[galaxy-dev] Is there a way to determine if a tool was run from the UI or from a Workflow step?

Hi, I would like to allow interactive use of the Galaxy UI to be run in a different "destination" from a tool that is run from a workflow... I am looking into setting up the dynamic running method in jobs_conf.xml and a special dynamic function I am defining, but not too sure how I can determine (if this is even possible) if a tool is run as part of a Workflow step or if it was run interactively.... Any pointers? Thanks