AI agents, capable of autonomously achieving goals with minimal human intervention, are revolutionizing business operations by performing complex tasks across society. These "AI teammates" are becoming integral to daily functions, necessitating robust governance to manage risks such as data misinterpretation and security breaches. Platforms like Cube D3 offer solutions by providing a universal semantic layer that facilitates the development and deployment of AI data co-workers. Key features include "Agent Spaces" for managing agent groups and roles, scoping operations to specific data views for enhanced security, and implementing rules to guide agent behavior. D3 also emphasizes transparency and accountability through features like traceable actions, logging, and iterative refinement, ensuring AI-generated outputs are trustworthy and consistent. By grounding operations in a universal semantic layer, D3 ensures consistent definitions and reduces ambiguity, thus fostering trust and driving scalable outcomes. This comprehensive approach allows enterprises to efficiently manage, monitor, and govern AI teammates, unlocking faster and more accurate insights.