Credits and usage this period

curl "https://oxtg7m5erd.execute-api.us-east-1.amazonaws.com/v1/usage" \
  -H "Authorization: Bearer <session-jwt>"

{
  "success": true,
  "data": {
    "plan": "free",
    "credits_remaining": 89,
    "period": "2026-07",
    "credits_used_this_period": 11,
    "calls_this_period": 12
  },
  "credits_used": 0,
  "request_id": "req_…"
}