If you are looking for an easier setup with a rest api you might want to try https://vatifytax.app.

Simple Example:

# Validate VAT (cURL)
curl -s https://api.vatifytax.app/v1/validate-vat \
  -H "Authorization: Bearer API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"vat_number":"DE811907980"}' | jq