From Replit to Production: The Founder’s Launch Checklist

A Replit prototype that works in the editor is a genuine milestone. But “works when I click Run” and “works for a thousand strangers at 2 a.m.” are two very different bars. The gap between them is where most AI-built apps stall. This is the checklist we walk through before we let any app take real traffic.

1. Move secrets out of the code

The fastest way to get burned is a hard-coded API key. Every credential — database URLs, payment keys, third-party tokens — belongs in environment variables, never in the source. Rotate any key that was ever pasted into a chat window or committed to git, because you have to assume it leaked.

2. Lock down your database

AI tools love to spin up a database with wide-open access so the demo “just works.” Before launch, confirm that row-level security or proper access rules are in place, that no table is readable by anonymous users, and that you have automated backups turned on. A single exposed table can end a company.

3. Add real authentication

Prototype auth is often a placeholder — a hard-coded user, a client-side check, or nothing at all. Production needs server-validated sessions, hashed passwords (or a managed provider), and protected routes that fail closed when a token is missing or invalid.

4. Handle the unhappy path

• What does the user see when an API call fails?
• What happens on a slow network or a double-click?
• Are errors logged somewhere you can actually read them?

Demos only ever show the happy path. Real users find every edge you didn’t.

5. Set up a real hosting environment

Running inside the Replit editor is fine for building, but production wants its own home: a proper host, a custom domain, HTTPS, and ideally a separate staging environment so you can test changes before they hit customers. We usually move founders onto a platform like Railway with staging and production split cleanly.

6. Measure before you scale

Add analytics and uptime monitoring before launch, not after something breaks. You want to know how people use the product and to get paged when it goes down — while it’s still a small problem.

The short version

Secrets out of code, database locked down, real auth, graceful failures, proper hosting, and monitoring in place. Clear those six and you’re no longer shipping a prototype — you’re shipping a product. If you’d rather have someone run this for you, that last 20% is exactly the work we do.