fx is a simple currency exchange rate API. It currently supports MUFG
published rates between 31 currencies and JPY.
Full API documentation can be found at
https://fx.ianlewis.org/.
The API is a static file API. Canonical data is stored in Protocol Buffers format. API static files are built at deploy time.