Reeve Is your Replit app safe?
Replit lets you build, run and deploy an app all in one place — and with Replit's AI, often without writing much code yourself. That convenience is great, but it also makes it easy to ship a key or a setting that should have stayed private.
Reeve checks the most common problems from the outside, for free, and explains anything it finds in plain English. No install, no access to your accounts — only what's already public.
Paste your app's link. About 20 seconds. See your grade with no signup.
What can actually go wrong with a Replit app
None of these mean you did anything wrong — they're the normal side-effects of building quickly. Here's what's worth checking:
A secret key in your code instead of Replit Secrets
Replit gives you a Secrets manager so keys stay out of your code. But it's tempting to paste a key straight into a file to get things working — and if that file runs in the browser, or your Repl is public, anyone can read it. Reeve finds the keys in your app's loaded code and tells you which are safe to expose and which need to move.
A public Repl exposing your source (and keys)
On many plans, Repls are public by default — meaning your code, and anything hardcoded in it, can be read by anyone with the link. Reeve checks what your deployed app exposes from the outside, so you know if private details are visible.
Your database left open (RLS off)
If your app stores data — in Replit's database, Supabase, or another Postgres — there's usually a rule for who can read or change each row. If it's off or misconfigured, your tables can be open to anyone who finds the address. It's the most common serious issue, and it hides until you check.
An exposed .env or config file
Keys often live in a .env file that shouldn't ship. Sometimes it ends up reachable on the deployed site anyway, which is a shortcut to everything sensitive. Reeve checks whether yours is quietly accessible.
Source maps left on
A "source map" reveals your app's original code to anyone who looks. Handy while building, but in production it gives strangers a readable copy of how your app works and makes other gaps easier to find. Reeve checks whether yours are exposed.
Missing safety headers & open endpoints
Small settings that tell browsers how to protect your visitors, plus whether your data endpoints answer to anyone or any website. Minor alone; together they widen the gap. Reeve flags what's missing.
What Reeve is — and isn't
Reeve is a free, read-only check from the outside — like an inspector trying the doors without going in. It's fast and catches the common, high-impact mistakes. It is not a full security audit, and a clean grade isn't a guarantee — it means the obvious doors are shut.
Replit gives you good tools — a Secrets manager, and controls over whether a Repl is public — and they genuinely help when you use them. What Reeve adds: a check of what your deployed app actually exposes from the outside, in case a key slipped into code or a Repl is more public than you thought — explained in plain words you can act on. And if you'd rather not think about it, we can watch it for you.
Want it handled, not just checked?
Reeve Care keeps watching your app, backs up your data, and helps you fix things when they break — so you can keep building instead of worrying.
Learn about Reeve CareQuestions, answered honestly
Are Replit apps secure by default?
Replit gives you the pieces to be secure — Secrets, deployment controls — but "by default" depends on whether keys stayed in Secrets, whether your Repl is private, and whether your database rules are on. The only way to know is to check what's exposed, which Reeve does free in about 20 seconds.
Is it safe to keep API keys in my Replit code?
It's much safer to keep them in Replit Secrets than in your code. A key written into a file can be read if that code runs in the browser or your Repl is public. Reeve finds keys in your loaded app and tells you which are safe to expose and which need to move into Secrets.
Can people see my code if my Repl is public?
Yes — a public Repl means your source, and anything hardcoded in it, can be read by anyone with the link. Reeve checks what your deployed app reveals from the outside so you can tell whether private details are showing.
Will scanning my Replit app break anything?
No. Reeve only looks at what's already public from the outside. It never logs in, never changes anything, and never downloads your files — read-only, like checking whether a door is locked without stepping inside.
Built somewhere else? We've got the same honest rundown for:
Automated external check, not a full audit. Absence of findings is not a guarantee of safety.