what's Router402?

Router402 is an OpenRouter-compatible AI gateway enabling true pay-per-use access to large language models such as Claude and Gemini. Users interact via smart accounts on Base, where each API call triggers a precise USDC micropayment settled automatically without subscriptions, prepaid balances, or third-party custody. The protocol utilizes the x402 standard for HTTP-integrated micropayments, Pimlico and ZeroDev for gasless ERC-4337 account abstraction, and Base Flashblocks for ~0.2-second settlement times. It incorporates Li.Fi MCP for cross-chain bridging and swapping, supporting seamless multi-chain operations while maintaining low costs and high efficiency.