a reverse lookup tool to check what items retainers are selling
the tool takes a snapshot of the entire market on a world, using the latest data from the universalis.app API and then going through every available listing to check for the entered name(s)
a friend was curious if this was possible - and since I already did most of the work dealing with the APIs (using my packages Eisenhuth/universalis-swift and Eisenhuth/xivapi-swift) this turned out to be fairly quick and easy