Zengo is a software company based in the United States, established in 2018, that specializes in financial software solutions within the emerging Web3 landscape. With a team of 11 to 50 employees, Zengo focuses on the integration of smart contracts into blockchain technology, which has transformed the capabilities of decentralized applications (Dapps) and users. Their published content includes a white paper on Web3 transaction simulation, which addresses the complexities and challenges associated with executing transactions in a blockchain environment. The paper highlights the significance of transaction simulation as a method for users to evaluate potential outcomes of blockchain transactions before actual execution, thereby enhancing transaction intelligibility and security. It also discusses the limitations of current simulation solutions, including the potential for exploitation by attackers and discrepancies between simulated and real transaction outcomes. Zengo's work reflects a commitment to advancing understanding and functionality in the decentralized finance (DeFi) sector, particularly concerning the safe use of blockchain technology.