Guide
Is my Replit app secure?
A Replit app is secure once you have confirmed its secrets stay server-side and its database has access rules, and both are easy to get wrong when you are moving fast. The common exposures are keys committed into code and databases left open, both visible from the deployed URL.
Fast to live means fast to expose
Replit takes you from idea to a public URL in minutes. That speed is the point. It also means a mistake, like a key pasted into a file or a database with no rules, is live and public just as fast.
Fast to live means fast to expose.
What to confirm before you share it
- Secrets are in Replit's secrets manager, not pasted into code that ships to the browser.
- Your database has access rules, so a stranger cannot read it from the client.
- Source maps and directory listings are off, so your source and files are not browsable.
Check the deployed URL
Once it is live, scan it. Plaintext reads your deployed Replit URL from the outside and reports what is exposed in plain language, worst first.
Frequently asked
Are Replit apps secure by default?
Replit gives you a secrets manager and hosting, but it does not enforce that you use them or set database rules. A Replit app is secure once you have moved secrets out of code and locked down the database, not automatically.
How do I check a Replit app for leaks?
Scan the deployed URL with a passive scanner. It reads the shipped JavaScript and the endpoints and flags exposed keys, open databases, and missing headers without needing access to your Replit project.
Check your own app in about a minute. Paste your URL and Plaintext reads the shipped JavaScript, the public endpoints, and the database rules for the exact holes Replit and other AI builders leave open. The first scan is free.
Scan my app