TM1 REST API is a great enhancement for TM1.
You can develop lots for own applications using this API. And most beautiful thing is they can be cross TM1 servers! The current TM1 interfaces(Perspectives and Architecture), I have to say, are ugly and difficult to use, especially when you want to exchange data between two servers.
I know tm1runti command and already developed TI processes to transfer data between servers.
TM1 REST API provides a new way to communicate with TM1 server.
I plan to use this to develop a new tool for managing chores, migrating objects, etc.
Looking forward to hoping IBM to make this API stronger to replace the original out-of-date API.
https://www.ibm.com/developerworks/community/groups/community/TM1SDK