Do you provide development, or test access to the API?
Yes, it is possible to have access to the API as a ‘test’ or ‘development’ account. All you need to do is choose the ‘test’ API key type, when creating an API key. All calls to the API using this key will be run in ‘test mode’. You can also tell if you are running in test mode as there will be a ‘test’ parameter, returned with every call you make, which will equal ‘true’.
Please bear in mind that there are differences between running the API in ‘test’ or ‘live’ mode. The differences are explained here.