curl --request PUT \
  --url https://api.vivix.ai/v1/characters/{character_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Studio Host v2",
  "model": "vivix-a1-stream",
  "output": {
    "aspect_ratio": "9:16",
    "resolution": "720p"
  },
  "pipeline_config": {
    "tts_config": {
      "tts_provider": "qwen-audio-3.0-tts-flash_ws",
      "tts_voice_id": "longanhuan_v3.6",
      "tts_model_id": "qwen-audio-3.0-tts-flash"
    }
  },
  "avatars": [
    {
      "avatar_id": "host_a",
      "persona": "You are Host A, a warm livestream host.",
      "visual": {
        "default_source_image_id": "front",
        "source_images": [
          {
            "source_image_id": "front",
            "url": "https://cdn.example.com/avatars/host-a-front.png",
            "description": "A woman facing the camera in a brightly lit studio, front view.",
            "media_type": "image/png"
          }
        ]
      }
    }
  ]
}
'

import requests

url = "https://api.vivix.ai/v1/characters/{character_id}"

payload = {
    "name": "Studio Host v2",
    "model": "vivix-a1-stream",
    "output": {
        "aspect_ratio": "9:16",
        "resolution": "720p"
    },
    "pipeline_config": { "tts_config": {
            "tts_provider": "qwen-audio-3.0-tts-flash_ws",
            "tts_voice_id": "longanhuan_v3.6",
            "tts_model_id": "qwen-audio-3.0-tts-flash"
        } },
    "avatars": [
        {
            "avatar_id": "host_a",
            "persona": "You are Host A, a warm livestream host.",
            "visual": {
                "default_source_image_id": "front",
                "source_images": [
                    {
                        "source_image_id": "front",
                        "url": "https://cdn.example.com/avatars/host-a-front.png",
                        "description": "A woman facing the camera in a brightly lit studio, front view.",
                        "media_type": "image/png"
                    }
                ]
            }
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: 'Studio Host v2',
    model: 'vivix-a1-stream',
    output: {aspect_ratio: '9:16', resolution: '720p'},
    pipeline_config: {
      tts_config: {
        tts_provider: 'qwen-audio-3.0-tts-flash_ws',
        tts_voice_id: 'longanhuan_v3.6',
        tts_model_id: 'qwen-audio-3.0-tts-flash'
      }
    },
    avatars: [
      {
        avatar_id: 'host_a',
        persona: 'You are Host A, a warm livestream host.',
        visual: {
          default_source_image_id: 'front',
          source_images: [
            {
              source_image_id: 'front',
              url: 'https://cdn.example.com/avatars/host-a-front.png',
              description: 'A woman facing the camera in a brightly lit studio, front view.',
              media_type: 'image/png'
            }
          ]
        }
      }
    ]
  })
};

fetch('https://api.vivix.ai/v1/characters/{character_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.vivix.ai/v1/characters/{character_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'name' => 'Studio Host v2',
    'model' => 'vivix-a1-stream',
    'output' => [
        'aspect_ratio' => '9:16',
        'resolution' => '720p'
    ],
    'pipeline_config' => [
        'tts_config' => [
                'tts_provider' => 'qwen-audio-3.0-tts-flash_ws',
                'tts_voice_id' => 'longanhuan_v3.6',
                'tts_model_id' => 'qwen-audio-3.0-tts-flash'
        ]
    ],
    'avatars' => [
        [
                'avatar_id' => 'host_a',
                'persona' => 'You are Host A, a warm livestream host.',
                'visual' => [
                                'default_source_image_id' => 'front',
                                'source_images' => [
                                                                [
                                                                                                                                'source_image_id' => 'front',
                                                                                                                                'url' => 'https://cdn.example.com/avatars/host-a-front.png',
                                                                                                                                'description' => 'A woman facing the camera in a brightly lit studio, front view.',
                                                                                                                                'media_type' => 'image/png'
                                                                ]
                                ]
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.vivix.ai/v1/characters/{character_id}"

