How to Map Item/Appearance IDs to Transmog Sets?

Hi,

I’m working on a tool that pulls raid loot from the WoW Game Data API.
Right now I can go from Raid → Encounters → Items → Appearance IDs, but I can’t find any documented way to map those appearance IDs to their corresponding transmog set IDs.

The item-appearance/set endpoint lets me go set → appearances, but I can’t see a reverse mapping (appearance → set) anywhere in the spec.

My questions:

  1. Is there an official way to get an appearance’s set directly from Blizzard’s API?
  2. If not, has anyone found a reliable workaround or external data source to correlate them?

Thanks in advance!

there is no reverse reference you basically need to take every items appearance id and match it to an appearance endpoint and matching set, meaning you need to have all the appearance sets and item id’s with them to match them to an item just how its been since the start