# Request Authorization

### Authorization header

To authorize each API request, pass your API KEY in the `Authorization` header as follows:

```
Authorization: Token <API KEY>
```

### Example of a request with a token

An example of using the `Authorization` header in an API request:

{% tabs %}
{% tab title="cURL" %}

```bash
curl -X POST https://api.cryptocloud.plus/v2/invoice/create \
-header "Authorization: Token eyJ0eXAi1iJKV1QiLCJhbGci1iJIAcI1NiJ9.eyJpZCI6MTMsImV4cCI6MTYzMTc4NjQyNn0.HQavV3z8dFnk56bX3MSY5X9lR6qVa9YhAoeTEH"
```

{% endtab %}

{% tab title="Python" %}

```python
import requests

url = "https://api.cryptocloud.plus/v2/invoice/create"
headers = {
    "Authorization": "Token eyJ0eXAi1iJKV1QiLCJhbGciOiJIAcI1NiJ9.eyJpZCI6MTMsImV4cCI6MTYzMTc4NjQyNn0.HQavV3z8dFnk56bX3MSY5X9lR6qVa9YhAoeTEH"
}

response = requests.post(url, headers=headers)

if response.status_code == 200:
    print("Success:", response.json())
else:
    print("Fail:", response.status_code, response.text)
```

{% endtab %}

{% tab title="JavaScript" %}

```javascript
const url = 'https://api.cryptocloud.plus/v2/invoice/create';
const headers = new Headers({
    'Authorization': 'Token eyJ0eXAi1iJKV1QiLCJhbGciOiJIAcI1NiJ9.eyJpZCI6MTMsImV4cCI6MTYzMTc4NjQyNn0.HQavV3z8dFnk56bX3MSY5X9lR6qVa9YhAoeTEH'
});

fetch(url, { method: 'POST', headers })
    .then(response => {
        if (response.ok) {
            return response.json();
        } else {
            return Promise.reject('Auth error');
        }
    })
    .then(data => {
        console.log('Success:', data);
    })
    .catch(error => {
        console.error('Fail:', error);
    });
```

{% endtab %}

{% tab title="PHP" %}

```php
<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://api.cryptocloud.plus/v2/invoice/create");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
$headers = array(
    "Authorization: Token eyJ0eXAi1iJKV1QiLCJhbGciOiJIAcI1NiJ9.eyJpZCI6MTMsImV4cCI6MTYzMTc4NjQyNn0.HQavV3z8dFnk56bX3MSY5X9lR6qVa9YhAoeTEH"
);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error cURL: ' . curl_error($ch);
} else {
    $statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    if ($statusCode == 200) {
        echo "Success: " . $response;
    } else {
        echo "Fail: " . $statusCode . " " . $response;
    }
}

curl_close($ch);
?>
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
You don't need to send a separate authorization request. API KEY should be transferred in the Authorization header.
{% endhint %}

### Possible errors

| Response code      | Error key    | Error description |
| ------------------ | ------------ | ----------------- |
| 400                | Bad request  | Invalid request   |
| Некорректный токен | Unauthorized | Invalid token     |

### Example of a response with an error

```json
{
    "status": "error",
    "result": {
        "authorization": "Unauthorized request."
    }
}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.cryptocloud.plus/en/api-reference-v2/authorization.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.