Implementation for the API available in this site: https://free.currencyconverterapi.com

This uses Tesla library to make easier the access to the endpoint and Nebulex for the cache and avoid to perform so many queries to the service.

If available in Hex, the package can be installed by adding currency_convert_api to your list of dependencies in mix.exs:

def deps do
  [
    {:currency_convert_api, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/currency_convert_api.

CurrencyConverterApi.convert_call "USD", "EUR"
# 0.876545

Enjoy!