curl -X POST 'https://app.tryhelix.ai/api/v1/sessions/chat' -H 'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0' -H 'Content-Type: application/json' -H 'Authorization: Bearer token' -d '{
  "type": "text",
  "stream": false,
  "provider": "openai",
  "model": "gpt-4.1",
  "messages": [
    {
      "role": "user",
      "content": {
        "content_type": "text",
        "parts": [
          "hi"
        ]
      }
    }
  ]
}'