curl --request POST \
  --url https://api.upon-ai.com/api/chats/outbound-sms \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "workspaceId": 42,
  "agent_id": "chat_agent_01hzk4q6dr3n0d4qzpw9z6gth6",
  "from_number": "+14155550100",
  "to_number": "+14155550199",
  "metadata": {
    "campaign": "reactivation"
  },
  "uponai_dynamic_variables": {
    "customer_first_name": "Jamie"
  }
}
'

{
  "chatId": "<string>",
  "agentId": "<string>",
  "version": 123,
  "status": "<string>",
  "type": "web_chat",
  "metadata": {},
  "customAttributes": {},
  "startedAt": "2023-11-07T05:31:56Z",
  "endedAt": "2023-11-07T05:31:56Z",
  "transcript": "<string>",
  "messages": [
    {
      "content": "<string>",
      "name": "<string>",
      "tool_calls": [
        {}
      ]
    }
  ],
  "chatCost": {},
  "chatAnalysis": {},
  "collectedDynamicVariables": {},
  "uponai_dynamic_variables": {},
  "overrideDynamicVariables": {}
}