WooCommerce RESTFull API project

I need a small plugin that will change the behavior of the WooCommere RESTFull API. (this is already integrated in every WooCommerce install) The RESTFull API delivers a JSON array as the result of an API request. I need this changed to an XML result. You only have to use the integated hooks (filters and action) . You don't have to change the WooCommere source code (I will check this) This must work for all RESTFull API responses ( products, orders, customers, .... ) You have to work on your own server.