What is it that you are trying to do? What are you trying to accomplish with an API? Many of the tools in the Engineer's Toolset write data collected to a MS Access database file from which data can be mined out for whatever reporting or collection purpose you are trying to do.
I'll mark this for the product manager to review.
I was just going to comment on this in a new thread. I think an API to create custom gadgets would be a great addition. With an API the community could get involved even further by creating new and interesting toolset gadgets.
I for one would like to integrate my workspace with my ticket server. Maybe find a new way to break things :)
cn_net, we have an SDK for Orion (http://thwack.com/forums/48/orion-family/216/orion-sdk/) but currently have no plans for extending this to Toolset.
As Jason said, what is it you are trying to accomplish?