### GET Payment Widget

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

Creates a payment window for processing transactions.

```APIDOC
## GET Payment Widget

### Description
Creates a payment window for processing transactions.

### Method
GET

### Endpoint
`{{ base_payment_url }}/`

### Parameters
#### Query Parameters
- **sum** (number) - Required - Order amount in rubles.
- **signature** (string) - Required - Signature for order formation (sha256(login:sum:invid:apiKey)).
- **invid** (string) - Required - Order identifier in your system.
- **merchant** (integer) - Required - Identifier of the merchant in our system.
- **external_user_id** (string) - Optional - Identifier of the user who created the order in your system.
- **redirect_url** (string) - Optional - URL for redirection after payment.
- **callback_url** (string) - Optional - URL for callback notifications.
- **sender_bank** (string) - Optional - Parameter for selecting a bank.

### Request Example
```json
{
  "example": "curl --location -g '{{ base_payment_url }}/?sum=123&signature=hash&invid=235211079299&merchant=1&external_user_id=777&redirect_url=link.com&callback_url=callbackurl.com&sender_bank={bank.code}'"
}
```

### Response
#### Success Response (200)
No response body.

#### Response Example
No response body.
```

--------------------------------

### GET Request for Available Payment Limits

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

This snippet shows how to make a GET request to retrieve the available payment limits for different methods. The response is a JSON array detailing methods like 'c2c' and 'sbp' with their respective limits.

```curl
curl --location -g '{API_URL}/external/payin/available-limits'
```

--------------------------------

### GET Account Balance

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

Fetches the current account balance and frozen balance for the authenticated user. Requires an 'api-key' in the headers for authentication.

```curl
curl --location -g '{API_URL}/api/external/me/balance' \
--header 'api-key: {api-key}'
```

--------------------------------

### GET Create Payment Window

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

Generates a payment window for a given transaction. This endpoint requires several parameters including sum, signature, order ID, merchant ID, user ID, redirect URL, and callback URL. An optional sender bank can be specified.

```curl
curl --location -g '{{ base_payment_url }}/?sum=123&signature=hash&invid=235211079299&merchant=1&external_user_id=777&redirect_url=link.com&callback_url=callbackurl.com&sender_bank={bank.code}'
```

--------------------------------

### GET /external/me/balance

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

Retrieves the current account balance, including the available and frozen amounts.

```APIDOC
## GET /external/me/balance

### Description
Retrieves the current account balance.

### Method
GET

### Endpoint
`/external/me/balance`

### Parameters
#### Headers
- **api-key** (string) - Required - API key for authentication.

### Request Example
```json
{
  "example": "curl --location -g '{API_URL}/api/external/me/balance' \
--header 'api-key: {api-key}'"
}
```

### Response
#### Success Response (200)
- **balance** (number) - The available balance in the account.
- **frozen_balance** (number) - The amount currently frozen in the account.

#### Response Example
```json
{
  "balance": 123.4,
  "frozen_balance": 0
}
```
```

--------------------------------

### GET /orders/getBankAvailable

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

Retrieves a list of currently available payment methods for a given merchant, sum, operation, and currency.

```APIDOC
## GET /orders/getBankAvailable

### Description
Retrieves a list of currently available payment methods.

### Method
GET

### Endpoint
`/orders/getBankAvailable`

### Parameters
#### Query Parameters
- **merchant** (integer) - Required - Identifier of the merchant in our system.
- **sum** (number) - Required - Order amount in rubles.
- **operation** (string) - Required - Type of operation.
- **currency** (string) - Required - Desired currency.

### Request Example
```json
{
  "example": "/api/orders/getBankAvailable?merchant=1&sum=5000&operation=Пополнение&currency=RUB"
}
```

### Response
#### Success Response (200)
- **Body** (array of strings) - A list of available payment method identifiers (e.g., ["sberbank", "sbp"]).

#### Response Example
```json
[
  "sberbank",
  "sbp"
]
```
```

--------------------------------

### GET Available Payment Methods

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

Retrieves a list of currently available payment methods for a given merchant, sum, operation, and currency. This endpoint is crucial for displaying payment options to users.

```curl
curl --location -g '{API_URL}/api/orders/getBankAvailable?merchant=70&sum=6000&operation=%D0%9F%D0%BE%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5&currency=RUB'
```

