Coinbase Commerce Client

A client to handle cryptocurrency payments using Coinbase Commerce platform

Ruby Versions • Dependencies • Docs • Installation • Usage • Validating Webhook • Contributing

_{This gem is completely inspired by official Coinbase gem coinbase-commerce-ruby, unfortunately the oficial gem actually is deprecated, and my motivation is to continue support for this gem}

Ruby Version

Ruby [2.3 -> 3.2.2] are supported and tested.

Dependencies

The following libraries will be installed when you install the client library:

• faraday

Documentation

For more details visit Coinbase API docs.

To start using library, you'll need to create a Coinbase Commmerce account. Once you've created your Coinbase Commerce account, create an API_KEY in Settings.

On Ruby on Rails

To use this gem in Ruby on Rails, first pass your Coinbase API_KEY to an environment variable or credentials. After doing this, create a new initializer called coinbase_commerce_client.rb and insert the following code:

CoinbaseCommerceClient.configure do |config|
  config.api_key = ENV['COINBASE_API_KEY']
  # or
  config.api_key = Rails.application.credentials.coinbase[:coinbase_api_key]
end

Pure ruby example

Next create a Client object for interacting with the API:

require 'coinbase_commerce_client'
API_KEY = "API KEY"
client = CoinbaseCommerceClient::Client.new(api_key: API_KEY)

Client contains links to every Ruby Class representations of the API resources Checkout, Charge, Invoices, Event

You can call list, auto_paging, create, resolve, cancel, retrieve, modify methods from API resource classes

#charges
client.charge.list
client.charge.auto_paging
client.charge.create <payload>
charge = client.charge.retrieve <id>
charge.resolve
charge.cancel

#checkout
client.checkout.list
client.checkout.auto_paging
client.checkout.create <payload>
checkout = client.checkout.retrieve <id>
checkout.refresh
checkout.save
checkout.modify <payload>
checkout.delete

#events
client.event.list
client.event.auto_paging
event = client.event.retrieve <id>

Each API method returns an APIObject representing the JSON response from the API, all of the models support hash and JSON representation.
Also when the response data is parsed into Ruby objects, the appropriate APIObject subclasses will be used automatically. All subclasses of APIResource class support refresh method. This will update their attributes and all nested data by making a fresh GET request to the relevant API endpoint.

The client supports handling of common API errors and warnings. All errors occuring during the interaction with the API will be raised as exceptions.

Error	Status Code
APIError	*
InvalidRequestError	400
ParamRequiredError	400
ValidationError	400
AuthenticationError	401
ResourceNotFoundError	404
RateLimitExceededError	429
InternalServerError	500
ServiceUnavailableError	503

Installation

Add this line to your application's Gemfile:

gem 'coinbase_commerce_client'

Then execute:

bundle install

Or install it yourself as:

gem install coinbase_commerce_client

Usage

• Checkouts
• Charges
• Events

require 'coinbase_commerce_client'
client = CoinbaseCommerceClient::Client.new(api_key: 'your_api_key')

Checkouts

Checkouts API docs

Retrieve

checkout = client.checkout.retrieve <checkout_id>

Create

checkout_info = {
    "name": "The Sovereign Individual",
    "description": "Mastering the Transition to the Information Age",
    "pricing_type": "fixed_price",
    "local_price": {
        "amount": "1.00",
        "currency": "USD"
    },
    "requested_info": ["name", "email"]
}
checkout = client.checkout.create(checkout_info)
# or
checkout = client.checkout.create(:name=>'The Sovereign Individual',
                                  :description=>'Mastering the Transition to the Information Age',
                                  :pricing_type=>'fixed_price',
                                  :local_price=>{
                                          "amount": "100.00",
                                          "currency": "USD"
                                          },
                                  :requested_info=>["name", "email"])                            

Update

checkout = client.checkout.retrieve <checkout_id>
checkout.name = 'new name'
checkout.save
# or
client.checkout.modify(<checkout_id>, "local_price": {
    "amount": "10000.00",
    "currency": "USD"
})

Delete

checkout.delete

List

checkouts = client.checkout.list

Paging list iterations

client.checkout.auto_paging  do |ch|
  puts ch.id
end

Charges

Charges API docs

Retrieve

charge = client.charge.retrieve <charge_id>

Create

charge_info = {
    "name": "The Sovereign Individual",
    "description": "Mastering the Transition to the Information Age",
    "pricing_type": "fixed_price",
    "local_price": {
        "amount": "1.00",
        "currency": "USD"
    },
    "requested_info": ["name", "email"]
}
charge = client.charge.create(charge_info)
# or
charge = client.charge.create(:name=>'The Sovereign Individual',
                              :description=>'Mastering the Transition to the Information Age',
                              :pricing_type=>'fixed_price',
                              :local_price=>{
                                  "amount": "100.00",
                                  "currency": "USD"
                              })

List

charges_list = client.charge.list

Paging list iterations

client.charge.auto_paging do |charge|
  puts charge.id
end

Resolve

charge = client.charge.retrieve <charge_id>
charge.resolve

Cancel

charge = client.charge.retrieve <charge_id>
charge.cancel

Events

Events API Docs

Retrieve

event = client.event.retrieve <event_id>

List

events = client.event.list

Paging list iterations

client.event.auto_paging do |event|
  puts event.id
end

Validating webhook signatures

You should verify the webhook signatures using our library. To perform the verification you'll need to provide the event data, a webhook signature from the request header, and the endpoint’s secret. In case of an invalid request signature or request payload, you will receive an appropriate error message.

WEBHOOK_SECRET = 'your_webhook_secret'
# Using Sinatra
post '/webhooks' do
  request_payload = request.body.read
  sig_header = request.env['HTTP_X_CC_WEBHOOK_SIGNATURE']
  begin
    event = CoinbaseCommerceClient::Webhook.construct_event(request_payload, sig_header, WEBHOOK_SECRET)
    # event handle
    puts "Received event id=#{event.id}, type=#{event.type}"
    status 200
    # errors handle
  rescue JSON::ParserError => e
    puts "json parse error"
    status 400
    return
  rescue CoinbaseCommerceClient::Errors::SignatureVerificationError => e
    puts "signature verification error"
    status 400
    return
  rescue CoinbaseCommerceClient::Errors::WebhookInvalidPayload => e
    puts "missing request or headers data"
    status 400
    return
  end
end

Testing and Contributing

Any and all contributions are welcome! The process is simple: fork this repo, make your changes, add tests, run the test suite, and submit a pull request. Tests are run via rspec. To run the tests, clone the repository and then:

# Install the requirements
gem install coinbase_commerce_client
rspec spec

# or via Bundle
bundle install
bundle exec rspec spec