Get additional user-license state

curl 'https://api.expiryedge.com/v1/additionalLicenses' \
  -H "Authorization: Bearer $EXPIRYEDGE_API_KEY"

{
  "planName": "Starter Lite",
  "isTrial": false,
  "baseBillingPeriod": "month",
  "allowedPeriods": [
    "month",
    "year"
  ],
  "prices": {
    "month": {
      "unit_amount": 1000,
      "currency": "USD",
      "display": "10.00"
    },
    "year": {
      "unit_amount": 10000,
      "currency": "USD",
      "display": "100.00"
    }
  },
  "current": {
    "count": 2,
    "period": "month",
    "status": "active",
    "stripe_subscription_id": "sub_1QgA9bNorthwind",
    "last_invoice_at": "2026-09-15T00:00:00.000Z",
    "next_invoice_at": "2026-10-15T00:00:00.000Z",
    "cancel_at_period_end": false
  },
  "seats": {
    "active_users": 6,
    "base_user_limit": 5,
    "effective_limit": 7,
    "min_allowed_extra": 1
  }
}