cryptor package

R package to interface with Kraken's API and download crypto prices into R from the CoinMarketCap web api

Install the cryptor package from GitHub:

# Installing via Github
devtools::install_github("rogerjbos/cryptor")

Load necessary packages

library(cryptor)
library(data.table)

Download prices based on cryptocurrency symbol

get_cmc_price("ada")
#       symbol                timestamp      open      high       low     close     volume  market_cap    name
#    1:    ADA 2018-01-02T23:59:59.999Z 0.7246760 0.7946460 0.6978560 0.7825870  289712000 20290188351 Cardano
#    2:    ADA 2018-01-03T23:59:59.999Z 0.7796810 1.0856700 0.7785780 1.0796601  657398016 27992420977 Cardano
#    3:    ADA 2018-01-04T23:59:59.999Z 1.0940300 1.3272099 1.0376500 1.1141200  593430016 28885867828 Cardano
#    4:    ADA 2018-01-05T23:59:59.999Z 1.1711500 1.2524199 0.9035030 0.9995590  508100000 25915636700 Cardano
#    5:    ADA 2018-01-06T23:59:59.999Z 0.9970000 1.0540100 0.9291830 1.0271500  297615008 26630990503 Cardano
#   ---                                                                                                       
# 1115:    ADA 2021-01-20T23:59:59.999Z 0.3689362 0.3761975 0.3319584 0.3753939 3281600988 11679436460 Cardano
# 1116:    ADA 2021-01-21T23:59:59.999Z 0.3754491 0.3787164 0.3014011 0.3102087 3567902823  9651363869 Cardano
# 1117:    ADA 2021-01-22T23:59:59.999Z 0.3100538 0.3591592 0.2835762 0.3495765 4066222238 10876193809 Cardano
# 1118:    ADA 2021-01-23T23:59:59.999Z 0.3493316 0.3572110 0.3367005 0.3456435 2781033956 10753827794 Cardano
# 1119:    ADA 2021-01-24T23:59:59.999Z 0.3455862 0.3686394 0.3387557 0.3538810 2539663711 11010118427 Cardano

If you happen to know the CoinMarketCap id, which is there unique valued identifier, you can use it as well:

get_cmc_price(4172) # id for Terra LUNA
#      symbol                timestamp      open      high       low     close   volume market_cap  name
#   1:   LUNA 2019-07-27T23:59:59.999Z 1.3274362 1.4028976 1.2219383 1.3105663  6033446          0 Terra
#   2:   LUNA 2019-07-28T23:59:59.999Z 1.3105663 1.3685945 1.2368579 1.2729889  1643709          0 Terra
#   3:   LUNA 2019-07-29T23:59:59.999Z 1.2622703 1.3759410 1.1754435 1.2946611  3966802          0 Terra
#   4:   LUNA 2019-07-30T23:59:59.999Z 1.2944352 1.3743331 1.2664844 1.2941931  1820705          0 Terra
#   5:   LUNA 2019-07-31T23:59:59.999Z 1.2853826 1.3284078 1.2652665 1.3001020  1155167          0 Terra
#  ---                                                                                                  
# 544:   LUNA 2021-01-20T23:59:59.999Z 0.9101775 0.9387266 0.8674542 0.9046737 24589191  438600958 Terra
# 545:   LUNA 2021-01-21T23:59:59.999Z 0.9047443 0.9064415 0.7957022 0.7962349 24484681  386003269 Terra
# 546:   LUNA 2021-01-22T23:59:59.999Z 0.7957680 0.8637399 0.7711625 0.8132274 27699537  394225761 Terra
# 547:   LUNA 2021-01-23T23:59:59.999Z 0.8132695 0.9007082 0.8062333 0.9007082 22818246  436629120 Terra

Looking up CoinMarketCap id's

You can look up the id, but with over 8,000 cryptocurrencies in existance, the symbols are sometimes re-used or not unique. There is a function to return the CoinMarketCap id for a given symbol, but sometimes more than one id is returned.

get_cmc_id("luna")
# 1496 4172

Two ids show up for luna. Which one do we really want? If you get more than one id returns, then you have to search by name.

get_cmc_name("luna")
#      id symbol       name
# 1: 1496   LUNA  Luna Coin
# 2: 3019   LSTR Luna Stars

If we want Terra LUNA we actually don't want either of those, so lets search for Terra instead and see what we get.

get_cmc_name("terra")
#      id symbol                name
# 1:    4    TRC           Terracoin
# 2: 1809    TER           TerraNova
# 3: 4165 CREDIT         TerraCredit
# 4: 4172   LUNA               Terra
# 5: 5115    KRT            TerraKRW
# 6: 6370    SDT           Terra SDT
# 7: 7129    UST            TerraUSD
# 8: 8037    TVK Terra Virtua Kolect

Who knew Terra was such a popular crypto name. For Terra LUNA we want id 4172.

The mapping table with the CoinMarketCap id's will need to be updated periodically, so if you are looking for a brand new crypto, you may have to go to their website to find the necessary id, otherwise trying updating the package.

Kraken API functions

Most of the Kraken API methods are implemnented, both public and private, including ledger, trading history, balances, add order, and cancel order. For the private methods, you will need API keys which you can set up by logging into Kraken.com and choosing API under Security. Select which functions you want the API key to have access to, but for your safety, do not select deposit or withdrawal. Once you have your API keys, define then as follows.

kraken_api_key <- "keykeykeykeykeykeykeykeykeykeykeykeykeykeykeykeykeykeyke"
kraken_private_key <- "secretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecretsecr"

Then you can try the following examples. Please see Kraken's full documentation for more information on the functions and parameters.

  library(digest)
  library(caTools)
  library(cryptor)

  get_kraken("Ticker", pair = "DOTUSD")
  get_kraken("Trades", pair = "DOTUSD")
  get_kraken("Depth", pair = "DOTUSD")
  get_kraken("OHLC", pair = "DOTUSD")
  get_kraken("Spread", pair = "DOTUSD")
  get_kraken("AssetPairs", pair = "DOTUSD")
  get_kraken("Assets")
  get_kraken("Time")
  get_kraken("Balance")
  get_kraken("Ledgers", since = '2021-01-21', enddate = '2021-01-22', ofs = 1)
  get_kraken("CancelOrder", txid = 'OAMBZD-FWRTN-G63URX')
  get_kraken("CancelAll")
  get_kraken("CancelAllOrdersAfter")
  get_kraken("ClosedOrders")
  get_kraken("TradesHistory")
  get_kraken("TradeVolume", pair="DOTUSD,KEEPUSD")
  get_kraken("AddOrder", pair = 'DOTUSD', type = 'buy', ordertype = 'limit', price = 10,  volume = 1)
  get_kraken("OpenOrders")

That's all the package does for now. I will try to add more functionality later as need cases come up. I hope this helps you. Please star the github page if you find this package useful.