# API Authentication

### API Authentication

To authenticate your API requests, you need to include a header called `x-helium-api-key` in every API call.

#### Header Format

```makefile
 x-helium-api-key: your_api_key_here
```

#### Example

Below is an example of how to include the `x-helium-api-key` header in a request using different tools and languages.

**cURL**

```sh
curl -X GET {api_base_url}/api/v1/tags/{id}" -H "x-helium-api-key: your_api_key_here"
```

**JavaScript (Fetch API)**

```javascript
fetch(api_base_url+'/api/v1/tags/{id}', {
  method: 'GET',
  headers: {
    'x-helium-api-key': 'your_api_key_here'
  }
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));
```

**Python (Requests)**

<pre class="language-python"><code class="lang-python"><strong>import requests
</strong>
url = api_base_url+"/api/v1/tags/{id}"
headers = {
    'x-helium-api-key': 'your_api_key_here'
}

response = requests.get(url, headers=headers)
print(response.json())
</code></pre>

#### Adding the Header in Postman

1. Open Postman and select your request.
2. Go to the "Headers" tab.
3. Add a new header with the key `x-helium-api-key` and set the value to `your_api_key_here`.

By including the `x-helium-api-key` header in every request, you ensure that your API calls are authenticated and authorized to access the resources.