ToolCallsPayload

{
    "message": {
        "type": "tool-calls",
        "timestamp": "2019-08-24T14:15:22.123Z",
        "call": {
            "id": "5c4d030f-43e3-4e65-899e-8148521e660f",
            "type": "inbound_phone_call",
            "status": "ringing",
            "pipeline": "standard"
        },
        "phone_number": {
            "number": "+31850835037",
            "name": "HMS Sovereign Demo"
        },
        "customer": {
            "number": "+31612345678"
        },
        "assistant": {
            "llm_config": {
                "provider": "openai",
                "model": "gpt-5",
                "voice": "ara",
                "temperature": 0.7,
                "messages": [
                    {
                        "role": "system",
                        "content": "string"
                    }
                ],
                "tools": [
                    {}
                ]
            },
            "stt_config": {
                "provider": "deepgram",
                "model": "nova-3-general",
                "language": "multi",
                "keyterms": [
                    "yes",
                    "no",
                    "okay",
                    "Acme"
                ]
            },
            "tts_config": {
                "provider": "openai",
                "voice_id": "alloy",
                "model": "eleven_flash_v2_5",
                "language": "nl",
                "stability": 0.5,
                "similarity_boost": 0.75,
                "use_speaker_boost": true,
                "speed": 1,
                "style": 0
            },
            "first_message": "Hello, how can I help you?",
            "max_duration_seconds": 300,
            "analysis_plan": {
                "structured_data_plan": {
                    "enabled": true,
                    "schema": {
                        "type": "object",
                        "properties": {
                            "intent": {
                                "type": "string"
                            },
                            "sentiment": {
                                "type": "string",
                                "enum": [
                                    "positive",
                                    "neutral",
                                    "negative"
                                ]
                            },
                            "appointment_booked": {
                                "type": "boolean"
                            }
                        }
                    },
                    "messages": [
                        {
                            "role": "system",
                            "content": "Analyze the following call transcript according to this schema: {{schema}}"
                        }
                    ]
                },
                "min_messages_threshold": 2
            },
            "autonomous_silence_handling": false,
            "voicemail_detection": false,
            "voicemail_message": "string",
            "business_name": "Acme Corp",
            "metadata": {
                "crm_id": "12345",
                "campaign_id": "summer-2025",
                "customer_tier": "premium"
            }
        },
        "tool_call_list": [
            {
                "id": "tool_abc123def456",
                "type": "function",
                "function": {
                    "name": "lookup_contact",
                    "arguments": {
                        "query": "John Smith"
                    }
                }
            }
        ]
    }
}