This is a library in Ruby to easily acces the data provided by the btc-e.com API. It was originally being used on BTC-Charts.com, among other places. It is available under a BSD-style license.

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The library is available as a rubygem.

gem install btce

Populate the file btce-api-key.yml along the same lines as the example.

The only thing that 99% of the people using the library will want to do with it:

require 'btce'
ticker = Btce::Ticker.new "btc_usd"

This should return something resembling:

#<Btce::Ticker:0x00000000d5d9a0 @operation="ticker",
                                @pair="btc_usd",
                                @json={"ticker"=>{"high"=>127,
                                                  "low"=>87.301,
                                                  "avg"=>107.1505,
                                                  "vol"=>4240695.81634,
                                                  "vol_cur"=>39298.55663,
                                                  "last"=>115,
                                                  "buy"=>115,
                                                  "sell"=>114.499,
                                                  "server_time"=>1366406293}}>

You can then acces the fields with the predefined methods of the Ticker class.

This is the parent class for both the PublicAPI class and the TradeAPI class.

This is the domain of the server, defaulting to the string btc-e.com.

This is a list of the short strings for all of the currencies currently supported on btc-e.com.

This is a list of all of the supported currency pairs on btc-e.com.

This indicates how many digits past the decimal place are commonly displayed to humans for a given currency pair.

This class wraps the Trade API calls for BTCE. Parameters are passed to the method as a hashmap. More information on parameters can be found on the API docs here https://btc-e.com/api/documentation

require 'btce'
info = Btce::TradeAPI.new_from_keyfile.get_info

This should return something resembling:

{"success" => 1,
 "return" => {"funds" => {"usd" => 2.57460659,
                          "btc" => 0.00012226,
                          "ltc" => 3.00815559,
                          "nmc" => 0,
                          "rur" => 8.0116908,
                          "eur" => 0,
                          "nvc" => 0,
                          "trc" => 0,
                          "ppc" => 0,
                          "ftc" => 0,
                          "xpm" => 0},
              "rights" => {"info" => 1,
                           "trade" => 0,
                           "withdraw" => 0},
              "transaction_count" => 120,
              "open_orders" => 1,
              "server_time"=>1385947487}}

This method is used to sign the request with the user’s private API key from btc-e.com.

This is the generic method call to the Trade API. It takes a method from the Trade API, and extra information that is needed for the specific method.

Returns the user’s balance, API privileges associated with the current key, number of transactions and open orders, as well as server time

Returns the user’s trade history

Returns the user’s transaction history

Initiates a trade on the user’s account

Returns a list of active orders

Cancels the user’s order

You can only query BTC-e’s endpoint at most once a second currently. If you see something similar to the following error, that is probably what you are encountering.

Same nonce is sent for every request.

{"success"=>0, "error"=>"invalid nonce parameter; on key:1409032186, you sent:1409032186, you should send:1409032187"}