curl --request GET \
  --url http://127.0.0.1:3333/v3/billing/usage-stats \
  --header 'Authorization: Bearer <token>'

{
  "totalSessions": 123,
  "webSessions": 123,
  "whatsappSessions": 123,
  "aiResponses": 123,
  "totalCreditsConsumed": 123,
  "creditsUsedThisMonth": 123,
  "plan": "HOBBY",
  "creditsRecurring": 123,
  "creditsPurchased": 123,
  "totalMonthlyLimit": 123
}