REST API SearchCriteria for Quantity

Question

I try to get all active products with a quantity less then 5. I getall active products via

V1/products/?searchCriteria[filter_groups][0][filters][0][field]=status&searchCriteria[filter_groups][0][filters][0][value]=1&searchCriteria[filter_groups][0][filters][0][condition_type]=eq

But how do I add a filter to a quantity <5 ? I added this criteria, but it didnt work:

&searchCriteria[filter_groups][0][filters][1][field]=extension_attributes[stock_item[qty]]&searchCriteria[filter_groups][0][filters][1][value]=5&searchCriteria[filter_groups][0][filters][1][condition_type]=lt

Can somebody explan how to create a searchCriteria for nested fields? Because I think this seems to be the problem here...

Answer 1

I researched the documentation as of 2.4 there is no way to filter products based on quantity, so the only option left is to extend the rest api with some custom module.