| Guide |
Use Case |
In-App Payment Product introduction |
| Development Guide |
In-App Payment Development Guide |
| Public API |
Order Placement |
Call Payment API from APP |
| Call Payment |
the merchant server first calls the [Order Placement API] to generate a prepayment order, and signs the obtained parameter prepay_id again before transferring it to the app to initiate payment. |
| Refund Application |
The Merchant can refund the Payer via this API. |
| Query Order |
This API allows inquiry of all payment orders made from WeChat. |
| Query Single Refund |
After submitting a refund request, check the refund status by calling this API |
| Query All Refunds |
After submitting a refund request, check the refund status by calling this API |
| Downloading Reconciliation |
Merchants can download the transaction history via this API |
| Close Order |
This API needs to be called before a merchant wants to create a new order due to the Payer failing to pay for an order. The original order will be closed in order to avoid repeat payment. |
| Downloading Platform Certificate |
WeChat Pay will change the platform certificate from time to time due to certificate validity and for transaction security. WeChat Pay provides a range of APIs to help merchant backend system replace the certificate easily. |
| Payment Result Notification |
After completing a payment, the WeChat payment system will send the relevant payment result and user information to the Merchant. |
| Refund Notification |
After completing refund, the WeChat payment system will send the refund result to the Merchant. |
| Query Fund Settlement Details |
After a transaction has been closed, the merchant can query the details of both settled funds (sette_state is SETTLED) and unsettled funds (sette_state is UNSETTLE) by settlement date. |
