ZATCA e-invoicing, radically simple.

# Submit a tax invoice to ZATCA
curl -X POST "https://api.zatca-api.com/api/v1/invoices" \
  -H "X-API-Key:    zk_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" \
  -H "X-API-Secret: zs_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{
    "invoice_number": "INV-1001",
    "type":           "standard",
    "currency":       "SAR",
    "seller": { "name": "ACME LLC", "vat_number": "399999999900003" },
    "buyer":  { "name": "Customer Co", "vat_number": "300000000000003" },
    "lines": [
      { "name": "Product 1", "quantity": 2, "unit_price": 100, "tax_percent": 15 }
    ]
  }'

<?php

$ch = curl_init('https://api.zatca-api.com/api/v1/invoices');
curl_setopt_array($ch, [
    CURLOPT_POST           => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'X-API-Key: '    . $apiKey,
        'X-API-Secret: ' . $secret,
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => json_encode([
        'invoice_number' => 'INV-1001',
        'type'           => 'standard',
        'lines'          => [/* ... */],
    ]),
]);

$result = json_decode(curl_exec($ch), true);
echo $result['data']['qr_code'];

const result = await fetch('https://api.zatca-api.com/api/v1/invoices', {
    method: 'POST',
    headers: {
        'X-API-Key':    apiKey,
        'X-API-Secret': secret,
        'Content-Type': 'application/json',
    },
    body: JSON.stringify({
        invoice_number: 'INV-1001',
        type:           'standard',
        lines: [
            { name: 'Product 1', quantity: 2, unit_price: 100, tax_percent: 15 }
        ],
    }),
}).then(r => r.json());

console.log(result.data.qr_code);