I just wanted to give kudos to the Starling Developer API team.
I used the API recently while taking part in a hackathon at work. It’s rare to find something so well documented and full featured. The ability to mock everything up (Customers, Transactions, OAuth…) in a sandbox is awesome! I also joined the Slack channel, and the devs on there were really helpful when I ran into some minor issues.
It’s already got me looking forward to the next hackathon!