WoW: Modified Slot Typ Items / Item Quality

Hey,

is there any API i am missing for recieving the possible items for a specific “Slot Type”?

The category for the slots only gives very little informations:

{
  "_links": {
    "self": {
      "href": "https://us.api.blizzard.com/data/wow/modified-crafting/category/59?namespace=static-10.0.2_46479-us"
    }
  },
  "id": 59,
  "name": "Draconium Ore"
}

There is no list of IDs for usable items for the category/slot type.
Am i missing some links?

Also the item itself has no indication which quality it is.
“Draconium Ore” can be quality 1, 2 or 3 and all the qualitys have seperate item_ids but in the item data itself there is no “quality” attribute. So how can they relate to each other?