Thank you for posting this! I had no idea this existed.

It looks like all the rates are published with EUR as a base currency, so if you wanted to get the USD <> KRW exchange rate, you would have to use EUR at an intermediate. This is probably good enough for most applications.

For anyone else that was wondering, this XML feed is linked off of this page (as well as CSV, RSS, and PDF): https://www.ecb.europa.eu/stats/policy_and_exchange_rates/eu...