How to organize the sale of in-game currency?

Question

Fintech

Good afternoon . Wanted to know if anyone had this problem.
It is required to give the user (player) the currency that is on his account. how to make payment to his account .
for example https://skins.cash
where you can specify a wallet and money can be withdrawn instantly. how to pay the user funds through which payment system, preferably through api, or will the person have to transfer payments to the players himself?

Answer 1

UnitPay has an API for bulk payouts.
Webmoney has an API for payments.
There are probably many more who have

Answer 2

Any payment system has an API for this. Any payment system has documentation. Search engines index these pages well and they are in the search results. What is the problem?