Using a custom merchant, you can independently generate credentials, HTML forms, payment request links, and further process payments.

To configure a custom merchant, go to the "Application Settings" - "Custom Merchant Configuration (API)". You need to create a secret key that will be sent in the HTTP header "X-Authorization" and used for generating a digital signature.

curl -X POST 'https://YOUR.HOST' \

    --header 'X-Authorization: SECRET_KEY' \

    --header 'Content-Type: application/x-www-form-urlencoded' \

    --data-urlencode '0=127.0.0.1' \

    --data-urlencode '1=52a840d46a0c8680234f4e3a99112e5c' \

    --data-urlencode '2=1054441680' \

    --data-urlencode '3=10500.43' \

    --data-urlencode '4=2' \

    --data-urlencode '5=UAH' \

    --data-urlencode '6=CARDUAH' \

    --data-urlencode '7=4000000000000010'

Successful response (link):

{

    "success": true,

    "result": {

        "link": "https://exchanger-cms.com"

    }

}

Successful response (cryptocurrency address):

{

    "success": true,

    "result": {

        "address": "0x0000000000",

        "tag": ""

    }

}

Successful response (payment details):

{

    "success": true,

    "result": {

        "detail": "4000000000000000"

    }

}

Successful response (HTML form):

{

    "success": true,

    "result": {

        "action": "https://exchanger-cms.com",

        "keys": ["key"],

        "values": ["val"]

    }

}

Unsuccessful response:

{

    "success": false,

    "message": "Optional error message."

}

After processing the payment, you need to send a POST request to the exchange URL to change the request status to "Paid".

curl -X POST 'https://YOUR.DOMAIN/merchant-process/custom' \

    --header 'Content-Type: application/x-www-form-urlencoded' \

    --data-urlencode 'token=52a840d46a0c8680234f4e3a99112e5c' \

    --data-urlencode 'amount=10500.43' \

    --data-urlencode 'currency=UAH' \

    --data-urlencode 'txn=12345' \

    --data-urlencode 'sign=7cc51cba32fa11732065caee398aeb956fb88b0ca8069f050854a632900f5d37'