Created: 2008-03-31 04:26
Updated: 2017-07-27 04:48
License: mit


TrustCommerce is a payment gateway providing credit card processing and recurring / subscription billing services.

This library provides a simple interface to create, edit, delete, and query subscriptions using TrustCommerce.


TrustCommerce's recurring / subscription billing solution is implemented through a service called Citadel. A Citadel-enabled account is required to use the subscription-based features implemented by this library.

Citadel Basics

  • Citadel stores customer profiles which can include credit card information and billing frequency.
  • Citadel will automatically bill customers on their respective schedules.
  • Citadel identifies each customer by a Billing ID (six-character alphanumeric string).
  • A customer's profile, credit card, and billing frequency can be modified using the Billing ID.


The simple way:

$ sudo gem install trustcommerce

Directly from repository:

$ svn co svn:// trustcommerce

It is highly recommended to download and install the TCLink ruby extension. This extension provides failover capability and enhanced security features. If this library is not installed, standard POST over SSL will be used.


When you signup for a TrustCommerce account you are issued a custid and a password. These are your credentials when using the TrustCommerce API.

TrustCommerce.custid   = '123456'
TrustCommerce.password = 'topsecret'

# optional - sets Vault password for use in query() calls
TrustCommerce.vault_password = 'supersecure'

The password that TrustCommerce issues never changes or expires when used through the TCLink extension. However if you choose to use SSL over HTTP instead (the fallback option if the TCLink library is not installed), be aware that you need to set the password to your Vault password. Likewise, if your application uses the query() method you must set the vault_password. The reason is that TrustCommerce currently routes these query() calls through the vault and therefore your password must be set accordingly. To make matters more complicated, TrustCommerce currently forces you to change the Vault password every 90 days.


Creating a subscription

# Bill Jennifer $12.00 monthly
response = TrustCommerce::Subscription.create(
  :cc     => '4111111111111111',
  :exp    => '0412',
  :name   => 'Jennifer Smith',
  :amount => 1200,
  :cycle  => '1m'

if response['status'] == 'approved'
  puts "Subscription created with Billing ID: #{response['billingid']}"
  puts "An error occurred: #{response['error']}"

Update a subscription

# Update subscription to use new credit card
response = TrustCommerce::Subscription.update(
  :billingid => 'ABC123',
  :cc        => '5411111111111115', 
  :exp       => '0412'

if response['status'] == 'accepted'
  puts 'Subscription updated.'
  puts "An error occurred: #{response['error']}"

Delete a subscription

# Delete subscription
response = TrustCommerce::Subscription.delete(
  :billingid => 'ABC123'

if response['status'] == 'accepted'
  puts 'Subscription removed from active use.'
  puts 'An error occurred.'

Query a subscription

# Get all sale transactions for a subscription in CSV format
response = TrustCommerce::Subscription.query(
  :querytype => 'transaction',
  :action    => 'sale',
  :billingid => 'ABC123'

Process a one-time charge

# Process one-time sale against existing subscription
response = TrustCommerce::Subscription.charge(
  :billingid => 'ABC123',
  :amount    => 1995

Credit a transaction

# Process one-time credit against existing transaction
response =
  :transid => '001-0000111101',
  :amount  => 1995

Running the tests

The following special environment variables must be set up prior to running tests:

$ export TC_USERNAME=123456
$ export TC_PASSWORD=password
$ export TC_VAULT_PASSWORD=password

Run tests via rake:

$ rake test

Run tests via ruby:

$ ruby test/trustcommerce_test.rb
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