In 1994, the HTTP specification included a status code 402 for “Payment Required,” anticipating a future where money flows like data. Fast forward to 2025, and the x402 protocol has transformed that vision into reality. It allows API calls to include payments directly, eliminating checkout flows and human involvement. Since its launch, x402 has processed over 100 million payments. The protocol supports high-frequency workloads and has evolved to include multi-chain capabilities, addressing the need for seamless transactions in a world increasingly dominated by AI agents. Tempo, a blockchain designed specifically for payments, complements x402 by providing a settlement infrastructure for these transactions. Built by Stripe and Paradigm, Tempo raised $500 million in late 2025, partnering with major players like OpenAI and Visa. As web traffic shifts from human interaction to API calls, traditional web economics collapse. Instead of ad-driven models, the focus shifts to data quality and API access. AI agents use APIs without engaging with ads, meaning monetization must come directly from data requests. OnChainDB is a response to this evolving landscape, integrating payments into the database layer itself. Unlike traditional databases that charge for storage, OnChainDB allows developers to earn revenue each time their data is accessed. This model promotes sharing over hoarding, as data creators can monetize their contributions directly. As costs for AI agent tasks become more manageable through direct micropayments, the old advertising-driven economic model falters, giving way to a more efficient system where machines transact with each other.