Stablecoins like USDC, USDT, and USDS are becoming essential in the AI-driven business landscape, overshadowing AI-related cryptocurrencies. As AI agents like Felix and Medvi operate autonomously, generating significant revenue with minimal human intervention, stablecoins provide the necessary financial infrastructure. These agents, unable to open traditional bank accounts, rely on stablecoins for transactions, highlighting their critical role in the evolving digital economy. Despite the hype around AI blockchain projects, the market capitalization of AI-related tokens has plummeted, with CoinGecko's AI Agent Index dropping by 75% over the past year. In contrast, stablecoins have seen massive growth, with USDC alone projected to reach $18.3 trillion in on-chain settlement volume by 2025. This shift underscores the importance of stablecoins as the backbone of AI agent operations, while public blockchains serve as interchangeable tools for transaction processing.