Version 0.1.9 of the Chimps! Ruby gem is out now.

With Chimps! users can make API calls against Infochimps' web services. Chimps! also ships with a command-line tool for querying, creating, updating, uploading and downloading data on Infochimps. It provides an XML and JSON based RESTful API, and a JSON based Query API for querying particular rows in datasets.

It can be downloaded now.