HTTP 402 Payment Required

import { MNNR } from '@mnnr/sdk';

const client = new MNNR({ apiKey: 'your-api-key' });

// The SDK handles x402 automatically
async function fetchPremiumData() {
  try {
    // SDK automatically handles 402 responses
    const response = await client.x402.request({
      url: 'https://api.example.com/premium-data',
      method: 'GET',
      // Optional: set spending limits
      maxPayment: 1.00,  // Max $1.00 per request
    });
    
    return response.data;
  } catch (error) {
    if (error.code === 'PAYMENT_LIMIT_EXCEEDED') {
      console.log('Request would exceed payment limit');
    }
    throw error;
  }
}

// Or handle manually
async function manualX402Flow() {
  const response = await fetch('https://api.example.com/premium-data');
  
  if (response.status === 402) {
    const paymentInfo = {
      amount: response.headers.get('X-402-Amount'),
      receiver: response.headers.get('X-402-Receiver'),
      network: response.headers.get('X-402-Network'),
    };
    
    // Make payment through MNNR
    const payment = await client.payments.create({
      amount: paymentInfo.amount,
      to: paymentInfo.receiver,
      network: paymentInfo.network,
    });
    
    // Retry with payment proof
    return fetch('https://api.example.com/premium-data', {
      headers: {
        'X-402-Payment-Proof': JSON.stringify({
          txHash: payment.txHash,
          network: payment.network,
          token: payment.token,
          amount: payment.amount,
        }),
      },
    });
  }
  
  return response;
}