### `vtupress_pin_api_providers`
Add new API routing provider definitions for Exam/Recharge Card Pins. This does not add a new network, but rather a new _API Provider_ (like VTPass or EPins) that developers can route traffic to.
**Before:** `[‘vtpass’ => [‘name’ => ‘VTPass API’, ‘pin_type’ => ‘recharge_card’, ‘countries’ => [‘nigeria’], ‘default_networks’ => [‘mtn’ => ‘1’]]]`
**Hook Example:**
```php
add_filter('vtupress_pin_api_providers', function($providers) {
$providers['my_custom_api'] = [
'name' => 'My Custom Educational API',
'pin_type' => 'education', // Can be 'education' or 'recharge_card'
'countries' => ['nigeria'],
'default_networks' => [
'waec' => 'exam_code_1',
'neco' => 'exam_code_2'
]
];
return $providers;
});
```**After:** New API provider schema is added and becomes available in the Admin routing dropdowns for Exam Pins.