The Agent economy triggers a shift of economic decision-making power from humans to machines. Traditional KYC collapses entirely due to the failure of assumptions about identity, responsibility, and authorization, and must be reconstructed around KYA to rebuild the foundation of financial regulation and payments. This economy is divided into three forms: B2C agents, M2M micro-payments, and B2B automation, all requiring full-stack infrastructure support. It is expected that within 3 to 5 years, protocols will be finalized, infrastructure will be laid out, and large-scale implementation will occur, reshaping the global financial system.