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prototype

Build throwaway terminal or UI prototypes to validate state machines and designs.

Updated May 5, 2026
Search Tags:#prototyping#ui design#state machine#logic validation#throwaway code#edge case testing#design testing
One-click install
npx skills add https://github.com/ethan-rio/skills --skill prototype-ethan-rio
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: prototype
Source: https://github.com/ethan-rio/skills/tree/main/skills/engineering/prototype
Command: npx skills add https://github.com/ethan-rio/skills --skill prototype-ethan-rio

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill eliminates the risk of wasting time building full features or logic models that don't work as expected, letting you test ideas cheaply with throwaway code before committing development resources.

Core Features & Use Cases

  • Logic Prototyping: Build interactive terminal apps to test state machines, business logic, and data models by driving them with real inputs to catch edge cases that are hard to reason about on paper.
  • UI Prototyping: Generate multiple radically different UI variations on a single route to compare layouts, information hierarchy, and user flows before selecting a final design.
  • Use Case: If you're unsure if your e-commerce order state machine handles the edge case where a payment fails after shipping, use the logic prototype to drive through that scenario. If you can't decide between a sidebar or top-nav layout for your settings page, use the UI prototype to toggle between variants directly in the browser.

Quick Start

Ask the AI to build a throwaway prototype of your proposed order state machine so you can test edge cases by interacting with it in the terminal.

Frequently Asked Questions about prototype

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test a state machine for edge cases before writing production code?▼

You can build a throwaway logic prototype to drive state machines with real inputs in a terminal app, catching edge cases before committing development resources.

What is the best way to compare different UI layout options for a web route?▼

UI prototyping generates multiple radically different variations on a single route with a floating switcher, letting you toggle between layouts directly in the browser to compare designs.

How do I validate business logic and data models without building a full feature?▼

You can generate disposable, terminal-based state drivers to sanity-check data models and validate business logic interactively without writing production-grade code.

Can I use throwaway prototypes to test e-commerce order state transitions like failed payments?▼

Yes, logic prototyping allows you to interactively drive through complex scenarios like a payment failing after shipping to test how your order state transitions handle such edge cases.

Does prototyping UI variations require setting up database persistence?▼

No, all code generated for UI and logic prototyping is marked as disposable and operates with no persistence by default, ensuring rapid testing without database setup.

When should I avoid using throwaway code for design and logic testing?▼

You should avoid using throwaway prototypes for final implementation, as they are strictly designed for testing ideas, validating logic, and comparing layouts before committing to full development.

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