	payload := strings.NewReader("{\n  \"name\": \"Studio Host v2\",\n  \"model\": \"vivix-a1-stream\",\n  \"output\": {\n    \"aspect_ratio\": \"9:16\",\n    \"resolution\": \"720p\"\n  },\n  \"pipeline_config\": {\n    \"tts_config\": {\n      \"tts_provider\": \"qwen-audio-3.0-tts-flash_ws\",\n      \"tts_voice_id\": \"longanhuan_v3.6\",\n      \"tts_model_id\": \"qwen-audio-3.0-tts-flash\"\n    }\n  },\n  \"avatars\": [\n    {\n      \"avatar_id\": \"host_a\",\n      \"persona\": \"You are Host A, a warm livestream host.\",\n      \"visual\": {\n        \"default_source_image_id\": \"front\",\n        \"source_images\": [\n          {\n            \"source_image_id\": \"front\",\n            \"url\": \"https://cdn.example.com/avatars/host-a-front.png\",\n            \"description\": \"A woman facing the camera in a brightly lit studio, front view.\",\n            \"media_type\": \"image/png\"\n          }\n        ]\n      }\n    }\n  ]\n}")

	req, _ := http.NewRequest("PUT", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.put("https://api.vivix.ai/v1/characters/{character_id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"Studio Host v2\",\n  \"model\": \"vivix-a1-stream\",\n  \"output\": {\n    \"aspect_ratio\": \"9:16\",\n    \"resolution\": \"720p\"\n  },\n  \"pipeline_config\": {\n    \"tts_config\": {\n      \"tts_provider\": \"qwen-audio-3.0-tts-flash_ws\",\n      \"tts_voice_id\": \"longanhuan_v3.6\",\n      \"tts_model_id\": \"qwen-audio-3.0-tts-flash\"\n    }\n  },\n  \"avatars\": [\n    {\n      \"avatar_id\": \"host_a\",\n      \"persona\": \"You are Host A, a warm livestream host.\",\n      \"visual\": {\n        \"default_source_image_id\": \"front\",\n        \"source_images\": [\n          {\n            \"source_image_id\": \"front\",\n            \"url\": \"https://cdn.example.com/avatars/host-a-front.png\",\n            \"description\": \"A woman facing the camera in a brightly lit studio, front view.\",\n            \"media_type\": \"image/png\"\n          }\n        ]\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.vivix.ai/v1/characters/{character_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"name\": \"Studio Host v2\",\n  \"model\": \"vivix-a1-stream\",\n  \"output\": {\n    \"aspect_ratio\": \"9:16\",\n    \"resolution\": \"720p\"\n  },\n  \"pipeline_config\": {\n    \"tts_config\": {\n      \"tts_provider\": \"qwen-audio-3.0-tts-flash_ws\",\n      \"tts_voice_id\": \"longanhuan_v3.6\",\n      \"tts_model_id\": \"qwen-audio-3.0-tts-flash\"\n    }\n  },\n  \"avatars\": [\n    {\n      \"avatar_id\": \"host_a\",\n      \"persona\": \"You are Host A, a warm livestream host.\",\n      \"visual\": {\n        \"default_source_image_id\": \"front\",\n        \"source_images\": [\n          {\n            \"source_image_id\": \"front\",\n            \"url\": \"https://cdn.example.com/avatars/host-a-front.png\",\n            \"description\": \"A woman facing the camera in a brightly lit studio, front view.\",\n            \"media_type\": \"image/png\"\n          }\n        ]\n      }\n    }\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "code": 0,
  "message": "success",
  "data": {
    "character_id": "chr_a1b2c3d4e5f6789012345678abcdef01",
    "name": "Studio Host v2",
    "created_at": "2026-08-19T10:00:00Z",
    "updated_at": "2026-08-19T11:00:00Z",
    "model": "vivix-a1-stream",
    "output": {
      "aspect_ratio": "9:16",
      "resolution": "720p"
    },
    "pipeline_config": {
      "tts_config": {
        "tts_provider": "qwen-audio-3.0-tts-flash_ws",
        "tts_voice_id": "longanhuan_v3.6",
        "tts_model_id": "qwen-audio-3.0-tts-flash"
      }
    },
    "avatars": [
      {
        "avatar_id": "host_a",
        "persona": "You are Host A, a warm livestream host.",
        "visual": {
          "default_source_image_id": "front",
          "source_images": [
            {
              "source_image_id": "front",
              "url": "https://cdn.example.com/avatars/host-a-front.png",
              "description": "A woman facing the camera in a brightly lit studio, front view.",
              "media_type": "image/png"
            }
          ]
        }
      }
    ]
  }
}