curl --request GET \
  --url https://api.hubapi.com/conversations/v3/conversations/threads/{threadId}/messages \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.hubapi.com/conversations/v3/conversations/threads/{threadId}/messages"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.hubapi.com/conversations/v3/conversations/threads/{threadId}/messages', 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.hubapi.com/conversations/v3/conversations/threads/{threadId}/messages",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.hubapi.com/conversations/v3/conversations/threads/{threadId}/messages"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.hubapi.com/conversations/v3/conversations/threads/{threadId}/messages")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hubapi.com/conversations/v3/conversations/threads/{threadId}/messages")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "results": [
    {
      "archived": true,
      "attachments": [
        {
          "fileId": "<string>",
          "type": "FILE",
          "name": "<string>",
          "url": "<string>"
        }
      ],
      "channelAccountId": "<string>",
      "channelId": "<string>",
      "client": {
        "integrationAppId": 123
      },
      "conversationsThreadId": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "createdBy": "<string>",
      "id": "<string>",
      "recipients": [
        {
          "deliveryIdentifier": {
            "value": "<string>"
          },
          "actorId": "<string>",
          "name": "<string>",
          "recipientField": "<string>"
        }
      ],
      "senders": [
        {
          "actorId": "<string>",
          "deliveryIdentifier": {
            "value": "<string>"
          },
          "name": "<string>",
          "senderField": "<string>"
        }
      ],
      "text": "<string>",
      "type": "MESSAGE",
      "inReplyToId": "<string>",
      "richText": "<string>",
      "status": {
        "failureDetails": {
          "errorMessageTokens": {},
          "errorMessage": "<string>"
        }
      },
      "subject": "<string>",
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "paging": {
    "next": {
      "after": "<string>",
      "link": "<string>"
    }
  }
}

{
  "message": "Invalid input (details will vary based on the error)",
  "correlationId": "aeb5f871-7f07-4993-9211-075dc63e7cbf",
  "category": "VALIDATION_ERROR",
  "links": {
    "knowledge-base": "https://www.hubspot.com/products/service/knowledge-base"
  }
}