The Solana Foundation and Google Cloud have introduced Pay.sh, a new payment gateway designed to bridge Web2 and Web3 payment systems for AI agents. This initiative aims to simplify the payment process for agents by allowing them to use a unified account to access services like Google Cloud and Alibaba Cloud without needing separate registrations or API keys. Pay.sh facilitates payments through Solana stablecoin wallets, enabling seamless transactions across traditional and blockchain-based systems. Pay.sh supports both x402 and MPP payment protocols, automatically selecting the most suitable method based on service requirements. This reduces management costs and enhances service accessibility for agents. The gateway also offers features like payment splitting and a service registry for discovering API services, promoting a more integrated and efficient payment ecosystem. Despite its potential, Pay.sh faces challenges such as compliance issues and the need for improved security measures to prevent unauthorized service access.