Replit Agent to production: what has to change first

What Replit already did for you

More than the browser-only tools. You have a project that runs on a server, a place to put secrets, and a URL that works. For a prototype that is genuinely enough, which is why the question of moving comes up later here than elsewhere.

Secrets are somewhere specific

Replit has its own place to store secrets, and your app reads from it. That is the right pattern and it does not travel with your code.

Before moving, list every secret the project uses and where it is read. Then set each one on the new host. An app missing a single secret usually fails in a way that gives no hint which one is missing.

Find out what your database actually is

This is the step that catches people. Depending on how the project was built, your data may live in something tied to the Replit environment rather than in a database you could point another host at.

Answer this before anything else: where is the data, can something outside Replit connect to it, and if not, what does moving it involve? A migration is a manageable job when planned and an unpleasant surprise when discovered mid-deploy.

The always-on assumption

Code written for a server that stays running behaves differently on hosting that starts and stops per request. Anything held in memory between requests — a cache, a counter, a session — quietly stops working, and the failure looks intermittent rather than total.

This is the most common category of bug when moving from an always-on environment to a serverless one, and it is worth deciding deliberately which kind of host you are moving to.

The security work is the same

Nothing about running on Replit changes the checks. Access rules on your data, permissions enforced on the server, no secrets in the front-end, protected routes. A running server is not a secured one, and having deployment handled early can make it easy to assume the rest was too.

Run the same checks you would on anything else before real users arrive.