curl --request POST \
  --url https://api.livechatinc.com/v3.5/agent/action/list_threads \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "chat_id": "PWJ8Y4THAV"
}
'

import requests

url = "https://api.livechatinc.com/v3.5/agent/action/list_threads"

payload = { "chat_id": "PWJ8Y4THAV" }
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({chat_id: 'PWJ8Y4THAV'})
};

fetch('https://api.livechatinc.com/v3.5/agent/action/list_threads', 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.livechatinc.com/v3.5/agent/action/list_threads",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'chat_id' => 'PWJ8Y4THAV'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "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.livechatinc.com/v3.5/agent/action/list_threads"

	payload := strings.NewReader("{\n  \"chat_id\": \"PWJ8Y4THAV\"\n}")

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

	req.Header.Add("Authorization", "Basic <encoded-value>")
	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.post("https://api.livechatinc.com/v3.5/agent/action/list_threads")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"chat_id\": \"PWJ8Y4THAV\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.livechatinc.com/v3.5/agent/action/list_threads")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"chat_id\": \"PWJ8Y4THAV\"\n}"

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

{
  "threads": [
    {
      "id": "K600PKZON8",
      "created_at": "2026-06-17T07:57:41.512000Z",
      "active": true,
      "user_ids": [
        "b7eff798-f8df-4364-8059-649c35c9ed0c",
        "smith@example.com"
      ],
      "events": [
        {
          "id": "Q20N9CKRX2_1",
          "created_at": "2026-06-17T07:57:41.512000Z",
          "visibility": "all",
          "type": "message",
          "text": "Hello",
          "author_id": "smith@example.com"
        }
      ],
      "properties": {},
      "access": {
        "group_ids": [
          0
        ]
      },
      "previous_thread_id": "K600PKZOM8",
      "next_thread_id": "K600PKZOO8"
    }
  ],
  "found_threads": 42,
  "next_page_id": "MTUxNzM5ODEzMTQ5Ng==",
  "previous_page_id": "MTUxNzM5ODEzMTQ5Nw=="
}