guides / Building

Turn a PRD into a working prototype in one weekend

Set up a project folder, hand Claude Code your PRD, and get version one running. Four steps, then iteration with screenshots.

updated 2026-10-25

In this guide

What you need
Step 1: set up your project folder
Step 2: give Claude its instructions
Set Plan mode first
Step 3: view your prototype
Step 4: create your CLAUDE.md
What goes wrong
What comes next

What you need

This guide takes a PRD and turns it into a working app prototype over a weekend. You do not write the code. You set up the folder, give Claude Code the plan, and let it build version one.

Collect three things before you start:

A PRD for the app, saved as a markdown file.
An IDE, such as Google Antigravity, which the source names as a good free option.
Claude Code, running inside that IDE.

The goal is a prototype you can open in a browser. It will not be finished. That is the point of version one.