To be on the safe side, it is better to start with Sandbox mode.
In Sandbox mode, you can safely explore ServiceChannel API, debug your application, or try and test our new features. The production servers always remain intact.
We have created a dedicated sandbox environment to help you develop your apps and test our API. It is called Sandbox2 or simply SB2:
Note: SB2 is a shared environment, so you may get results that differ from our examples. We refresh SB2 each weekend, so all changes you or other developers make during a week disappear after the refresh.
Follow the attached guide to setup integration within Sandbox mode.