How to guide “KPN-Developer” Git repository.


We want to help you as a developer to build the user-friendly and convenient functionalities that you and your customers desire. That is why we designed a portal with high-quality developer-oriented products that are easy to integrate into your applications and services. Our products give you access to innovative communication, security, identity verification and more functionalities. All from a single account. This git repo contains the "Open API Specification" and Postman test Collection for different APIs. This Postman collection makes the API experience easy and seamless.

Access and Authentication:

The “KPN-Developer” repository can be accessed using the GIT repository link. It’s a public repository and can be accessed directly.

Repository Structure:

Repository name:

Every API has a separate repository, For example, "sms-kpn" in the image below. Also, the naming convention contains the name of the API provider. For example, "sms-kpn" suggests it is an API to send SMS, and the "KPN" offers the API.

Repository name

Repository folder structure:

Postman APIs:

The below marked folders contain the artifacts of the “Postman Collection”. Which includes the “APIs” and the “Postman Collections”.

Postman APIs
Open API Specification:

This folder contains the API Specification Document (Swagger file of the API).

Open API Specification

Prerequisite Services and Recommended Tools.


  • Postman (Mandatory): Postman is mandatory if you like to use the test collection for the APIs. You can also use it for checking the Open API Specification.

  • Swagger editor (Optional):

    Swagger editor can be used if you like to experience the Open API specification and don’t have postman. Note: This will give you only limited experience.


This is needed for testing, using collection or Open API specification.

  • Sign in to the “KPN Developer Portal.” 

  • Registration automatically creates a “sandbox” project. It will have an associated “Client ID” and “Client secret”. This project can be used to experience APIs in sandbox mode with a production-like feel with live data. The Client Id and Secret is used for authentication.

    Registration automatically creates a sandbox project

Getting Started:

Steps 1: Login to postman and create a workspace.

Step 2: Clone the API repository locally. Example “SMS-KPN”

Clone the API repository locally

Step 3: Go to the “Postman” workspace and select “import”.

Go to the Postman workspace and select import

Step 4: Select the “folder” option.

Select the folder option

Step 5: Select the checkbox “Import OpenAPI files” and press “Import". It will give you the "import complete" message.

Select the checkbox Import OpenAPI files

Step 6: You will have the imported “API“ and “Open API Specification” in the postman.

you will have imported API and Open API Specification in the postman

Step 7: The collection is ready for testing now. Update your “Client Id” and “Client Secret” and test the API.

The collection is ready for testing now

Step 8: Open API specification can be checked at the “Definition” section.

Open API specification can be checked at the Definition section

Additional Resources: