How to Add Constraint With No Validation?

Square Payments API with CashApp and an Application Fee

Harris

I have been doing application fees with the regular Square credit card payments online. My question is can you do this with CashApp also? I can't tell from the documentation if there is a way to do this in anyway. If you don't know what an application fee is, it's a fee added onto the total that goes to the developer in question.

Below is how they do it with the Web Payments API.

https://developer.squareup.com/docs/web-payments/add-cash-app-pay

 function buildPaymentRequest(payments) {
   const paymentRequest = payments.paymentRequest({
     countryCode: 'US',
     currencyCode: 'USD',
     total: {
       amount: '1.00',
       label: 'Total',
     }
   });
   return paymentRequest;
 }

 async function initializeCashApp(payments) {
   const paymentRequest = buildPaymentRequest(payments)
   const cashAppPay = await payments.cashAppPay(paymentRequest,{
     redirectURL: 'https://my.website/checkout',
     referenceId: 'my-website-00000001',
   });
   await cashAppPay.attach('#cash-app-pay');
   return cashAppPay;
 }