/wp-json/wc/v3/products?category=ID
$page = 1;
$products = [];
$all_products = [];
do{
try {
$products = $wc->get('products',array('per_page' => 100, 'page' => $page));
}catch(HttpClientException $e){
die("Can't get products: $e");
}
$all_products = array_merge($all_products,$products);
$page++;
} while (count($products) > 0);