curl --request GET \
  --url 'https://api.fastforex.io/usage?api_key='

{
  "usage": {
    "2021-01-24": 247,
    "2021-01-25": 312,
    "2021-01-26": 23,
    "2021-01-27": 159,
    "2021-01-28": 0,
    "2021-01-29": 45,
    "2021-01-30": 92,
    "2021-01-31": 240,
    "2021-02-01": 1204,
    "2021-02-02": 34,
    "2021-02-03": 1245,
    "2021-02-04": 4,
    "2021-02-05": 0,
    "2021-02-06": 53,
    "2021-02-07": 3245
  },
  "monthly_quota": 500000,
  "current_period": {
    "start": "2021-02-03",
    "end": "2021-03-02",
    "remaining_quota": 495453,
    "usage": 4547
  },
  "ms": 3
}