curl --request PUT \
  --url https://api.staging.kathan.tech/assistants/{assistant_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-User-ID: <api-key>' \
  --data '
{
  "name": "<string>",
  "icon": "<string>",
  "system_instruction": "<string>",
  "guardrails": "<string>",
  "first_message": "<string>",
  "voice": {
    "voice_id": "<string>",
    "tts_provider": "<string>",
    "tts_model": "<string>",
    "language": "<string>",
    "speed": 1.05
  },
  "llm": {
    "llm_provider": "<string>",
    "model": "<string>"
  },
  "transcriber": {
    "stt_provider": "<string>",
    "stt_model": "<string>",
    "language": "<string>"
  },
  "knowledge_base_ids": [
    "<string>"
  ],
  "phone_number_id": "<string>",
  "assistant_speaks_first": true,
  "speech_settings": {},
  "long_term_memory": {
    "enabled": true,
    "search_limit": 123,
    "search_threshold": 123,
    "system_prompt": "<string>"
  },
  "short_term_memory": {
    "enabled": true,
    "search_limit": 123
  },
  "call_summary": {
    "prompt": "<string>"
  },
  "recording": {
    "enabled": true,
    "stereo": true,
    "mp3_enabled": true
  },
  "call_actions": {
    "enabled": true,
    "allow_hangup": true,
    "allow_transfer": true,
    "hangup_triggers": [
      "<string>"
    ],
    "transfer_triggers": [
      "<string>"
    ],
    "transfer_number": "<string>",
    "confirm_required": true,
    "auto_hangup_silence_seconds": 123,
    "confirm_yes": [
      "<string>"
    ],
    "confirm_no": [
      "<string>"
    ],
    "webhook_url": "<string>",
    "webhook_timeout_ms": 123
  },
  "machine_detection_timeout_seconds": 123
}
'

{
  "id": "<string>",
  "name": "<string>",
  "system_instruction": "<string>",
  "voice": {
    "voice_id": "<string>",
    "tts_provider": "cartesia",
    "tts_model": "sonic-3",
    "language": "en",
    "speed": 1
  },
  "llm": {
    "llm_provider": "openai",
    "model": "gpt-4o-mini"
  },
  "transcriber": {
    "stt_provider": "deepgram",
    "stt_model": "nova-3",
    "language": "en"
  },
  "speech_settings": {
    "style": "neutral",
    "responsiveness": "balanced",
    "interruptions": "on",
    "emotions": "natural"
  },
  "long_term_memory": {
    "enabled": false,
    "search_limit": 5,
    "search_threshold": 0.1,
    "system_prompt": "Relevant, user-specific context from previous conversations:\n\n"
  },
  "short_term_memory": {
    "enabled": false,
    "search_limit": 3
  },
  "call_summary": {
    "prompt": "<string>"
  },
  "recording": {
    "enabled": false,
    "stereo": true,
    "mp3_enabled": true
  },
  "call_actions": {
    "enabled": true,
    "allow_hangup": true,
    "allow_transfer": true,
    "hangup_triggers": [
      "<string>"
    ],
    "transfer_triggers": [
      "<string>"
    ],
    "transfer_number": "<string>",
    "transfer_mode": "cold",
    "confirm_required": true,
    "auto_hangup_silence_seconds": 123,
    "confirm_yes": [
      "<string>"
    ],
    "confirm_no": [
      "<string>"
    ],
    "webhook_url": "<string>",
    "webhook_timeout_ms": 3500
  },
  "icon": "📞",
  "guardrails": "",
  "first_message": "<string>",
  "knowledge_base_ids": [],
  "phone_number_id": "<string>",
  "assistant_speaks_first": true,
  "machine_detection_timeout_seconds": 123,
  "updated_at": "<string>"
}