API Center

Read API Documentation

• Agent Merchant API

The API detail pages include endpoint purpose, request parameters, response fields, JSON request examples, JSON response examples, and common status values. Merchants can complete integration directly from the website without downloading an OpenAPI file.

Payment and transfer documents also include callback request format, signature fields, merchant response requirements, timeout, and retry rules.

Which Document Should I Use?

Agent merchants

Use the Agent Merchant API when upstream channel selection is transparent to the merchant. Requests do not include upstream route fields; the backend routes by the enabled ISV channel configuration.

Endpoint Groups

Trade

• POST /unipay/pay
• POST /unipay/close
• POST /unipay/inqury
• POST /unipay/transfer

Options

• POST /unipay/options/pay-methods
• POST /unipay/options/payee-types
• POST /unipay/options/payee-codes

Query

• POST /unipay/query/payOrder
• POST /unipay/query/transferOrder

Sync

• POST /unipay/sync/order/pay

OpenAPI Download

• Download Agent Merchant OpenAPI 3.0 YAML

The YAML files are optional and are intended for Bruno or other OpenAPI-compatible tools.

See Security & Signature and Error Codes for integration details.