At Cisco LIve 2015 in San Diego I gave a brief presentation on how you can use APIs to create things in Cisco ACI as well as run every day tasks. From Day 0 to Day2 tasks can all be automated and orchestrated using REST APIs. In this presentation I basically show a demo of creating a fabric using POSTMAN to make REST API calls into the APIC. It's pretty cool.
Check out the demo here: