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.