curl --request GET \
  --url https://api.getoutbox.ai/agent/transcript/list/{agent_id} \
  --header 'Authorization: <api-key>' \
  --header 'X-User-Timezone: <x-user-timezone>'

{
  "results": [
    {
      "id": "<string>",
      "agent_name": "<string>",
      "agent_id": "<string>",
      "user_name": "<string>",
      "timestamp": "<string>",
      "status": "<string>",
      "opened": true,
      "call_length": "<string>",
      "message_count": 123
    }
  ],
  "queue_count": 123,
  "total": 123
}