Houdini Swap is a service that utilizes Monero as a tunnel between exchanges to anonymize blockchain transactions. By leveraging Monero, Houdini Swap effectively severs any on-chain link between the sender and receiver. Our primary goal is to address the fundamental gap between public blockchains and individuals' right to privacy. As blockchain becomes increasingly integrated into the traditional financial ecosystem, the notion of paying for services with cryptocurrency and exposing one's on-chain wallet history to the public is deemed unacceptable. Privacy is paramount for security.