> For the complete documentation index, see [llms.txt](https://docs.trybit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.trybit.com/api-reference-v2/authorization.md).

# 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.trybit.com/v2/invoice/create \
-header "Authorization: Token eyJ0eXAi1iJKV1QiLCJhbGci1iJIAcI1NiJ9.eyJpZCI6MTMsImV4cCI6MTYzMTc4NjQyNn0.HQavV3z8dFnk56bX3MSY5X9lR6qVa9YhAoeTEH"
```

{% endtab %}

{% tab title="Python" %}

```python
import requests

url = "https://api.trybit.com/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.trybit.com/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($ch, CURLOPT_URL, "https://api.trybit.com/v2/invoice/create");
curl_setopt($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."
    }
}
```


---

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```
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