> For the complete documentation index, see [llms.txt](https://partner.doc.bunq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://partner.doc.bunq.com/documentation/bunq-as-a-service/chapter-0-setting-up-api-context.md).

# Chapter 0: Setting Up API context

## Chapter 0: Setting up API context

When integrating with the bunq API, security is a top priority. Instead of relying solely on API keys, bunq uses a **three-step authentication process:**

* installation,
* device registration,
* session creation

to ensure secure and controlled access. This approach prevents unauthorized use, protects sensitive financial data, and aligns with banking security standards like PSD2. Here’s how each step enhances security while keeping API access flexible and manageable.**Pro Tip: Simplify with Postman**Using our Postman examples makes API integration super easy. We've pre-filled all the requests with environment variables, streamlining the process and reducing the risk of errors. It's by far the quickest way to get a live session, to play around with until you fully commit to a integration in your own application.This setup allows you to focus more on development and less on configuration, ensuring a smoother experience.POSTMAN TO BE UPDATED

**What's next**

In the following pages you'll have a closer look on how to create your API Context by calling each of the 3 endpoints we explained here.