prototype SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 9 indexed copies. Same content hash, so the same checks give both the same grade.

prototype from chinkan/rustfox is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add chinkan/rustfox/prototype@git:20260922.53f91f6

Pins git:20260922.53f91f6 in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

chinkan/rustfox

Path

.agents/skills/prototype/SKILL.md

Versions recorded

2

Latest version

git:20260922.53f91f6, committed Sep 22, 2026

First version recorded

Jul 14, 2026

Size

2,931 bytes

Repository stars

11

License

MIT

Build a throwaway prototype to answer a design question. Use when the user wants to sanity-check whether a state model or logic feels right, or explore what a UI should look like.

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

# Prototype

A prototype is **throwaway code that answers a question**. The question decides the shape.

## Pick a branch

Identify which question is being answered, using the user's prompt, the surrounding code, or by asking if the user is around:

- **"Does this logic / state model feel right?"** → [LOGIC.md](LOGIC.md). Build a single shareable HTML file (free-play buttons plus tabbed guided walkthroughs) that pushes the state machine through cases that are hard to reason about on paper, and that a non-developer can drive.
- **"What should this look like?"** → [UI.md](UI.md). Generate several radically different UI variations on a single route, switchable via a URL search param and a floating bottom bar.

The two branches produce very different artifacts, so getting this wrong wastes the whole prototype. If the question is genuinely ambiguous and the user isn't reachable, default to whichever branch better matches the surrounding code (a backend module → logic; a page or component → UI) and state the assumption at the top of the prototype.

## Rules that apply to both
…

Read the whole file at its exact version.

How to install

mdr add chinkan/rustfox/prototype@sha256:714de632d116bb73

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

Versions

The registry has recorded 2 versions of this file, between Jul 14, 2026 and Sep 22, 2026, about one every 71 days.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_ztoruhblnuhvttpg
GET https://markdownregistry.com/api/v1/resolve?ref=chinkan/rustfox/prototype
GET https://markdownregistry.com/api/v1/blob/714de632d116bb73f65cdb5a882db15b9369a6713b9a47c0fad827848f0bfbe3

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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