VulCode connects business systems with API integrations matched to your data, not a generic endpoint: payments, CRM, inventory and KSeF. Every integration comes with documentation from day one and secure authentication, ready to connect to further systems.
from PLN 999
The figure for your scope comes in a free quote.
For anyone with two systems that should talk to each other, and today do not.
Connecting a payment gateway to your sales or invoicing system.
Orders and customers synced automatically, with no manual re-entry.
An API exposing your system's data to analytics and reporting tools.
Stock levels and shipment statuses synced between a supplier and your panel.
Exposing your own data to external integrators, with documentation and access limits.
Invoices from your system go to KSeF by themselves, and the KSeF number is saved with the document.
From brief to a working integration usually takes a few days to a few weeks.
You tell us what has to talk to what and what should happen automatically. We send back a price and a date.
We collect documentation and keys for the systems we are integrating with, and check their real limits.
We settle which field maps to which, and what to do when the two sides disagree.
We design the flow and the failure behaviour before any code exists. Reliability is decided here.
We write the integration with error handling and logging, so it is possible to see what went wrong and when.
We check what happens when the other side goes quiet or returns garbage. A buffer for your notes is in the deadline.
We deploy the integration to production and leave documentation another developer can follow.
We stay on for changes on the provider side. External APIs change without asking your permission.
Before you see the finished integration, a lot of invisible work happens first.
Before we design the first endpoint, we break your data into a coherent model and check how the connecting systems understand it. This step catches mismatches that would otherwise only surface during integration, when a fix is far costlier and risks breaking what already works.
REST or GraphQL - we choose for how the data will actually be used, not for what happens to be fashionable. We set a clear contract of what each endpoint takes and returns, so teams on both sides can work in parallel without constantly asking each other for details.
Swagger/OpenAPI is written alongside the code, not as a separate task endlessly pushed to the end. That keeps the documentation matching reality, and lets a developer on the other side - yours or a partner's - plug into the integration without phone calls and guesswork.
We check bad input, missing fields and rate limits, not just the happy path where everything goes perfectly. It is exactly on the edge cases that integrations most often fall over, so we force them on purpose before real production traffic does.
All of this work happens in the background so your systems finally talk to each other safely and without hand-copying data. A good integration is invisible - it just works - and that is what frees your team from the drudgery that used to eat hours.
Integrations and tooling that connect systems to the rest of the world: payments and KSeF, domains, Discord and webhooks, [service-to-service APIs](page:service-api), MCP servers and bots.
The same project can be bought three ways. Below, the same eight things checked against each of them.
Cheapest and fastest, until the page actually has to sell.
We price the actual scope and hold that number to the end.
A big team and a big budget, much of which pays for the process itself.
Tell us what your page has to do. A quote with a number and a date comes back within an hour.
Five things you see from the first message to the work after launch.
Services and pages related to this offer, and blog articles on the same subject.
Every project is quoted individually - regardless of scale, technology or stage. Contact us and we will reply within an hour. The quote is free.
