curl --request PUT \
  --url https://api.anam.ai/v1/personas/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "systemPrompt": "You are a helpful assistant who speaks concisely."
}
'

import requests

url = "https://api.anam.ai/v1/personas/{id}"

payload = { "systemPrompt": "You are a helpful assistant who speaks concisely." }
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({systemPrompt: 'You are a helpful assistant who speaks concisely.'})
};

fetch('https://api.anam.ai/v1/personas/{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.anam.ai/v1/personas/{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([
    'systemPrompt' => 'You are a helpful assistant who speaks concisely.'
  ]),
  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.anam.ai/v1/personas/{id}"

	payload := strings.NewReader("{\n  \"systemPrompt\": \"You are a helpful assistant who speaks concisely.\"\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.anam.ai/v1/personas/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"systemPrompt\": \"You are a helpful assistant who speaks concisely.\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.anam.ai/v1/personas/{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  \"systemPrompt\": \"You are a helpful assistant who speaks concisely.\"\n}"

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

{
  "id": "00000000-0000-0000-0000-000000000000",
  "name": "Cara",
  "description": "A helpful assistant",
  "personaPreset": "",
  "avatar": {
    "id": "071b0286-4cce-4808-bee2-e642f1062de3",
    "displayName": "Liv",
    "variantName": "home",
    "imageUrl": "https://lab.anam.ai/persona_thumbnails/liv_home.png",
    "videoUrl": "https://example.com/avatar-preview.mp4?X-Amz-Signature=...",
    "createdAt": "2026-04-20T10:00:00.000Z",
    "updatedAt": "2026-04-20T10:00:00.000Z",
    "createdByOrganizationId": null,
    "availableVersions": [
      "cara-3"
    ],
    "activeVersion": "cara-3",
    "description": "A friendly professional in a modern office setting, warm expression, business casual attire.",
    "displayTags": [
      "professional",
      "friendly",
      "office"
    ],
    "renderStyle": "realistic"
  },
  "avatarModel": "cara-3",
  "voice": {
    "id": "de23e340-1416-4dd8-977d-065a7ca11697",
    "displayName": "Lucy - Fresh & Casual",
    "provider": "ELEVENLABS",
    "providerVoiceId": "lcMyyd2HUfFzxdCaC4Ta",
    "providerModelId": "eleven_flash_v2_5",
    "sampleUrl": "https://newgxnc1uqs0jnqm.public.blob.vercel-storage.com/voice-samples/de23e340-1416-4dd8-977d-065a7ca11697/1760617899390.mp3",
    "previewSampleUrl": "https://newgxnc1uqs0jnqm.public.blob.vercel-storage.com/voice-samples/de23e340-1416-4dd8-977d-065a7ca11697/1760617899390.mp3",
    "gender": "FEMALE",
    "country": "GB",
    "description": "Energetic and youthful British voice, perfect for narrations and conversational agents.",
    "displayTags": [
      "fast"
    ],
    "isZdr": true,
    "createdByOrganizationId": null,
    "createdAt": "2026-04-20T10:00:00.000Z",
    "updatedAt": "2026-04-20T10:00:00.000Z"
  },
  "voiceSpeed": 1,
  "llmId": "a7cf662c-2ace-4de1-a21e-ef0fbf144bb7",
  "brain": {
    "personality": null,
    "systemPrompt": "You are a helpful assistant."
  },
  "tools": [],
  "knowledge": [],
  "shareLinks": null,
  "primaryShareLink": null,
  "enableAudioPassthrough": false,
  "skipGreeting": false,
  "zeroDataRetention": false,
  "voiceDetectionOptions": null,
  "voiceGenerationOptions": null,
  "widgetConfig": {},
  "createdAt": "2026-04-20T10:00:00.000Z",
  "updatedAt": "2026-04-20T10:00:00.000Z"
}