curl --request DELETE \
  --url https://api.parlayx.com/v1/kalshi/orders/{orderId} \
  --header 'PX-Content-Sha256: <px-content-sha256>' \
  --header 'PX-Key-Id: <px-key-id>' \
  --header 'PX-Signature: <px-signature>' \
  --header 'PX-Timestamp: <px-timestamp>'

import requests

url = "https://api.parlayx.com/v1/kalshi/orders/{orderId}"

headers = {
    "PX-Key-Id": "<px-key-id>",
    "PX-Timestamp": "<px-timestamp>",
    "PX-Signature": "<px-signature>",
    "PX-Content-Sha256": "<px-content-sha256>"
}

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

print(response.text)

const options = {
  method: 'DELETE',
  headers: {
    'PX-Key-Id': '<px-key-id>',
    'PX-Timestamp': '<px-timestamp>',
    'PX-Signature': '<px-signature>',
    'PX-Content-Sha256': '<px-content-sha256>'
  }
};

fetch('https://api.parlayx.com/v1/kalshi/orders/{orderId}', 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.parlayx.com/v1/kalshi/orders/{orderId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "DELETE",
  CURLOPT_HTTPHEADER => [
    "PX-Content-Sha256: <px-content-sha256>",
    "PX-Key-Id: <px-key-id>",
    "PX-Signature: <px-signature>",
    "PX-Timestamp: <px-timestamp>"
  ],
]);

$response = curl_exec($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.parlayx.com/v1/kalshi/orders/{orderId}"

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

	req.Header.Add("PX-Key-Id", "<px-key-id>")
	req.Header.Add("PX-Timestamp", "<px-timestamp>")
	req.Header.Add("PX-Signature", "<px-signature>")
	req.Header.Add("PX-Content-Sha256", "<px-content-sha256>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.delete("https://api.parlayx.com/v1/kalshi/orders/{orderId}")
  .header("PX-Key-Id", "<px-key-id>")
  .header("PX-Timestamp", "<px-timestamp>")
  .header("PX-Signature", "<px-signature>")
  .header("PX-Content-Sha256", "<px-content-sha256>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.parlayx.com/v1/kalshi/orders/{orderId}")

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

request = Net::HTTP::Delete.new(url)
request["PX-Key-Id"] = '<px-key-id>'
request["PX-Timestamp"] = '<px-timestamp>'
request["PX-Signature"] = '<px-signature>'
request["PX-Content-Sha256"] = '<px-content-sha256>'

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

{
  "orderId": "3f8b2c9a-2d18-4f7e-9c2a-1b6e1f0c8a4d",
  "ticker": "KXPRES-2028",
  "side": "YES",
  "action": "BUY",
  "type": "LIMIT",
  "count": 10,
  "priceCents": 38,
  "status": "OPEN",
  "venueOrderId": "b4d9e1f2-3a6c-4d8e-9f1a-2b3c4d5e6f70",
  "createdAt": "2026-07-26T12:00:00.000Z",
  "updatedAt": "2026-07-26T12:05:00.000Z",
  "filledCount": 4,
  "averagePriceCents": 37,
  "feesCents": 6,
  "feesUsd": "0.063000",
  "closedAt": "2026-07-26T12:10:00.000Z"
}

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "<string>",
    "orderId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  }
}

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "<string>",
    "orderId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  }
}

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "<string>",
    "orderId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  }
}