# Additional Headers

### School ID

For API calls that are specific to **one** school, the **School ID** needs to be provided in the request headers. See the [Get Client Integrations](/v2/reference/settings/client-integrations/get-client-integrations.md) call for a list of your available School IDs.

Specify the school ID using:

> HTTP-X-SCHOOLID

#### Sample Code

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

```php
<?php

// API Credentials
$api_username = 'your_username';
$api_password = 'your_password';
$school_id = 'the_school_id';

// Base API endpoint
define('BASE_URL', 'https://integrate.d6plus.co.za/api/v2/learners');

// Optional: Set an ID to fetch a specific learner (or leave empty for all)
$id = '';

$url = BASE_URL;
if (!empty($id)) {
    $url .= '/' . $id;
}

// Initialize cURL
$curl = curl_init();

// Set cURL options
curl_setopt_array($curl, [
    CURLOPT_URL            => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT        => 30,  // Set timeout to prevent hanging requests
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION   => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST  => 'GET',
    CURLOPT_HTTPHEADER     => [
        "HTTP-X-USERNAME: $api_username",
        "HTTP-X-PASSWORD: $api_password",
        "HTTP-X-SCHOOLID: $school_id"
    ],
]);

// Execute request
$response = curl_exec($curl);

// Check for errors
$error = curl_error($curl);
if ($error) {
    curl_close($curl);
    throw new Exception("cURL Error: $error");
}

// Close cURL and output response
curl_close($curl);
echo $response;
```

{% endtab %}

{% tab title="cURL" %}

```bash
rl --request GET 'https://integrate.d6plus.co.za/api/v2/learners/123' \
     --header 'HTTP-X-USERNAME: your_username' \
     --header 'HTTP-X-PASSWORD: your_password' \
     --header 'HTTP-X-SCHOOLID: the_school_id'
```

{% endtab %}
{% endtabs %}


---

# Agent Instructions: Querying This Documentation

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

```
GET https://apidocs.d6plus.co.za/v2/getting-started/additional-headers.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.

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