CoinMarket

Ruby API client for crypto market statistics. Currently uses the CoinMarketCap API.

Endpoints update every 5 minutes.
Please limit requests to no more than 10 per minute.

See the link above for more information.

Installation

Add this line to your application's Gemfile:

gem 'coin_market'

And then execute:

$ bundle

Or install it yourself as:

$ gem install coin_market

Usage

Fetch statistics about a specific token:

res = CoinMarket::Ticker.get('bitcoin')
puts "#{res.symbol}: #{res.price}"
# => BTC: 15330.8
puts "#{res.name}: #{res.market_cap}"
# Bitcoin: 256933859710.0
puts res.percent_change(period: '1h')
# => -1.03
puts res.percent_change(period: '24h')
# => 6.42

Or fetch statistics for all of the top 100 currencies (based on market cap):

res = CoinMarket::Ticker.all
puts res[0..10].map(&:name).join(', ')
# => Bitcoin, Ethereum, Bitcoin Cash, Ripple, Litecoin, Cardano, IOTA, Dash, NEM, Monero, Bitcoin Gold

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/zapnap/coin_market. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to follow the code of conduct.

License

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