E-Invoice Validation API
Built for Developers

const response = await fetch(
  'https://api.invoicenavigator.eu/api/v1/validate',
  {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.INVOICE_NAV_API_KEY}`,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({ xml: invoiceXml })
  }
);

const { data } = await response.json();

if (data.isValid) {
  console.log('Valid!', data.format);
} else {
  data.errors.forEach(e =>
    console.log(`[${e.code}] ${e.message}`)
  );
}