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POST
/
payment
/
open
/
institution
/
v1
/
pay
/
convert
Initiate Convert
curl --request POST \
  --url https://openplatform.gateapi.io/payment/open/institution/v1/pay/convert \
  --header 'Content-Type: application/json' \
  --header 'X-GatePay-Certificate-ClientId: <x-gatepay-certificate-clientid>' \
  --header 'X-GatePay-Nonce: <x-gatepay-nonce>' \
  --header 'X-GatePay-On-Behalf-Of: <x-gatepay-on-behalf-of>' \
  --header 'X-GatePay-Signature: <x-gatepay-signature>' \
  --header 'X-GatePay-Timestamp: <x-gatepay-timestamp>' \
  --data '
{
  "clientReqId": "181147",
  "sellCurrency": "GT",
  "buyCurrency": "USDT",
  "buyAmount": "1",
  "sellAmount": "0.04464002",
  "quoteId": "PAY-2a5743d8"
}
'
{
  "status": "SUCCESS",
  "code": "000000",
  "errorMessage": "",
  "data": {
    "order_id": "327196066546229248",
    "userId": 10002,
    "sellCurrency": "GT",
    "buyCurrency": "USDT",
    "sellAmount": "0.04464002",
    "buyAmount": "1",
    "status": 1,
    "rate": 22.40142365527614,
    "quoteId": "PAY-2a5743d8",
    "createTime": 1739971221273
  }
}

​
Overview

This page documents the POST /payment/open/institution/v1/pay/convert endpoint. The full schema, parameters, and examples are rendered from the linked OpenAPI definition above.

​
Notes

Headers

​
X-GatePay-Certificate-ClientId
string
required

Merchant client ID assigned when registering the application

Example:

"mZ96D37oKk-HrWJc"

​
X-GatePay-Signature
string
required

Request signature for verification

Example:

"8504fe097f7297f8952c76e628ce59dbc93d1df64c95f26c73140ef365d4aa1471826ada0534315461682ec35c131d7e133c51d2ab0822fe7366650a111887ba"

​
X-GatePay-Timestamp
string
required

UTC timestamp in milliseconds

Example:

"1740019013818"

​
X-GatePay-Nonce
string
required

Random string, recommended length within 32 characters

Example:

"9722139164"

​
X-GatePay-On-Behalf-Of
string
required

Required delegated-subject header. Provide the initiating account ID for this request. For institution merchant APIs, this is typically the target sub-account ID; for institution charge and transfer APIs, it can be either an institution account ID or a sub-account ID.

Body

application/json
​
clientReqId
string
required

Client request ID (randomly generated by the user to ensure idempotency)

​
quoteId
string
required

Quote ID (must match the one returned by the preview interface)

​
buyAmount
string
required

Purchase amount (must match the one returned by the preview interface)

​
buyCurrency
string
required

Purchase currency (must match the one returned by the preview interface)

​
sellAmount
string
required

Sell amount (must match the one returned by the preview interface)

​
sellCurrency
string
required

Sell currency (must match the one returned by the preview interface)

Response

200 - application/json

Success

​
status
string
​
code
string
​
errorMessage
string
​
data
object