CoinMarketCap Ruby API Client

Gem Version Build Status

A ruby API client for CoinMarketCap

Table of Contents

Installation

Add this line to your application's Gemfile:

gem 'coinmarketcap-ruby-client'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install coinmarketcap-ruby-client

Usage

Get an API Key

Create an account on CoinMarketCap and get copy the API key from the developer console.

Configure

CoinMarketCap::Api.configure do |config|
  config.api_key = 'api_key'
  config.user_agent = 'custom/user_agent' # Default: 'CoinMarketCap Ruby Client/1.0.0'
  config.user_agent = 'https://pro-api.coinmarketcap.com/v1' # Default: 'https://pro-api.coinmarketcap.com/v1'
end

Get CoinMarketCap ID Map

Fetches the CoinMarketCap ID Map. By default this endpoint returns cryptocurrencies that have actively tracked markets on supported exchanges.

cryptocurrencies = client.map

currency = cryptocurrencies.first
currency.id # 825
currency.name # 'Tether'
currency.symbol # 'USDT'
currency.rank # 5
currency.slug # 'tether'
currency.is_active # 1
currency.first_historical_data # <Date: 2015-02-25 ((2457079j,0s,0n),+0s,2299161j)>
currency.last_historical_data # <Date: 2021-10-05 ((2459493j,0s,0n),+0s,2299161j)>

platform = currency.platform
platform.id # 1027
platform.name # 'Ethereum'
platform.symbol # 'ETH'
platform.slug # 'ethereum'
platform.token_address # '0xdac17f958d2ee523a2206206994597c13d831ec7'

See CoinMarketCap ID Map for detailed documentation.

Get Cryptocurrency Metadata

Fetches static metadata available for one or more cryptocurrencies.

  info = client.info(symbol: 'ETH')

  metadata = info['ETH']
  metadata.id # 1027
  metadata.name # 'Ethereum'
  metadata.symbol # 'ETH'
  metadata.category # 'coin'
  metadata.description # 'Ethereum (ETH) is a cryptocurrency . Users are able to generate ETH ...'
  metadata.slug # 'ethereum'
  metadata. # 'https://s2.coinmarketcap.com/static/img/coins/64x64/1027.png'
  metadata.notice # ''
  metadata.tags # ['mineable', 'pow', 'smart-contracts', ...]
  metadata.platform # nil

  urls = metadata.urls
  urls.website # ['https://www.ethereum.org/', 'https://en.wikipedia.org/wiki/Ethereum']
  urls.twitter # ['https://twitter.com/ethereum']
  urls.message_board # ['https://forum.ethereum.org/', 'https://ethresear.ch/']
  urls.chat # ['https://gitter.im/orgs/ethereum/rooms']
  urls.explorer # ['https://etherscan.io/', 'https://ethplorer.io/', 'https://blockchair.com/ethereum', ...]
  urls.reddit # ['https://reddit.com/r/ethereum']
  urls.technical_doc # ['https://github.com/ethereum/wiki/wiki/White-Paper']
  urls.source_code # ['https://github.com/ethereum']
  urls.announcement # ['https://bitcointalk.org/index.php?topic=428589.0']

See Cryptocurrency Metadata for detailed documentation.

Get Latest Listings

Returns a paginated list of all active cryptocurrencies with latest market data.

  listings = client.listings_latest
  listing = listings.first

  listing.id # 1
  listing.name # 'Bitcoin'
  listing.symbol # 'BTC'
  listing.slug # 'bitcoin'
  listing.num_market_pairs # 8527
  listing.date_added # <Date: 2013-04-28 ((2456411j,0s,0n),+0s,2299161j)>
  listing.tags # ['mineable', 'pow', 'sha-256', 'store-of-value', ...]
  listing.max_supply # 21000000
  listing.circulating_supply # 18837706
  listing.total_supply # 18837706
  listing.platform # nil
  listing.cmc_rank # 1
  listing.last_updated # <Date: 2021-10-08 ((2459496j,0s,0n),+0s,2299161j)>

  quote_in_usd = listing.quote['USD']

  quote_in_usd.price # 53853.84605722145
  quote_in_usd.volume_24h # 35664606394.86121
  quote_in_usd.percent_change_1h # -0.08049597
  quote_in_usd.percent_change_24h # -1.93058
  quote_in_usd.percent_change_7d # 23.57830268
  quote_in_usd.percent_change_30d # 15.8506565
  quote_in_usd.percent_change_60d # 24.08594399
  quote_in_usd.percent_change_90d # 59.25745607
  quote_in_usd.market_cap # 1014482918995.1969
  quote_in_usd.market_cap_dominance # 44.5955
  quote_in_usd.fully_diluted_market_cap # 1130930767201.65
  quote_in_usd.last_updated # <Date: 2021-10-08 ((2459496j,0s,0n),+0s,2299161j)>

See Listings Latest for detailed documentation.

Get Latest Quotes

Returns the latest market quote for 1 or more cryptocurrencies. Use the "convert" option to return market values in multiple fiat and cryptocurrency conversions in the same call.

  listings = client.quotes_latest(symbol: 'BTC')
  listing = listings['BTC']

  listing.id # 1
  listing.name # 'Bitcoin'
  listing.symbol # 'BTC'
  listing.slug # 'bitcoin'
  listing.is_active # 1
  listing.is_fiat # 0
  listing.num_market_pairs # 8527
  listing.date_added # <Date: 2013-04-28 ((2456411j,0s,0n),+0s,2299161j)>
  listing.tags # ['mineable', 'pow', 'sha-256', 'store-of-value', ...]
  listing.max_supply # 21000000
  listing.circulating_supply # 18837706
  listing.total_supply # 18837706
  listing.platform # nil
  listing.cmc_rank # 1
  listing.last_updated # <Date: 2021-10-08 ((2459496j,0s,0n),+0s,2299161j)>

  quote_in_usd = listing.quote['USD']

  quote_in_usd.price # 53853.84605722145
  quote_in_usd.volume_24h # 35664606394.86121
  quote_in_usd.percent_change_1h # -0.08049597
  quote_in_usd.percent_change_24h # -1.93058
  quote_in_usd.percent_change_7d # 23.57830268
  quote_in_usd.percent_change_30d # 15.8506565
  quote_in_usd.percent_change_60d # 24.08594399
  quote_in_usd.percent_change_90d # 59.25745607
  quote_in_usd.market_cap # 1014482918995.1969
  quote_in_usd.market_cap_dominance # 44.5955
  quote_in_usd.fully_diluted_market_cap # 1130930767201.65
  quote_in_usd.last_updated # <Date: 2021-10-08 ((2459496j,0s,0n),+0s,2299161j)>

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test 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/[koffeefinance]/coinmarketcap-ruby-client. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

License

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

Code of Conduct

Everyone interacting in the CoinMarketCap-Ruby-Client project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.