The ZBrush GoZ SDK is the only ZBrush SDK there currently is. There is no dedicated C++ SDK for ZBrush at the moment. Although most GoZ bridges are realized in C++ due to the hefty throughput requirements that come with geometry data as dense as ZBrush data usually is.

Cheers,
Ferdinand

Welcome to the Maxon developers forum and its community, it is great to have you with us!

Getting Started

Before creating your next postings, we would recommend making yourself accustomed with our forum and support procedures. You did not do anything wrong, we point all new users to these rules.

• Forum Overview: Provides a broad overview of the fundamental structure and rules of this forum, such as the purpose of the different sub-forums or the fact that we will ban users who engage in hate speech or harassment.
• Support Procedures: Provides a more in detail overview of how we provide technical support for APIs here. This topic will tell you how to ask good questions and limits of our technical support.
• Forum Features: Provides an overview of the technical features of this forum, such as Markdown markup or file uploads.

It is strongly recommended to read the first two topics carefully, especially the section Support Procedures: Asking Questions.

About your First Question

Please refrain from double posting in the future, I assume that was only because you are new to the forum. I have removed your posting in the General talk forum.

You can find the ZBrush GoZ SDK in our download section:

Cheers,
Ferdinand