t the enemy of that — it’s the on-ramp. The tool opens by asking you to choose: start in vibecode (describe it, watch it appear) or in SDD (write the blueprint first). Vibecode is where the instinct lives; SDD is the discipline it grows into. The prompt-craft you build talking loosely to a model is the raw material of a real specification. Neither path is framed as the lesser one.
The AI is a critic, never a co-author. It asks Socratic questions about your spec, flags vague language, and checks whether your own comments match the code — but it will not pick a design choice, write a comment, or fix your code. An AI that did the work for you would quietly delete the lesson. The guidance is advisory, never coercive, and the interface stays honest about what it does and doesn’t keep.
Smallness is a feature. The model runs on a single GPU in my living room, not a frontier API. A small local model has less slack, so a vague spec produces visibly weaker output — and that gap, between what you meant and what you got, is the whole lesson. It’s also nearly free to run, which is the other half of the idea: do the cheap, verbose scaffolding here, then carry a compact package to a bigger model’s free tier for the hard part. A kid with no budget can start something genuinely ambitious by spending borrowed tokens only where they actually matter.
Nothing is saved between sessions. Close the window and the chat is gone. What you carry out — the spec, the artifact — is the only thing that lasts. That isn’t a limitation; it’s the thesis, made literal.
Chats are disposable. Specs are durable.