There are three input for this API, Loan Amount, Interest Rate, and Terms (in Months). All these input will be added as query parameters to the url.

For example, if we want to know the monthly payment on a 30 years loan with $300k principal and 5% interest rate, then we can build our parameters like following:

1. Loan Amount (loanAmount): 300000
2. Interest Rate (interestRate): 0.05
3. Terms (terms): 360

so our request url will look like following https://?loanAmount=300000&interestRate=0.05&terms=360