1ShotGen — Build it once. Build it right.

Describe a thing.<br>Get a prompt that builds it.

1ShotGen turns a one-liner, or a wall of text, into a single, surgical prompt you paste<br>into your coding agent of choice (Claude Code, Codex, Cursor, etc.) to build your idea out<br>in one shot. It picks the stack, lays out the files, handles the edge cases, and ends with<br>a definition of done. No back-and-forth, no half-built scaffolds.

Start free →<br>Open the app →<br>See how it works

5 free generations a week · no credit card

one-shot prompt

Three steps to a buildable prompt

Describe it

A sentence or a spec — whatever you've got. Pick a target (web app, CLI, iOS…) or let the model choose.

We engineer the prompt

1ShotGen expands it into a precise brief: stack, file layout, data model, edge cases, and a definition of done.

Paste & build

Hand it to your coding agent. Copy, download as .md, and watch it build the whole thing at once.

Simple pricing

Start free. Upgrade when one-shotting becomes a habit.

Free

$0/forever

5 generations / week

Every build target

Copy & download as Markdown

Saved prompt history

Get started<br>Open app

Most popular

Pro

$12/month

Unlimited generations

Every build target

Copy & download as Markdown

Full prompt history across devices

Priority on new build targets

Start free, upgrade anytime<br>Upgrade to Pro