post https://api.tilby.com/v2/items
You must know first the department id and the category id. The category id can be not set, in this case its value will be null, and the item will be shown in the section No category of the app. If the item is a restaurant item you must know if he has allergens and insert the ids in the allergents node of json. If this item has ingredients, you can specify the components ids.