Basic Information

All requests must include the mid, salt, and sign parameters in the request body, as well as any additional parameters specified in the documentation for the specific method.

Base URL

https://severpay.io/api/merchant

Request Headers

Name	Value
Content-Type	application/json

Request Body

Name	Type	Required	Description
mid	integer	Yes	Merchant ID
salt	string	Yes	Randomly generated string
sign	string	Yes	Request signature

---

Signature generation algorithm:

1. The signature is generated using the data array sent in the request body
2. The array is sorted by keys
3. The sign signature is calculated using HMAC-SHA256 based on the JSON representation of the array and the secret token key
4. The signature is added to the array

$mid = 1;
$token = '041131a0906b08a5bebc1d4fdcc6d9';

$body = [
    'mid'  => $mid,
    'salt' => bin2hex(random_bytes(8)),
];

ksort($body);

$body['sign'] = hash_hmac(
    'sha256',
    json_encode($body, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES),
    $token
);

Attention

The example shows only the required request body parameters. The signature must be generated based on the fully populated body, including all transmitted parameters.