Barion Shop Authentication

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What is shop authentication?

The API endpoints related to handling the payment flow of a shop are accessible using the shop's own unique API key, a so called POS key. For a full list of such endpoints see List of Barion API endpoints.

Using POS keys

To use an endpoint which requires shop-level authentication, put your API key in the request's body in a property named PosKey:

     "PosKey": "00000000-0000-0000-0000-000000000000",

or in the case of a GET request, in the url query string with the same key.


If the key is invalid you will receive an AuthenticationFailed error.

Managing POS keys

A POS key is automatically generated for your shop when you create it, and cannot be changed later. To obtain it, either

  • get the key from the confirmation e-mail that was sent to you when you opened the shop, or
  • go to the shop's detail page on the Barion secure site and use the Secret key value ( -> Manage my shops -> Details)

Be aware that the test and live environment are completely separate environments, you need to create different shops. Make sure that you use the POSkey and not the public key: