curl --request DELETE \
  --url https://api.perpetuals.polymarket.com/v1/trade/orders-coid \
  --header 'Content-Type: application/json' \
  --data '
{
  "op": {
    "type": "cancelOrdersCOID",
    "args": [
      "550e8400e29b41d4a716446655440000"
    ]
  },
  "sig": "0x1234567890...",
  "salt": 1234567890,
  "ts": 1767225600000,
  "exp": 1767225600000
}
'

import requests

url = "https://api.perpetuals.polymarket.com/v1/trade/orders-coid"

payload = {
    "op": {
        "type": "cancelOrdersCOID",
        "args": ["550e8400e29b41d4a716446655440000"]
    },
    "sig": "0x1234567890...",
    "salt": 1234567890,
    "ts": 1767225600000,
    "exp": 1767225600000
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'DELETE',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    op: {type: 'cancelOrdersCOID', args: ['550e8400e29b41d4a716446655440000']},
    sig: '0x1234567890...',
    salt: 1234567890,
    ts: 1767225600000,
    exp: 1767225600000
  })
};

fetch('https://api.perpetuals.polymarket.com/v1/trade/orders-coid', 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.perpetuals.polymarket.com/v1/trade/orders-coid",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "DELETE",
  CURLOPT_POSTFIELDS => json_encode([
    'op' => [
        'type' => 'cancelOrdersCOID',
        'args' => [
                '550e8400e29b41d4a716446655440000'
        ]
    ],
    'sig' => '0x1234567890...',
    'salt' => 1234567890,
    'ts' => 1767225600000,
    'exp' => 1767225600000
  ]),
  CURLOPT_HTTPHEADER => [
    "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.perpetuals.polymarket.com/v1/trade/orders-coid"

	payload := strings.NewReader("{\n  \"op\": {\n    \"type\": \"cancelOrdersCOID\",\n    \"args\": [\n      \"550e8400e29b41d4a716446655440000\"\n    ]\n  },\n  \"sig\": \"0x1234567890...\",\n  \"salt\": 1234567890,\n  \"ts\": 1767225600000,\n  \"exp\": 1767225600000\n}")

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

	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.delete("https://api.perpetuals.polymarket.com/v1/trade/orders-coid")
  .header("Content-Type", "application/json")
  .body("{\n  \"op\": {\n    \"type\": \"cancelOrdersCOID\",\n    \"args\": [\n      \"550e8400e29b41d4a716446655440000\"\n    ]\n  },\n  \"sig\": \"0x1234567890...\",\n  \"salt\": 1234567890,\n  \"ts\": 1767225600000,\n  \"exp\": 1767225600000\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.perpetuals.polymarket.com/v1/trade/orders-coid")

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

request = Net::HTTP::Delete.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"op\": {\n    \"type\": \"cancelOrdersCOID\",\n    \"args\": [\n      \"550e8400e29b41d4a716446655440000\"\n    ]\n  },\n  \"sig\": \"0x1234567890...\",\n  \"salt\": 1234567890,\n  \"ts\": 1767225600000,\n  \"exp\": 1767225600000\n}"

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

[
  {
    "status": "ok",
    "oid": 1234567890,
    "ts": 1767225600000,
    "coid": "550e8400e29b41d4a716446655440000"
  }
]

{
  "status": "err",
  "error": "insufficient_margin"
}

{
  "status": "err",
  "error": "insufficient_margin"
}

{
  "status": "err",
  "error": "insufficient_margin"
}