t402-io/t402

The t402 project is an open standard for internet-native payments that enables seamless HTTP-based microtransactions across all blockchain networks and fiat systems. It provides a comprehensive SDK ecosystem with implementations for 50+ networks across 10 blockchain families, allowing developers to easily add payment capabilities to their APIs and services through standardized middleware and client libraries. The protocol supports various payment schemes (exact and usage-based) and includes advanced features like gasless transactions via ERC-4337, cross-chain bridging through USDT0, and integration with AI agents through MCP servers, making it suitable for developers building web services, APIs, and applications that require flexible, chain-agnostic payment processing.