The code is fine. Why does it need work at all?

Because none of this is about the code. It is that the app has nowhere to run yet, and that the machine you write it on holds the credentials your customers' data sits behind.

Is Cursor less safe than the other editors?

No. Confirmed vulnerabilities exist across the category, Cursor and Windsurf and Claude Code included, and the disclosed ones are patched. Changing editor moves you to a different line of the same table. Separating credentials is what changes the outcome.

How do I check the credential problem myself?

Open the environment file your editor reads. If the connection string in it points at the database your users are on right now, that is the finding, and it is an afternoon to fix.

Do you need access to my repository?

Read-only to start, because the Production Check is a read. If you continue, we work on branches and open pull requests you review and merge.

Platform playbook

Make your Cursor-built app production-ready

Cursor writes a great deal of correct code very quickly. What it does not decide is where the app runs, which credentials it holds, or what happens when a call fails. Those three answers are what separate a repository from a service.

Book a Free Call Start with a free check

Cursor

Most common critical finding

One connection string shared by the editor and the running app, so a development session can write straight to the customer database.

Production Check: Free, 3–5 days
Typical engagement: 2–4 weeks
Hardening from: $2,000, fixed scope

What we find

Where Cursor apps break in production

What actually goes wrong, and why you would not have spotted it yourself. These are the findings we file most often, not a generic checklist.

Finding 01
It runs on your laptop and nowhere else
Cursor produces an application, not a place to run one. Hosting, TLS, environment variables, a build pipeline and a way to roll back are left to the founder, usually assembled from tutorials that contradict each other.
No deployment target
Finding 02
The app works and quietly does the wrong thing
Generated code is optimised for looking right, so an error path often returns an empty value rather than stopping. Nothing crashes, nothing is logged, and the data drifts until somebody notices months later.
Failures that return a default instead of raising
Finding 03
Your editor holds the same keys your server does
A single connection string in one env file, read by the editor and the running app alike. Whatever the developer can reach, the agent in the editor can reach, including the database your customers are using.
One credential across every environment
Finding 04
A tool you connected can reach everything else you connected
Connected servers run with the editor's permissions and are usually chained, so one bad link reaches the rest. Critical vulnerabilities have been confirmed across several MCP-integrated editors, Cursor among them.
The MCP server chain

What we do about it

The Cursor fix list

Almost none of this is about the code, which is usually fine. It is about where that code runs, what it is allowed to reach, and what happens on the paths where something fails.

How the hardening works

Split credentials per environment so the editor never holds a production role
Stand up a real deployment: build pipeline, TLS, managed secrets and a rollback
Find the silent error paths and make the ones that matter fail loudly
Review which MCP servers the editor can reach, pin them, and drop the rest
Move to managed Postgres with automated backups and a restore you have tested
Add structured logging, error tracking and uptime alerting

How it runs

A typical Cursor engagement

Durations from real projects of comparable size. The check is free and everything after it is quoted as fixed scope, so you know the price before we start.

1
Production Check
3–5 days
Read-only access to the repository. We trace the authorization paths, the money paths, and every error path that swallows a failure instead of raising it.
2
Split the credentials
Week 1
Separate database roles and separate environments, so the editor connects as something that cannot drop a table and production credentials never sit on a development machine.
3
A real deployment
Week 2–3
Build pipeline, managed secrets scoped per environment, TLS, health checks, and a rollback that is one command rather than a revert and a hope.
4
Ship and watch
Week 3–4, then 30 days
Error tracking, structured logs and uptime alerting, plus a review of which MCP servers the editor can reach and a pinned list of the ones that stay.

No lock-in

What you keep

Everything we produce belongs to you. If you stop working with us tomorrow, nothing stops running and nothing becomes unmaintainable.

Your accounts and your code
The repository, the cloud accounts, the database and the domain stay in your name.
The report, whatever you decide next
Findings, severity ratings, reproduction steps and effort estimates, written for an engineer.
Infrastructure written down
The environment is defined as code in your repository and comes with a runbook: how to deploy, how to roll back, how to restore, and what to check first.
Your agent workflow, with a floor under it
Keep generating. What changes is that the agent connects as a role with defined grants, and CI checks every branch it opens, so the speed stays and the blast radius does not.

Questions

Cursor questions we get asked

If yours is not here, ask it on the call. The first one is free and there is no obligation afterwards.

Because none of this is about the code. It is that the app has nowhere to run yet, and that the machine you write it on holds the credentials your customers' data sits behind.
No. Confirmed vulnerabilities exist across the category, Cursor and Windsurf and Claude Code included, and the disclosed ones are patched. Changing editor moves you to a different line of the same table. Separating credentials is what changes the outcome.
Open the environment file your editor reads. If the connection string in it points at the database your users are on right now, that is the finding, and it is an afternoon to fix.
Read-only to start, because the Production Check is a read. If you continue, we work on branches and open pull requests you review and merge.