Current APIs are based on Powershell and Java command sets. There is integration inside the Enterprise Manager for SMI-S. There are other integration packages for SCOM/vCenter/etc.

What type of thing are you looking for?

I am trying to create script that can interact with number of day to day storage function on the array.  So basically, I will need the Enterprise Manager functioning for my script to interact with the array, is that correct?  And it sounds like I also need to setup SMI-S server also ?  (which I believe this is on the data collector)

It depends on you :) But I would suggest using the Powershell controls to create the scripts you need. They can talk directly to the Arrays. You can also do this as bash scripts around the java command set, but I know our scripters here say the PowerShell provides more options especially when mixing in VMware commands (through the VMware provided Powershell module).