API Guide

Upay Web API domain: https://vsi-api.shouqianba.com

Upay Web API accepts only JSON formatted HTTP requests. Please make sure to add Content-Type header and set its value to application/json for all requests.

All requests must be UTF-8 encoded; all responses are UTF-8 encoded as well.

All requests must be signed as instructed below:

Request Signature

• Upay Web API uses application layer signature mechanism. The UTF-8 encoded body (regardless of any formatting) byte stream is used for signature.
• The client sn and signature value should be in the Authorization header of HTTP requests. It will be validated by Upay Web API service.
• Signature algorithm: sign = MD5(CONCAT(body + key))
• HTTP header: Authorization: sn + " " + sign

Upay different sn & key

• For activation (/terminal/activate), please use vendor_sn and vendor_key for signature.Verdor_sn and key will be provided offline.
• For other requests (check-in, pay, refund, query, etc.), please use terminal_sn and terminal_key , which is returned in successful activation or check-in responses.