Ruby implementation of API v2
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This is the official Ruby SDK for the Currencycloud API. Additional documentation for each API endpoint can be found at [][docs].

If you have any queries or you require support, please contact our development team at Please quote your login id in any correspondence as this makes it easier for us to locate your account and give you the support you need.


You don't need this source code unless you want to modify the gem. If you just want to use the library in your application, you should run:

gem install currency_cloud

If you want to build the gem from source:

gem build currency_cloud.gemspec

Supported Ruby versions

This library aims to support and is tested against the following Ruby implementations:


require 'currency_cloud'

## Configure ##
CurrencyCloud.login_id = '<your login id>'
CurrencyCloud.api_key = '<your api key>'
CurrencyCloud.environment = :demonstration # use :production when ready

## Make API calls ##
currencies = CurrencyCloud::Reference.currencies
#[#<CurrencyCloud::Currency:0x3fcb6d03960c {"code"=>"AED", "decimal_places"=>2, "name"=>"United Arab Emirates Dirham"}>,
# #<CurrencyCloud::Currency:0x3fcb6d0390f8 {"code"=>"AUD", "decimal_places"=>2, "name"=>"Australian Dollar"}>,
# #<CurrencyCloud::Currency:0x3fcb6d038d24 {"code"=>"CAD", "decimal_places"=>2, "name"=>"Canadian Dollar"}>,
# <snip .../>
# #<CurrencyCloud::Currency:0x3fcb6d0295b8 {"code"=>"TRY", "decimal_places"=>2, "name"=>"Turkish Lira"}>,
# #<CurrencyCloud::Currency:0x3fcb6d028fc8 {"code"=>"USD", "decimal_places"=>2, "name"=>"United States Dollar"}>,
# #<CurrencyCloud::Currency:0x3fcb6d0288d4 {"code"=>"ZAR", "decimal_places"=>2, "name"=>"South African Rand"}>]

balances = CurrencyCloud::Balance.find

# @collection=
#  [#<CurrencyCloud::Balance:0x3fcb6d4093b8 {"id"=>"5a998e06-3eb7-46d6-ba58-f749864159ce", "account_id"=>"e7483671-5dc6-0132-e126-002219414986", "currency"=>"GBP", "amount"=>"20034.78", "created_at"=>"2014-12-04T09:50:35+00:00", "updated_at"=>"2015-03-23T14:33:37+00:00"}>,
#   #<CurrencyCloud::Balance:0x3fcb6d4089b8 {"id"=>"7b3796d0-35f3-4f47-8554-8020750a8f9d", "account_id"=>"e7483671-5dc6-0132-e126-002219414986", "currency"=>"EUR", "amount"=>"3012.16", "created_at"=>"2014-12-04T09:50:41+00:00", "updated_at"=>"2015-04-13T08:22:50+00:00"}>,
# @pagination=
#  #<CurrencyCloud::Pagination total_entries=5, total_pages=1, current_page=1, per_page=25, previous_page=-1, next_page=-1, order="created_at", order_asc_desc="asc">>

On Behalf Of

If you want to make calls on behalf of another user (e.g. someone who has a sub-account with you), you can execute certain commands 'on behalf of' the user's contact_id. Here is an example:

CurrencyCloud.on_behalf_of("c6ece846-6df1-461d-acaa-b42a6aa74045") do
  beneficiary = CurrencyCloud::Beneficiary.create(<params>)
  conversion = CurrencyCloud::Conversion.create(<params>)
  payment = CurrencyCloud::Payment.create(<params>)

Alternatively, you can just merge it with an existing params Hash, for example:

CurrencyCloud::Account.create(account_name: 'My Test User', on_behalf_of: "c6ece846-6df1-461d-acaa-b42a6aa74045")

Each of the above transactions will be executed in scope of the limits for that contact and linked to that contact. Note that the real user who executed the transaction will also be stored.


When an error occurs in the API, the library aims to give us much information as possible. Here is an example:

platform: Ruby 1.9.3
    login_id: non-existent-login-id
    api_key: deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef
  verb: post
  status_code: 400
  date: Wed, 29 Apr 2015 22:46:53 GMT
  request_id: 2775253392756800903
- field: api_key
  code: api_key_length_is_invalid
  message: api_key should be 64 character(s) long
    length: 64

This is split into 5 sections:

  1. Error Type: In this case BadRequestError represents an HTTP 400 error
  2. Platform: The Ruby implementation that was used e.g. 'Ruby 2.2' or 'Ruby 1.9.3 (JRuby 1.7.8)''
  3. Request: Details about the HTTP request that was made e.g. the POST parameters
  4. Response: Details about the HTTP response that was returned e.g. HTTP status code
  5. Errors: A list of errors that provide additional information

The final section contains valuable information:

  • Field: The parameter that the error is linked to
  • Code: A code representing this error
  • Message: A human readable message that explains the error
  • Params: A hash that contains dynamic parts of the error message for building custom error messages

When troubleshooting API calls with Currencycloud support, including the full error in any correspondence can be very helpful.


Test cases can be run with: bundle exec rspec. There is also a Guardfile that is useful for continuously rerunning tests while you develop.



This project uses semantic versioning. You can safely express a dependency on a major version and expect all minor and patch versions to be backwards compatible.


Copyright (c) 2016 Currencycloud. See LICENSE for details.