There was a lot of talk at PauseOnError about using the new cURL and the JSON parsing functions in FileMaker 16 to connect to third party apps. (toddgeist showed a great example of connecting to smartystreets for address verification.)
If you're looking for another real-world example, here's an example file for scheduling GoToMeetings from within FileMaker. The example is done in DayBack Calendar, but you can copy and paste the FileMaker scripts into your own solution with little modification.
Unlocked example file and a video showing this in action are here: https://www.seedcode.com/schedule-gotomeetings-filemaker/
We hope you find it useful.