3rd-party Aggregate Rating Integration

Hello,

Thank you for contacting Rank Math for help with customizing your product schema.

The amount of customization involved to integrate the external API with your schema rating is beyond the scope of our support. However, here are some pointers.

You can use the wp_remote_get() function to pull the schema rating value from the API as described in the following article: https://pippinsplugins.com/using-wp_remote_get-to-parse-json-from-remote-apis/. You can then add a filter to display the new rating in your product schema. You’ll need to customize the following filter for this:

add_filter( 'rank_math/snippet/rich_snippet_product_entity', function( $entity ) {
    $entity['aggregateRating']['@type'] = 'aggregateRating';    
    $entity['aggregateRating']['ratingValue'] = $ratingValue; //ratingValue from API
    $entity['aggregateRating']['reviewCount'] = $reviewCount; //ratingValue from API
    return $entity;
});

Hope that helps. Please let us know if you have questions.