POST https://api.ndpay.online/api/create_invoice

{
  "shop_id": "your_shop",
  "order_id": "order_12345",
  "amount": 500.00,
  "callback_url": "https://your-server.com/webhook"
}

{
  "invoice_id": "inv_N58n89YpnI",
  "deep_link": "https://t.me/Xnodepay_bot?start=inv_N58n89YpnI",
  "card": "4441 1111 4029 9938",
  "bank": "Монобанк",
  "expires_at": "2026-09-25T12:30:00"
}