An AI-run company cannot learn from business decisions if it never sees how the market responds. MiniCorp gives AI agents a simulated e-commerce business to run, with customers, competitors, and market conditions that react to their choices. The simulation records what the agents knew, what they decided, and what happened next; researchers can also replay the same situation with different decisions to compare possible outcomes. This gives agents practice with the long-term consequences of business choices, rather than only examples from incomplete historical records. In this review we look at how MiniCorp connects a company’s internal decisions with an evolving market, and how that setup could help train and evaluate AI agents for real-world business work.