The App:

This is a web app that will find out what the best exchanges would be to convert bitcoin to other digital currencies such as Ethereum, Litecoin, and DASH. It returns the best rates possible based on the exchange API used.

This app is currently deployed on Heroku: Digital Currency Converter

Features I'd like to Add:

• Add an endpoint that takes params to convert for any currency to any other currency. The app currently has hardcoded constants for the currencies (see the lib/constants.js file).
• Add a API call generator method to more easily build other API calls such as BTC-E

Endpoints:

Some of these endpoints result in larger outputs that have been described in more detail in this gist: A Full Description of the Outputs From All Endpoints

• GET request to the path /:api/:currency/optimal_exchange_rate returns JSON with processed data for the exchange rate for a specified currency to BTC from a specified API.

{
  dataSource:"bittrex",
  data: [
    {
      dataSource:"bittrex",
      currency:"ltc",
      averageExchangeRate:306.96,
      highestExchangeRate:311.51,
      lowestExchangeRate:298.06,
      latestExchangeRate:
        {
          exchangeRate:308.99,
          timeStamp:"2017-03-10T04:16:17.683Z"
        }
    }
  ]
}

• GET request to the path /optimal_exchange_rates returns JSON with the best (sorted by API) exchange rates for the above currencies to BTC.

• GET request to the path /all_exchange_rates returns JSON for all data returned from each API for each currency.