API Reference

interface PaymentRequirements {
  scheme: string;           // Payment scheme (e.g., "exact")
  network: string;          // CAIP-2 network ID (e.g., "eip155:8453")
  amount: string;           // Amount in smallest units (e.g., "1000000" for 1 USDT)
  payTo: string;            // Recipient address
  asset?: string;           // Token address (optional, defaults to native USDT)
  maxTimeoutSeconds?: number;
  extra?: Record<string, unknown>;
}

interface PaymentPayload {
  t402Version: number;      // Protocol version (2)
  accepted: {
    scheme: string;
    network: string;
    amount: string;
    payTo: string;
    asset?: string;
    extra?: Record<string, unknown>;
  };
  payload: Record<string, unknown>; // Scheme-specific payload
}