Blink402 is a Solana-based payment protocol that implements the HTTP-402 / x402 standard, enabling developers and creators to charge or reward users directly through Blinks. It allows pay-per-API calls, automated on-chain actions, and “reverse Blinks” that pay users for completing tasks. The project’s goal is to make real-time micro-transactions simple, transparent, and usable across tools, bots, and trading platforms.