prototype

Build throwaway logic or UI prototypes to validate design questions.

5|Updated May 21, 2026
One-click install
npx skills add https://github.com/TrebuchetDynamics/pi-package-goal --skill prototype-trebuchetdynamics
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: prototype
Source: https://github.com/TrebuchetDynamics/pi-package-goal/tree/main/skills/prototype
Command: npx skills add https://github.com/TrebuchetDynamics/pi-package-goal --skill prototype-trebuchetdynamics

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

It helps you quickly validate uncertain business logic, state transitions, or UI structure so you don’t waste time building the wrong thing.

Core Features & Use Cases

  • Throwaway-first design validation: turn a design question into a runnable prototype without persistence, tests, or heavy polish.
  • Two targeted modes: use logic prototypes to pressure-test state/data models, and UI prototypes to compare radically different UI structures on the same route.
  • Visible outcomes and handoff: surface the full relevant state after each action and capture the final answer in durable notes (e.g., NOTES.md, ADR, or an issue) when you’re done.

Quick Start

Ask the prototype skill to build a small throwaway prototype that tests a specific state-machine edge case and reports the state after each step.

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 writing production code?

You can validate a state machine design by building a throwaway logic prototype that tests specific edge cases and surfaces the full relevant state after each action without requiring persistence or tests.

What is the best way to explore UI variations for a single route without committing to a final structure?

Exploring UI variations involves generating multiple radically different UI structures for the same route in a throwaway prototype, allowing you to compare designs visually before production work begins.

How do I pressure-test an API shape during early architecture validation?

To pressure-test an API shape, build an in-memory logic prototype that runs with one command, validates the data model, and reports the state after each step to answer uncertain design questions.

Can I run design validation prototypes without setting up a database or writing tests?

Yes, design validation prototypes are throwaway and in-memory by default, satisfying one-command runnability without requiring database persistence, heavy polish, or test coverage to validate uncertain business logic.

What should I do with the results after testing a prototype's state transitions?

After testing state transitions, you should follow a clean capture-or-delete process by recording the final answer in durable notes like NOTES.md, an ADR, or an issue, then discarding the throwaway prototype.

When should I avoid using throwaway prototypes for design validation?

You should avoid using throwaway prototypes when your design questions are already certain or when you need permanent, polished production code, as prototypes intentionally skip persistence, tests, and heavy architecture.