curl -X POST 'https://api.goatpay.com.br/v1/coupons/create' \
  -H 'X-API-Key: gp_live_SUA_CHAVE' \
  -H 'Content-Type: application/json' \
  -d '{
    "code": "VERAO10",
    "discountType": "PERCENT",
    "discountValue": 10,
    "maxUses": 100,
    "expiresAt": "2026-12-31T23:59:59.000Z",
    "paymentLinkIds": ["clx_link"]
  }'

{
  "success": true,
  "message": "Cupom criado",
  "data": {
    "id": "clx_coupon",
    "code": "VERAO10",
    "discountType": "PERCENT",
    "discountValue": 10,
    "maxUses": 100,
    "uses": 0,
    "status": "ACTIVE",
    "productIds": [],
    "paymentLinkIds": ["clx_link"]
  },
  "requestId": "req_abc"
}