OnlinePay API
CONTENTS
API Reference
POST
Credit Card
POST
Alipay
POST
Union Pay
POST
WeChat
POST
PIX
POST
GCash
POST
Crypto Pay
POST
SEPA
POST
Payout
POST
Payout CheckOut
POST
OnlinePay CheckOut
POST
Refund
POST
Query
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How to start

1. Apply for Merchant Id and Key#

1.1 Complete registration in the OnlinePay Merchant
1.2 Login to the OnlinePay Merchant, go to Personal Centre - User Management - Personal Information, and obtain the PrivateKey

2 Parameter signature#

2.1 Depending on the payment method, confirm the interface used
2.2 If the sign parameter of the interface is MD5(A+B+C+PrivateKey)
2.3 The MD5 value generated by MD5(A+B+C+PrivateKey) will be converted to all upper case and the result will be the value of the sign

3. Calling the payment interface#

Call the interface using the restful method

4. Refund#

When a customer needs a refund, they can call the Refund interface