Zookeeper is Zoo's conversational CAD agent and the successor to Text-to-CAD, which it grew out of. It turns natural-language prompts into CAD files you can import into the CAD program of your choice, and is built into Zoo Design Studio rather than standing alone. It is aimed at engineers who want to skip manual modelling for straightforward mechanical parts, and at anyone prototyping a shape before committing to a full parametric model. Zoo also supports code-based CAD workflows for people who want more control than a prompt gives.