National Bank of Tajikistan API
Live official exchange-rate data from the National Bank of Tajikistan (NBT), the central bank of the Republic of Tajikistan, for the somoni (TJS): the NBT official rate for every published currency (normalised to one unit), a single currency's somoni-per-unit rate and inverse, a currency's official rate on a specific past date, and currency conversion between any two published currencies (including TJS) cross-computed through the somoni.
api.oanor.com/nbt-api