--------------------------------

### GET /external/payin/available-limits

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

This endpoint retrieves the available payment limits for different payment methods. It returns a list of payment methods along with their respective minimum and maximum transaction limits.

```APIDOC
## GET /external/payin/available-limits

### Description
This endpoint retrieves the available payment limits for different payment methods. It returns a list of payment methods along with their respective minimum and maximum transaction limits.

### Method
GET

### Endpoint
`{API_URL}/external/payin/available-limits`

### Parameters
None

### Request Example
```bash
curl --location -g '{API_URL}/external/payin/available-limits'
```

### Response
#### Success Response (200)
- **method** (string) - The payment method (e.g., 'c2c', 'sbp').
- **limits** (string) - A string representing the range of available limits (e.g., '1000-5000').

#### Response Example
```json
[
  {
    "method": "c2c",
    "limits": "1000-5000"
  },
  {
    "method": "sbp",
    "limits": "1000-150000"
  }
]
```
```

--------------------------------

### POST /orders/check-status

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

This endpoint allows you to check the status of an order. It requires merchant ID, invoice ID, and a signature for authentication. The response includes the order's current status, associated details, and currency information.

```APIDOC
## POST /orders/check-status

### Description
This endpoint allows you to check the status of an order. It requires merchant ID, invoice ID, and a signature for authentication. The response includes the order's current status, associated details, and currency information.

### Method
POST

### Endpoint
`{API_URL}/orders/check-status`

### Parameters
#### Request Body
- **merchant** (integer) - Required - The ID of the merchant.
- **invid** (string) - Required - The unique identifier for the invoice.
- **signature** (string) - Required - A SHA256 hash for authentication, typically formed as `sha256('login:sum:invid:apiKey')`.

### Request Example
```json
{
  "merchant": 1,
  "invid": "test123",
  "signature": "sha256('login:sum:invid:apiKey')"
}
```

### Response
#### Success Response (200)
- **id** (integer) - The unique order ID.
- **invid** (string) - The invoice ID.
- **exist** (string) - Indicates if the order already exists.
- **time** (string) - The timestamp of the order status update.
- **status** (string) - The current status of the order (e.g., `completed`, `cancelled`, `processing`, `error`, `pending`, `unclaimed`).
- **operation** (string) - The type of operation (e.g., 'Пополнение').
- **card** (object) - Details about the payment card.
  - **number** (string) - The card number.
  - **telefon** (string) - The associated phone number.
  - **account_number** (string) - The account number.
  - **bank_id_code** (string) - The bank ID code.
- **currency** (string) - The currency of the transaction.
- **curs** (string) - The exchange rate.
- **sum** (string) - The initial sum of the transaction.
- **fact_sum** (string|null) - The actual sum of the transaction, if applicable.
- **fio** (string) - The full name of the account holder.
- **bank** (object) - Details about the bank.
  - **name** (string) - The bank's name.
  - **code** (string) - The bank's code.
  - **logo** (string) - The bank's logo URL.
  - **code_nspk** (string) - The NSPK code of the bank.
- **sbp** (boolean) - Indicates if the payment was made via SBP (System for Fast Payments).
- **account_transfer** (boolean) - Indicates if it was an account transfer.
- **trans_gov** (any|null) - Government transfer details, if applicable.
- **trans_gov_country** (any|null) - Government transfer country, if applicable.
- **appeal_insured** (boolean) - Indicates if the appeal is insured.

#### Response Example
```json
{
  "id": 212,
  "invid": "testinvid_1",
  "exist": "already",
  "time": "2025-06-06T16:39:06.000000Z",
  "status": "pending",
  "operation": "Пополнение",
  "card": {
    "number": "2222222222222222",
    "telefon": "72222222222",
    "account_number": "22222222222222223322",
    "bank_id_code": "000000000"
  },
  "currency": "RUB",
  "curs": "81.8856",
  "sum": "100.0000",
  "fact_sum": null,
  "fio": "Хогай Р",
  "bank": {
    "name": "Россельхозбанк",
    "code": "rosselkhozbank",
    "logo": "",
    "code_nspk": "100000000020"
  },
  "sbp": true,
  "account_transfer": false,
  "trans_gov": null,
  "trans_gov_country": null,
  "appeal_insured": false
}
```
```

--------------------------------

### POST Request to Check Order Status

Source: https://documenter.getpostman.com/view/24855881/2sB2x2LaNf/index

This snippet demonstrates how to send a POST request to check the status of an order. It requires merchant ID, invoice ID, and a signature for authentication. The response includes the order's current status and details.

```json
{
  "merchant": 1,
  "invid": "test123",
  "signature": "sha256('login:sum:invid:apiKey')"
}
```

```curl
curl --location -g '{API_URL}/orders/check-status' \
--header 'Accept: application/json' \
--data '{ \
  "merchant": 4, \
  "invid": "testinvid_1", \
  "signature": "sha256('\''login:sum:invid:apiKey'\'')" \
}'
```

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