Payment API integration
[https://business.paysend.com/help/payment-api](https://business.paysend.com/help/payment-api)
- Obtain your shop integration API key - [https://business.paysend.com/help/payment-api#obtain-your-shop-integration-api-key](https://business.paysend.com/help/payment-api#obtain-your-shop-integration-api-key)
- Authentication - [https://business.paysend.com/help/payment-api#authentication](https://business.paysend.com/help/payment-api#authentication)
- Payment Flow - [https://business.paysend.com/help/payment-api#payment-flow](https://business.paysend.com/help/payment-api#payment-flow)
- Apple Pay payments - [https://business.paysend.com/help/payment-api#apple-pay-payments](https://business.paysend.com/help/payment-api#apple-pay-payments)
- Common information - [https://business.paysend.com/help/payment-api#common-information](https://business.paysend.com/help/payment-api#common-information)