GET /api/v1/usage returns the current UGX wallet balance, outbound rate, concurrency cap, and daily limit.
GET /api/v1/usage/calls?page=1&page_size=50 returns wallet usage transactions for reconciliation. Web demo calls are not included as billable outbound usage.
Outbound campaign and direct-call creation requires at least the current minimum balance. Calls that are not answered are normalized and their usage debit is reversed by the server’s canonical finalizer.