How to get products all custom attributes with values for API call??

[Megalight]

I create the Singel page application with react and use Bagisto admin.
I need to get products all custom attributes for filtering products.
I have a custom attribute range (in admin) with values [200,500,1000]. I want to be shot to the user all that, if hi click to some value show products have that value (custom filtering logic);

How to get custom attributes????

[vishalK]

Hi @Megalight
You can use product view helper to get custom attributes of product
$customAttributeValues = $productViewHelper->getAdditionalData($product)
Thanks