Here is what you need to know about how the bunq authentication works:
All requests must use HTTPS. HTTP calls will fail.
We use extra signing on top of HTTPS encryption that you must implement yourself if you are not using the SDKs.
You should use SSL Certificate Pinning and Hostname Verification to ensure your connection with bunq is secure.
The auto logout time that you set in the app applies to all your sessions including the API ones. If a request is made 30 minutes before a session expires, the session will automatically be extended.
Before you can start calling the bunq API, you must do the following:
register your API key and IP address(es);
register your device;
create a session.
We call this intro "creating an API context". There are a couple of ways to carry out the sequence of steps. Let's dwell on each of them.
Go to our GitHub page.
Choose the SDK in your language of choice.
Find and use the part dedicated to creating an API context.
Create an Installation by calling
POST v1/installation and passing your pre-generated public key. You will receive an installation Token. Use it when making the two following API calls.
Create a DeviceServer via
POST v1/device-server. Provide a description and a secret (API key in this case).
Create a SessionServer by executing
POST v1/session-server. You will receive an authentication Token. Use it in the API requests in this active session.
When you create a context in
POST v1/device-server, it ties the API key to your current IP address so it will not be useable from other IPs.
If you have several IPs (e. g. several servers), you can set a list of allowed IPs in
device-server request as an array. You must include your current IP in this array as to not lock yourself out.
As a last resort, you can also set a wildcard as an IP. In that case there will be no IP check for that API key. Please only do that if you have no other option.
It is possible to add trusted IP addresses using the IP endpoint. Obviously you need to make that request from an IP address that was allowed previously.
You will not be able to switch from concrete IPs to a wildcard IP after you've created a device-server. You can either request a new API key from the user or ask them to use Allow all IP Addresses option in the app.