Zoo (Zookeeper)

Zookeeper is an ML-powered agent in Zoo Design Studio that uses LLMs to generate and modify CAD models. It works in KCL, a readable CAD language, on top of a custom 3D kernel, and produces real parametric models with a full feature tree and editable parameters, built up step by step through incremental natural language commands rather than one-shot descriptions.

Conversation is a first-class interface: the agent can scope work before geometry exists, guide a modification step by step, review and approve designs, reuse existing designs, generate summaries of changes, and create design variants, while keeping its own working documents in the project as Markdown files. It is aware of what the user has selected, so pointing at a face, edge, feature, or part gives it precise context, and it can pull in external references such as standards and documentation.

The agent also reads model-derived information directly from the CAD model, including center of mass, mass, volume, and surface area, so evaluating a model and deciding what to change stays in the same conversational loop. The same tools are exposed through Zoo MCP, which lets an AI tool such as Claude or Codex call Zoo modeling, file, and CAD utilities, starting with uvx zoo-mcp and a Zoo API token. Zookeeper runs in Auto, Thoughtful, and Standard modes, with mode availability depending on the plan; free users can use Auto mode.