Hey all; Jarl's e-mail is apparently having some issues, so he asked me to forward these urls on to everyone. http://www.cs.umbc.edu/kqml KQML... Knowledge Query Modeling Language. I've read a part of their API, looks very good! Also found an idl for it: http://www.irit.fr/~Dominique.Benech/cobalt/cobalt.idl