For AI agents: visit https://upay-api-en.readme.io/llms.txt for an index of all pages formatted in Markdown and endpoints in OpenAPI.
| Safety factor | Explain | Required |
|---|
| Request IP | The requested IP address must pass through the address | True |
| Response IP address | The response will only be from that IP address. | True |
| Callback response confirmation | The partial response to the request will be double checked with a callback | False |
| Visit time | Each interface only supports a 60 second signature validity period, and a new signature is required if it exceeds the time limit. | True |
