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

{
  "aiGatewayUsage": [
    {
      "id": "<string>",
      "eventTime": "2023-11-07T05:31:56Z",
      "requestId": "<string>",
      "accessKeyId": "<string>",
      "provider": "<string>",
      "providerDisplayName": "<string>",
      "model": "<string>",
      "modelDisplayName": "<string>",
      "attemptNumber": 123,
      "isFinalAttempt": true,
      "statusCode": 123,
      "timedOut": true,
      "isError": true,
      "isStreaming": true,
      "stopReason": "<string>",
      "inputTokens": 123,
      "outputTokens": 123,
      "cacheReadTokens": 123,
      "reasoningTokens": 123,
      "totalCost": "<string>",
      "keySource": "<string>",
      "providerKeyId": "<string>",
      "providerKeyDisplayName": "<string>"
    }
  ],
  "uri": "<string>",
  "nextPageUri": "<string>"
}