I built a tool that turns vague ideas into buildable prompts for AI coding agents

A developer built 1ShotGen, a tool that transforms vague ideas into precise, buildable prompts for AI coding agents like Claude Code and Cursor. The tool automatically selects a tech stack, generates a file list, and includes a definition of done, outputting a single surgical prompt ready to paste. It accepts anything from a brief phrase like "a pomodoro timer with pixel tomatoes" to a full-page specification.

Like many of you, I spend way too long writing prompts for Claude Code / Cursor. "You are an expert...use that stack...handle edge cases...here's the structure..." So I automated that part. 1ShotGen takes whatever you type - "a pomodoro timer with pixel tomatoes" or a full-page spec — and returns a single, surgical prompt ready to paste into your coding agent of choice. It picks the tech stack, generates the file list, and includes a definition of done. Try it out? 1ShotGen.com https://1shotgen.com/