curl --request GET \
  --url https://openlens.com/api/usage \
  --header 'Authorization: Bearer <token>'

{
  "totalInputTokens": 123,
  "totalOutputTokens": 123,
  "totalWebSearches": 123,
  "llmCostUsd": 123,
  "bdSpendUsd": 123,
  "totalSpendUsd": 123,
  "byModel": [
    {}
  ],
  "byCallType": [
    {}
  ]
}