prototype

Build throwaway logic or UI variants to validate design assumptions.

1|Updated May 22, 2026
One-click install
npx skills add https://github.com/spontus-reach/spontus --skill prototype-spontus-reach
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: prototype
Source: https://github.com/spontus-reach/spontus/tree/main/.agents/skills/prototype
Command: npx skills add https://github.com/spontus-reach/spontus --skill prototype-spontus-reach

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

It helps you validate whether a proposed design, state model, or UI direction actually works in practice before you invest in building it for real.

Core Features & Use Cases

  • Throwaway logic prototyping: drives a state machine through realistic edge cases using a minimal, interactive terminal flow.
  • Radically different UI variations: explores multiple UI layouts on the same route via a variant switch, so you can compare information hierarchy and affordances.
  • Fast, in-memory experimentation: avoids persistence and over-polish so the prototype stays focused on answering the question.

Quick Start

Ask the AI to prototype the idea as either a logic prototype or a UI prototype, then run the generated prototype in a single command and observe the state changes across interactions.

Frequently Asked Questions about prototype

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

FAQPage Schema
How do I validate a state machine design before committing to full implementation?▼

Validating a state machine design before implementation involves building a throwaway terminal logic prototype to drive the model through realistic edge cases. This approach tests your business logic in-memory and surfaces state changes after each interaction to quickly confirm design assumptions.

What is the best way to compare multiple UI layout variations for the same route?▼

Comparing multiple UI layout variations is best done by generating a prototype with a variant switch. This lets you explore radically different structural options and information hierarchies on the same route, avoiding over-polish so you can evaluate affordances and validate UI direction quickly.

Can I run a business logic prototype without setting up a database or persistence layer?▼

Yes, you can run a business logic prototype without a database by using an in-memory operation mode. This approach intentionally avoids persistence to keep the prototype focused on immediate design validation, allowing you to execute a one-command runnable setup and observe data-model sanity checks.

How do I quickly test data-model assumptions without building a full application?▼

Quickly testing data-model assumptions without building a full application requires creating a fast, in-memory prototype. This method allows you to perform sanity checks and validate business logic shaping through a minimal, interactive terminal flow that surfaces state after each interaction.

When should I avoid using a prototype for design validation?▼

You should avoid using a prototype for design validation when your project requires long-term persistence or production-ready polish. Because this method operates in-memory and generates throwaway logic, it is not suited for final deployment but rather for quickly answering specific structural or business logic questions.