appId

Y

string

Unique identifier assigned by Alchemy Pay. You can find it in the merchant backend

timestamp

Y

string

Thirteen-digit timestamp

type

Y

string

Fixed value: sell

merchantOrderNo

Y

string

Merchant order number, Alchemy Pay will carry this parameter in the webhook, allowing you to track order information using this parameter.
The merchantOrderNo cannot be duplicated.

sign

Y

string

For the generation rules of the sign, please refer to this Click Here.URL encoding is required when concatenating to the request URL.

fiat

N

string

Fiat currency user received, check the supported fiat currencies by Alchemy Pay Click Here.
Upload this field, users cannot modify the fiat currency.
If use this field, uploadingcountry field is a must.

country

N

string

Required when uploading thefiat field.
Must correspond to the fiat field to be valid.
Follow the ISO 3166-1 alpha-2 standard.

cryptoAmount

Y

string

The quantity of the cryptocurrency that the user wishes to sell.

• *If passed, users will be unable to modify the cryptocurrency quantity.
  When passing cryptoAmount, crypto must be passed simultaneously, otherwise it will be meaningless.**

crypto

Y

string

The cryptocurrency that the user wants to sell. You can check the cryptocurrencies supported by Alchemy Pay Click Here.
If passed, users will not be able to select other cryptocurrencies.

network

Y

string

The cryptocurrency network that the user wants to sell. It is recommended to pass both the network and crypto parameters together to accurately limit the cryptocurrency the user can sell. You can check the supported networks Click Here.

• *If passed, users will not be able to modify the network.
  The crypto and network parameters must match; otherwise, the passed parameters will not take effect.**

email

N

string

Email used by the user. When you pass this parameter, we will pre-fill this email, but the user still needs to enter an email verification code to validate the email.

token

N

string

If you have already verified the email of your user and wish to skip the email verification process during the Alchemy Pay experience, you can pass this parameter.
For the token generation rules, please refer to Click Here.
If the token parameter is uploaded, the email parameter does not need to be uploaded.

language

N

string

Language of the ramp page opened by the user.
Spanish: es
Traditional Chinese:zh-HK
English:en-US
Vietnamese:vi
Indonesian:id
eg：language=en-US

showTable

N

string

If you want the ramp page to only display the off-ramp option, you can pass this parameter: showTable=sell

callbackUrl

N

string

After the user sells, Alchemy Pay will notify you of the payment result at this address.URL encoding is required when concatenating to the request URL.

merchantName

N

string

Merchant custom name, when merchants pass this name, the merchant name on the order completion page will be displayed according to this parameter.

withdrawUrl

N

string

If you wish for the user to go to your website for withdrawal after creating an order, you can pass this parameter. You can carry your order information in the withdrawUrl, so when Alchemy Pay redirects to this page, you can retrieve the corresponding information for the order.

urlType

N

string

APP:\"app\"
WEB:\"web\"
The type of the withdrawUrl that the user will be redirected to.