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GET
/
threads
/
{thread_id}
/
messages
cURL
curl https://api.portkey.ai/v1/threads/thread_abc123/messages \
  -H "Content-Type: application/json" \
  -H "x-portkey-api-key: $PORTKEY_API_KEY" \
  -H "x-portkey-virtual-key: $PORTKEY_PROVIDER_VIRTUAL_KEY" \
  -H "OpenAI-Beta: assistants=v2"
from portkey_ai import Portkey

client = Portkey(
api_key = "PORTKEY_API_KEY",
virtual_key = "PROVIDER_VIRTUAL_KEY"
)

thread_messages = client.beta.threads.messages.list("thread_abc123")
print(thread_messages.data)
import Portkey from 'portkey-ai';

const client = new Portkey({
apiKey: 'PORTKEY_API_KEY',
virtualKey: 'PROVIDER_VIRTUAL_KEY'
});

async function main() {
const threadMessages = await client.beta.threads.messages.list(
"thread_abc123"
);

console.log(threadMessages.data);
}

main();
<?php

$curl = curl_init();

curl_setopt_array($curl, [
CURLOPT_URL => "https://api.portkey.ai/v1/threads/{thread_id}/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 => [
"x-portkey-api-key: <api-key>",
"x-portkey-virtual-key: <api-key>"
],
]);

$response = curl_exec($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.portkey.ai/v1/threads/{thread_id}/messages"

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

req.Header.Add("x-portkey-api-key", "<api-key>")
req.Header.Add("x-portkey-virtual-key", "<api-key>")

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.portkey.ai/v1/threads/{thread_id}/messages")
.header("x-portkey-api-key", "<api-key>")
.header("x-portkey-virtual-key", "<api-key>")
.asString();
require 'uri'
require 'net/http'

url = URI("https://api.portkey.ai/v1/threads/{thread_id}/messages")

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

request = Net::HTTP::Get.new(url)
request["x-portkey-api-key"] = '<api-key>'
request["x-portkey-virtual-key"] = '<api-key>'

response = http.request(request)
puts response.read_body
{
  "object": "list",
  "data": [
    {
      "id": "<string>",
      "object": "thread.message",
      "created_at": 123,
      "thread_id": "<string>",
      "incomplete_details": {},
      "completed_at": 123,
      "incomplete_at": 123,
      "content": [
        {
          "type": "image_file",
          "image_file": {
            "file_id": "<string>",
            "detail": "auto"
          }
        }
      ],
      "assistant_id": "<string>",
      "run_id": "<string>",
      "attachments": [
        {
          "file_id": "<string>",
          "tools": [
            {
              "type": "code_interpreter"
            }
          ]
        }
      ],
      "metadata": {}
    }
  ],
  "first_id": "msg_abc123",
  "last_id": "msg_abc123",
  "has_more": false
}

Authorizations

x-portkey-api-key
string
header
required
x-portkey-virtual-key
string
header
required

Path Parameters

thread_id
string
required

The ID of the thread the messages belong to.

Query Parameters

limit
integer
default:20

A limit on the number of objects to be returned. Limit can range between 1 and 100, and the default is 20.

order
enum<string>
default:desc

Sort order by the created_at timestamp of the objects. asc for ascending order and desc for descending order.

Available options:
asc,
desc
after
string

A cursor for use in pagination. after is an object ID that defines your place in the list. For instance, if you make a list request and receive 100 objects, ending with obj_foo, your subsequent call can include after=obj_foo in order to fetch the next page of the list.

before
string

A cursor for use in pagination. before is an object ID that defines your place in the list. For instance, if you make a list request and receive 100 objects, ending with obj_foo, your subsequent call can include before=obj_foo in order to fetch the previous page of the list.

run_id
string

Filter messages by the run ID that generated them.

Response

200 - application/json

OK

object
string
required
Example:

"list"

data
The message object · object[]
required
first_id
string
required
Example:

"msg_abc123"

last_id
string
required
Example:

"msg_abc123"

has_more
boolean
required
Example:

false

Last modified on April 2, 2026