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Ruby library to query market data from cryptocurrency exchanges

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Cryptoexchange

Cryptoexchange is a rubygem for ruby developers to interact with multiple cryptocurrency exchange market data APIs in a single library.

Installation

Add this line to your application's Gemfile:

gem 'cryptoexchange'

And then execute:

$ bundle

Or install it yourself as:

$ gem install cryptoexchange

Exchanges Supported

Exchange Ticker Order Book Trade Account Market List
ANX Y User-Defined
Gatecoin Y Y
BTCC Y User-Defined
OKCoin Y User-Defined
LakeBTC
Huobi
Yunbi
BTC38
CHBTC
Bitstamp Y User-Defined
Bittrex
GDAX
Gemini
Kraken
Poloniex
Coincheck Y User-Defined
Bitflyer Y Y
Quoine
QuadrigaCX
Unocoin
Coinone Y Y
Korbit Y User-Defined
Bithumb
Luno
BTC-e
Bleutrade
Yobit
Bitfinex
BTER
Cryptopia Y Y
Livecoin Y Y
Nova Exchange Y Y
Bitcoin Indonesia Y User-Defined

Usage

List market pairs supported by an exchange

  client = Cryptoexchange::Client.new
  pairs = client.pairs('bitflyer')

Query the Ticker API

  pair = client.pairs('bitflyer').first
  ticker = client.ticker(pairs.last)
  ticker.base
  ticker.target
  ticker.last

Market List

Some exchange API do not support market pair listings. For those exchanges, we included a custom YML file to define the list of market pairs supported by that exchange. That configuration works out of the box, however if that exchange adds new market pairs, you as the user of Cryptoexchange can explicitly add those pairs instead of waiting for this library to be updated.

In the table above, look for the User-Defined under the Market List column.

The format of the yaml file should look like below. Name the file <exchange_name>.yml and place it under the config/cryptoexchange directory.

  :pairs:
    - :base: BTC
      :target: KRW
    - :base: ETH
      :target: KRW
    - :base: ETC
      :target: KRW

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/cryptoexchange. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

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