AgentSync is a platform that enables AI agents to securely and autonomously make online payments. Inspired by the development of payment protocols for AI agents and the growing need for AI to interact with the digital economy, AgentSync provides a secure infrastructure for AI agents to conduct transactions, manage budgets, and access services online. This solves the problem of AI agents being unable to independently procure resources or services, thus limiting their autonomy and utility. The platform integrates with existing AI agent frameworks and blockchain-based payment systems, offering a seamless experience for developers and AI users.