x402 v2 compared to v1 has added these business scenarios: High-frequency/continuous use (e.g., AI inference, streaming services): Sessions can be reused after a one-time purchase/verification, avoiding payment for every single request. Subscriptions/passes: Expanded from 'pay-per-use' to models like 'monthly/daily passes/unlimited use within session validity period.' API marketplace and multi-tenant revenue sharing: Each request can dynamically determine the recipient and price, supporting platform revenue sharing and multi-party splits. Simultaneous support for multi-chain + fiat payments: The same interface can accept both on-chain stablecoins and traditional payments like bank transfers/cards, reaching more users. Automatic service discovery: Services publish their own pricing and capabilities, and aggregators/agents automatically index and update—no manual directory maintenance needed.