API Explanation

Request Type


Request URI



Parameter Type Required Description Remark
amount String Yes Transaction Amount cent is the unit, “100” means a dollar
callbackURL String Yes Callback URL Send notifications to this URL when an order is complete (Maximum length 255 English characters)
returnURL String Yes Return URL After the payment is completed, will navigate to this URL (Maximum length 255 English characters)
remark String No Remark Remark(Maximum length with 128 English characters)

Request Example:

  "amount": "100",
  "callbackURL": "https://your.callback.url",
  "returnURL": "https://your.return.url",
  "remark": ""


Parameter Type Description Remark
payInfo String Payment Navigation Link
merchantId String Merchant ID
amount String Transaction Amount
paymentId String Payment Id

Response Example:

  "status": "SUCCESS",
  "result": {
    "payInfo": "https://hkqrpay.ottpay.com/hk-public-wechatpay?merCode=15ee1f20e263dbbd6311df1da004ee2e&amount=10&paymentId=16800235431079665&remark=MTIzNDU2&returnURL=aHR0cHM6Ly93d3d3Lm90dC5jYQ==&callbackURL=aHR0cHM6Ly93d3d3Lm90dC5jYQ==",
    "merchantId": "HK00008875",
    "paymentId": "16800235431079665",
    "amount": "10"

payInfo contains Payment Navigation Link, which is used to navigate to the web page to complete the payment