Payment processiing from inside UE on Windows?

We are working on a F2P game and I wonder if there’s any solution to this or perhaps if anyone managed to integrate PayPal (or Stripe) API with an Unreal game?
The idea is that players can input their credit card details and purchase stuff without having to throw them out of the game and open a web browser…

Any ideas or experiences to share would be great! Thank you

You can display a web browser within the game if necessary, but I don’t think that there’s any in-game payment systems available for Windows.