Consultar taxas de cripto

Retorna taxas e limites ativos de saque crypto para o usuário autenticado.

Endpoint: GET /api/crypto/fees

curl -X GET 'https://api.vexuspay.com/api/crypto/fees' \
  --header 'Authorization: Bearer SEU_JWT'

{
  "withdrawal_rate": 3,
  "rate_fixed": 0,
  "min_withdrawal": 20,
  "max_withdrawal": 3000,
  "usdt_rate": 5.25
}