Accounts · Payments · Email · Mobile apps
Codex reads your codebase and proposes multi-file changes for you to approve before anything runs. One Shot gives it a clean base, with accounts, payments, email, and mobile app shells done, and an AGENTS.md so its suggestions land in the right place and follow the conventions already there. Codex spends its tokens on your product, not rebuilding the basics.
propose, then approve
Codex reads your codebase and suggests multi-file changes for you to approve before anything executes. Starting from the clean base and AGENTS.md in One Shot means fewer surprises and cleaner diffs.
It picks up how the project is built, so its suggestions match what is already there.
Nothing runs until you say so. You review the diff first.
Changes land in the right place instead of fighting the existing code.
the essentials
Accounts, payments, and email are built and ready. Connect your own accounts to switch them on, and get back to building your idea.
what's in the box
Google, Apple, or a one-time email code
Subscriptions and one-off payments with Stripe
Sign-in codes, welcomes, and receipts
iPhone and Android app shells, from the same app
More than one person per account, from day one
Sending and processing handled for you
Export or delete an account's data on request
Sensible limits and protections already in place
Ship it to your own host when you're ready
skip the rebuild
Sign-in, payments, and email look almost the same in every app, and building them again is tokens spent on a solved problem. One Shot hands them over done, so Codex puts it all into the part that's yours.
mobile apps
The app you build on the web is wrapped by native iPhone and Android shells, with in-app purchases already wired up. Build the part that's yours, then submit to the App Store and Google Play.
Apple and Google take a cut of in-app subscriptions (about 15% to 30%) and review every app before it goes live. You'll need their developer accounts.
how you get it
Subscribe and you get the full code, privately, plus every update while you're subscribed. Point Codex at it and start building.
Everything above, ready to build on, with new updates added while your subscription is active.
A real, browsable app built on this exact foundation.
The checkout and account area you're using right now are built on it.
pricing
Billed yearly · cancel anytime
Get startedfrom the creator
I ship an app most weeks. It bootstraps my aerospace work and earns the passive income I live on. One Shot is the tooling I put together to make that prototyping as fast as possible for me. I hope it's as helpful for you 🙏
Hand Codex a foundation that already works, and go from idea to a prototype in one shot.