nodecrawler is an oscript object and will crawl projects without any problem.As far as I know it is not available to LAPI.if you are well versed in oscript take a look at how you will write your own api in communities.opentext.com there should be an article written by Louis Routhier how you would do that.Otherwise when you encounter a project convert the heagtive dataid into positive and iterate using lapi list objects.I have posted a piece of code in communities.opentext.com where I handle projects as well it is I belive called GetNodePath.
Well, if I called the wrong number, why did you answer the phone?
James Thurber, New Yorker cartoon caption, June 5, 1937