test-payment-header.js

// Test what payment header format the x402 client expects
// Run this in Node.js to test different formats

const testFormats = [
  // Current server format (what we're sending)
  {
    name: "Current Server Format",
    data: {
      "x402Version": 2,
      "error": "Payment required",
      "resource": {
        "url": "http://localhost:3001/search?q=test",
        "description": "StellarSearch: pay-per-query web search for AI agents",
        "mimeType": "application/json"
      },
      "accepts": [{
        "scheme": "exact",
        "network": "stellar:testnet",
        "amount": "10000",
        "asset": "CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA",
        "payTo": "GDXA3V2LI3VN3GBH5BMOF25QSFJV7S7ZOWMHHQMJRPP4BVORDDRTIIMU",
        "maxTimeoutSeconds": 300,
        "extra": {
          "areFeesSponsored": true
        }
      }]
    }
  },
  
  // Simplified format (what client might expect)
  {
    name: "Simplified Format",
    data: {
      "accepts": [{
        "scheme": "exact",
        "network": "stellar:testnet",
        "amount": "10000",
        "payTo": "GDXA3V2LI3VN3GBH5BMOF25QSFJV7S7ZOWMHHQMJRPP4BVORDDRTIIMU"
      }]
    }
  },
  
  // V1 format
  {
    name: "V1 Format",
    data: {
      "x402Version": 1,
      "error": "Payment required",
      "accepts": [{
        "scheme": "exact",
        "network": "stellar:testnet",
        "maxAmountRequired": "10000",
        "resource": "http://localhost:3001/search?q=test",
        "description": "StellarSearch: pay-per-query web search for AI agents",
        "mimeType": "application/json",
        "outputSchema": {},
        "payTo": "GDXA3V2LI3VN3GBH5BMOF25QSFJV7S7ZOWMHHQMJRPP4BVORDDRTIIMU",
        "maxTimeoutSeconds": 300,
        "asset": "CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA",
        "extra": {}
      }]
    }
  }
];

console.log('Testing different payment header formats:\n');

testFormats.forEach(format => {
  console.log(`${format.name}:`);
  const encoded = Buffer.from(JSON.stringify(format.data)).toString('base64');
  console.log(`Base64: ${encoded.substring(0, 50)}...`);
  console.log(`JSON: ${JSON.stringify(format.data, null, 2)}\n`);
});

console.log('To test with curl:');
console.log('curl -H "PAYMENT-REQUIRED: <base64_here>" http://localhost:3001/search?q=test');