API access to effective / historical currency rates

[jborg]

I'm trying to find an efficient way to fetch the latest currency rate for all currencies in the system versus SEK without having to fetch every single currency rate in the system since that would be very inefficient especially since the API seems to lack pagination.

In the UI I can get all the data I want on a single screen by going to the Currency rates screen and selecting the Effective currency rates tab:

How do I do that using the API? 

The /controller/api/v2/currencyrate endpoint seems to want to either return all currency rates in the system or only currency rates for specific dates. Unfortunately I don't know or care the exact date I just want to get the latest exchange rate for each currency pair.

According to this old post it seems to have been possible before but the following api endpoint does not seem to be available anymore:

Any ideas?