Create a Withdraw Request

/sapi/v1/sunperp/dw/withdraw/apply

Request type: POST

Signature verification: Yes

Interface permission: Withdraw

Rate Limit: Generally, the private interface rate limit of API key is at most 144 times every 3 seconds for each UID (Trade Interface: at most 72 times every 3 seconds. Read Interface: at most 72 times every 3 seconds) (this rate limit is shared by all the altcoins contracts delivered by different date).

Interface description: Initiate a withdrawal request

Request Address

Environment	Address
Online	​https://api.sunx.io​
Online (preferred by aws customers)	​https://api.sunx.io

Request Parameter

Parameter	Data Type	Required	Description	Value Range
address	string	true	Withdrawal address	should be the deposit address
currency	string	true	Currency	e.g. usdt
chain	string	true	Chain	e.g. trc20usdt
amount	string	true	Withdrawal amount
fee	string	true	Withdrawal fee	For trc20usdt, this value should be 0

Response Parameter

Parameter	Data Type	Required	Description	Value Range
status	string	true	Response state	"ok" or "error"
error-code	string	false	Error code
error-msg	string	false	Error message
<data>	object	true
nonce	string	true	The backend generates a random number. This number is unique to the user and is used to label the withdrawal request.	32-bit string, format in [0-9a-zA-Z]
content	string	true	The original text that requires the user's signature, the content is to serialize after adding the nonce parameter to the input parameters.
expired-at	long	true	Nonce expiration timestamp, current time + 120 seconds
</data>		false

Note：

• Should input 'CLOUD-EXCHANGE: 6X2K9L4V1C' in the request header

• API signature does not include the "/sapi/v1" part for url paths, only the "/sunperp/dw/xxx" is considered.

Request Example

POST https://api.sunx.io/sapi/v1/sunperp/dw/withdraw/apply?SignatureVersion=2&AccessKeyId=<your key>&Signature=<your signature>&SignatureMethod=HmacSHA256&Timestamp=2025-09-16T07%3A16%3A15
{
    "address": "TN1F755kgPevmwJZLUqbSaLfMmnVEz1EbV",
    "amount": "8.799999",
    "chain": "trc20usdt",
    "currency": "usdt",
    "fee": "0"

Response Example

{
    "status": "ok",
    "data": {
        "nonce": "85A6B8F36D591055",
        "content": "address:TN1F755kgPevmwJZLUqbSaLfMmnVEz1EbV,currency:usdt,chain:trc20usdt,amount:8.799999,fee:1.2,nonce:85A6B8F36D591055",
        "expired-at": 1757320137392
    }
}