curl --request POST \
  --url https://api.callva.io/api/v1/external/call \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "destination": "<string>",
  "agent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "phone_number_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "call_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "agent_overrides": {
    "voice": "<string>",
    "name": "<string>",
    "temperature": 1,
    "greeting_exact": "<string>",
    "greeting_instruction": "<string>",
    "max_call_duration": 3615,
    "user_silence_timeout": 60,
    "call_silence_timeout": 300,
    "user_prompt_phrases": [
      "<string>"
    ],
    "max_prompt_attempts": 5,
    "agent_speaks_first": true,
    "farewell_type": "<string>",
    "farewell_text": "<string>",
    "prompt": "<string>",
    "prompt_variables": [
      "<string>"
    ],
    "custom_webhook_enabled": true,
    "custom_webhook_url": "<string>"
  },
  "preset_overrides": {
    "name": "<string>",
    "config": [
      "<string>"
    ]
  },
  "services_overrides": {
    "copilot": {
      "enabled": true
    }
  },
  "tools_overrides": [
    "<string>"
  ],
  "overrides": {
    "agent": [
      "<string>"
    ],
    "preset": [
      "<string>"
    ],
    "services": [
      "<string>"
    ],
    "tools": [
      "<string>"
    ]
  },
  "custom_fields": [
    "<string>"
  ]
}
'

import requests

url = "https://api.callva.io/api/v1/external/call"

payload = {
    "destination": "<string>",
    "agent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "phone_number_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "call_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "agent_overrides": {
        "voice": "<string>",
        "name": "<string>",
        "temperature": 1,
        "greeting_exact": "<string>",
        "greeting_instruction": "<string>",
        "max_call_duration": 3615,
        "user_silence_timeout": 60,
        "call_silence_timeout": 300,
        "user_prompt_phrases": ["<string>"],
        "max_prompt_attempts": 5,
        "agent_speaks_first": True,
        "farewell_type": "<string>",
        "farewell_text": "<string>",
        "prompt": "<string>",
        "prompt_variables": ["<string>"],
        "custom_webhook_enabled": True,
        "custom_webhook_url": "<string>"
    },
    "preset_overrides": {
        "name": "<string>",
        "config": ["<string>"]
    },
    "services_overrides": { "copilot": { "enabled": True } },
    "tools_overrides": ["<string>"],
    "overrides": {
        "agent": ["<string>"],
        "preset": ["<string>"],
        "services": ["<string>"],
        "tools": ["<string>"]
    },
    "custom_fields": ["<string>"]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    destination: '<string>',
    agent_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    phone_number_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    call_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    agent_overrides: {
      voice: '<string>',
      name: '<string>',
      temperature: 1,
      greeting_exact: '<string>',
      greeting_instruction: '<string>',
      max_call_duration: 3615,
      user_silence_timeout: 60,
      call_silence_timeout: 300,
      user_prompt_phrases: ['<string>'],
      max_prompt_attempts: 5,
      agent_speaks_first: true,
      farewell_type: '<string>',
      farewell_text: '<string>',
      prompt: '<string>',
      prompt_variables: ['<string>'],
      custom_webhook_enabled: true,
      custom_webhook_url: '<string>'
    },
    preset_overrides: {name: '<string>', config: ['<string>']},
    services_overrides: {copilot: {enabled: true}},
    tools_overrides: ['<string>'],
    overrides: {
      agent: ['<string>'],
      preset: ['<string>'],
      services: ['<string>'],
      tools: ['<string>']
    },
    custom_fields: ['<string>']
  })
};

fetch('https://api.callva.io/api/v1/external/call', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "message": "<string>",
  "data": {
    "call": {},
    "room": {},
    "sip_participant": {},
    "config": {}
  }
}

{
  "success": false,
  "message": "This API token is tenant-scoped. Please provide project_id in the request payload or query parameters, or use a project-scoped token.",
  "code": "PROJECT_REQUIRED"
}

{
  "error": "Invalid or expired token",
  "message": "The provided token is invalid or has expired"
}

{
  "success": false,
  "message": "Insufficient permission.",
  "code": "insufficient_permission"
}

{
  "success": true,
  "message": "<string>",
  "errors": {}
}

{
  "success": true,
  "message": "Failed to initiate outbound call",
  "errors": {
    "error": "livekit_error",
    "action": "terminate",
    "reason_code": "internal_error",
    "caller_message": null
  }
}

{
  "success": true,
  "message": "<string>",
  "errors": {
    "error": "<string>",
    "action": "<string>",
    "reason_code": "<string>",
    "caller_message": null
  }
}