The daily programs do not talk
In a company in Medellín the order enters through the store, stock lives in a sheet and the invoice leaves another program. Someone copies the code, the price and the quantity. When the day is busy, a line is skipped. API integration removes that copy: one system tells the other when the data changes. Without that piece, each tool has its own truth and the close of the day argues which one is right.
An external API is not a universal plug. There is authentication, a format, a call limit and an error when the other side is down. Pasting an example from the internet does not leave your business flow in place. REST API development in Colombia has to say which data leaves, which data enters and what happens if the answer is late. That is written before coding.
Your own API, on .NET, against what already exists
.NET development in Medellín, in this studio, uses ASP.NET Core to expose or consume REST APIs. If the other system already publishes an API, we consume it. If it only exports a file or opens its database, the scope names that path and we do not promise an API the vendor does not have. External API integration keeps retries, a log of what was sent and a screen to see the failure without reading code.
We do not start by connecting ten systems. The first version, €500, covers one flow: for example, an order that creates the inventory movement, or a product that goes out to the store. That amount is credited if the project continues. When there are several users, rules and screens, the web application reference starts at €4,500. The code is in your name when payments are complete. Thirty days cover defects in what was delivered. Support, if you want it, is €150 a month with no lock-in.
What you get
- A list of data that enters and leaves, and of what stays out.
- A REST API on .NET, or the connector to the external API that already exists.
- A log of sends, errors and retries.
- Code in your name and thirty days to correct the delivery.
The test uses a real piece of business data, not an example that later looks nothing like the order. If the other vendor is slow to grant access, the milestone waits for that key: we do not invent an integration that could not be tested.
Reference price
The first version of a single integration flow starts at €500 and is credited if you continue. A web application with users and rules starts at €4,500. Monthly support is €150, with no lock-in. Amounts in EUR, on the pricing page. Payment goes by milestones, near 40, 30 and 30 percent, through PayPal, Wise, Mercado Pago, bank transfer or USDT.
Case: several brands, one system
La Bodega de Nacho, MaxiOferta and MyTienda run on one platform with a space of its own for each brand. It is not a published integration with a third-party ERP: it is a system of our own where catalog, order and inventory are not copied by hand between brands. We do not publish a usage figure. The case shows that in Medellín we already join operations that used to live apart.
If the other system is a desktop ERP, continue with ERP integration with the store.
Questions about API integration
Do you develop REST APIs?
Yes. On ASP.NET Core, to expose your data or to consume an external API. The scope names the resource, the authentication and which error is stored. We do not deliver a list of endpoints without a business flow.
Does external API integration depend on the other vendor?
Yes. If there is documentation and a key, we consume that API. If there is only a file or a database, that is the path and it is written in the scope. We do not promise to connect a program that will not let the data out.
Do you integrate APIs only in Medellín?
The studio is in Medellín and this page is for companies in the city and in Colombia. We also take remote projects in Latin America and Europe. The delivery is the same: code, a tested flow and the system in your name when you pay.
How do I start API development?
Through the form or krats.tech@gmail.com. If you prefer WhatsApp, say so in the message. Tell us which two systems must match and whether the other side already has an API.
I want two systems to talk
Describe the order, the product or the invoice that is copied by hand today. We tell you whether it fits a €500 first version. The form is on this site; WhatsApp if you ask for it in the message.