cl-neo4j is a CL client library for connecting to a neo4j graph database via the neo4j RESTful API. There is no documentation yet; in fact, until the interface stabilizes, there won't be any. I will happily take suggestions and requests; please send them to the developer mailing list.
Use Github for newest code: http://github.com/kraison/cl-neo4j/
Stable release: http://chatsubo.net/~raison/cl-neo4j_0.1.tar.gz