GuardCue

Is my Cursor app safe to launch?

Paste your address. We check your live Cursor app the way a stranger would, then tell you in plain English what could cost you money, and how to fix it.

Free. No sign-up. We only look at what any visitor can already see.

Could end your business

Your app takes a visitor at their word about who they are.

what we didread the code where your app decides whose data to send back
what it showedno check that the person asking owns what they asked for
What it means for youSomeone asks for customer 124's details and is handed them, because nothing ever checked they were customer 124. Every record becomes reachable one number at a time.
This is how every finding is written. No jargon, ever.
About Cursor

Working is not the same as safe.

Cursor is an AI code editor, used both by people who write code and by founders following along with what the AI suggests. It writes real code into a real project, so how safe your app is comes down entirely to that code.

Where your data livesA Cursor project can use any database. Where it is Supabase the read-rule question applies; everywhere else your own code decides who may read what. Both are checked.

Tools like this one write ordinary code, so a finished app carries no sign of which editor built it. That changes nothing about the check: we look at what your app actually does, not at what wrote it.

What we find

The faults we find in Cursor apps.

Written the way your own report would write them. These live in the app Cursor built for you, not in Cursor’s own service, which is why only a check of your app answers it.

Could end your business

Your app takes a visitor at their word about who they are.

What it means for youSomeone asks for customer 124's details and is handed them, because nothing ever checked they were customer 124. Every record becomes reachable one number at a time.
what we didread the code where your app decides whose data to send back
what it showedno check that the person asking owns what they asked for
Could end your business

Anyone on the internet can read your customer list.

What it means for youNo login, no password, no attacker needed. Someone who finds the address copies the whole table. This is the kind of leak you may have to tell every customer about.
what we didasked your site for its customer list, without signing in
what it showedthe whole table, with names, emails and phone numbers
Could end your business

Your master key is in the code every visitor downloads.

What it means for youThat key ignores every rule you set about who may see what. Anyone who looks can read, change or delete everything you hold, including every customer record.
what we didread the code your site hands to every browser
what it showeda master key, in a file any visitor can open
The honest part

What this check cannot see.

Every scanner looks cleaner if it stays quiet about what it missed. We would rather tell you.

Could not checkReading the code itself needs you to connect the project. Without that we check everything a visitor could reach and name every question we left open, rather than implying it is fine.
Check one thing at a time

Free checks for a Cursor app.

Is a secret key sitting in my website?Check for exposed keys →Is my database readable by anyone?Check my database →Can one customer see another customer’s data?Check who can see what →

Where these facts come from