curl --request POST \
  --url https://combos-rfq-api.polymarket.com/v1/maker/quotes/cancel \
  --header 'Content-Type: application/json' \
  --header 'POLY_ADDRESS: <api-key>' \
  --header 'POLY_API_KEY: <api-key>' \
  --header 'POLY_PASSPHRASE: <api-key>' \
  --header 'POLY_SIGNATURE: <api-key>' \
  --header 'POLY_TIMESTAMP: <api-key>' \
  --data '
{
  "rfq_id": "rfq_<id>",
  "quote_id": "quote_<id>",
  "signer_address": "0xYourSigner",
  "maker_address": "0xYourQuoterWallet",
  "signature_type": 0
}
'

import requests

url = "https://combos-rfq-api.polymarket.com/v1/maker/quotes/cancel"

payload = {
    "rfq_id": "rfq_<id>",
    "quote_id": "quote_<id>",
    "signer_address": "0xYourSigner",
    "maker_address": "0xYourQuoterWallet",
    "signature_type": 0
}
headers = {
    "POLY_API_KEY": "<api-key>",
    "POLY_ADDRESS": "<api-key>",
    "POLY_SIGNATURE": "<api-key>",
    "POLY_PASSPHRASE": "<api-key>",
    "POLY_TIMESTAMP": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    POLY_API_KEY: '<api-key>',
    POLY_ADDRESS: '<api-key>',
    POLY_SIGNATURE: '<api-key>',
    POLY_PASSPHRASE: '<api-key>',
    POLY_TIMESTAMP: '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    rfq_id: 'rfq_<id>',
    quote_id: 'quote_<id>',
    signer_address: '0xYourSigner',
    maker_address: '0xYourQuoterWallet',
    signature_type: 0
  })
};

fetch('https://combos-rfq-api.polymarket.com/v1/maker/quotes/cancel', 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://combos-rfq-api.polymarket.com/v1/maker/quotes/cancel",
  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([
    'rfq_id' => 'rfq_<id>',
    'quote_id' => 'quote_<id>',
    'signer_address' => '0xYourSigner',
    'maker_address' => '0xYourQuoterWallet',
    'signature_type' => 0
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "POLY_ADDRESS: <api-key>",
    "POLY_API_KEY: <api-key>",
    "POLY_PASSPHRASE: <api-key>",
    "POLY_SIGNATURE: <api-key>",
    "POLY_TIMESTAMP: <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"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://combos-rfq-api.polymarket.com/v1/maker/quotes/cancel"

	payload := strings.NewReader("{\n  \"rfq_id\": \"rfq_<id>\",\n  \"quote_id\": \"quote_<id>\",\n  \"signer_address\": \"0xYourSigner\",\n  \"maker_address\": \"0xYourQuoterWallet\",\n  \"signature_type\": 0\n}")

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

	req.Header.Add("POLY_API_KEY", "<api-key>")
	req.Header.Add("POLY_ADDRESS", "<api-key>")
	req.Header.Add("POLY_SIGNATURE", "<api-key>")
	req.Header.Add("POLY_PASSPHRASE", "<api-key>")
	req.Header.Add("POLY_TIMESTAMP", "<api-key>")
	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://combos-rfq-api.polymarket.com/v1/maker/quotes/cancel")
  .header("POLY_API_KEY", "<api-key>")
  .header("POLY_ADDRESS", "<api-key>")
  .header("POLY_SIGNATURE", "<api-key>")
  .header("POLY_PASSPHRASE", "<api-key>")
  .header("POLY_TIMESTAMP", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"rfq_id\": \"rfq_<id>\",\n  \"quote_id\": \"quote_<id>\",\n  \"signer_address\": \"0xYourSigner\",\n  \"maker_address\": \"0xYourQuoterWallet\",\n  \"signature_type\": 0\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://combos-rfq-api.polymarket.com/v1/maker/quotes/cancel")

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

request = Net::HTTP::Post.new(url)
request["POLY_API_KEY"] = '<api-key>'
request["POLY_ADDRESS"] = '<api-key>'
request["POLY_SIGNATURE"] = '<api-key>'
request["POLY_PASSPHRASE"] = '<api-key>'
request["POLY_TIMESTAMP"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"rfq_id\": \"rfq_<id>\",\n  \"quote_id\": \"quote_<id>\",\n  \"signer_address\": \"0xYourSigner\",\n  \"maker_address\": \"0xYourQuoterWallet\",\n  \"signature_type\": 0\n}"

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

{
  "request": {
    "rfq_id": "<string>",
    "leg_position_ids": [
      "<string>"
    ],
    "direction": "BUY",
    "side": "YES",
    "auth_address": "<string>",
    "signer_address": "<string>",
    "maker_address": "<string>",
    "signature_type": 0,
    "requestor_public_id": "<string>",
    "condition_id": "<string>",
    "yes_position_id": "<string>",
    "no_position_id": "<string>",
    "requested_size": {
      "unit": "notional",
      "value_e6": "1000000"
    },
    "created_at": 123
  },
  "status": "CREATED",
  "competition_started_at": 123,
  "competition_ends_at": 123,
  "confirmation_started_at": 123,
  "confirmation_ends_at": 123,
  "quote_id": "<string>",
  "bundle": {
    "requested_shares_e6": "<string>",
    "blended_price_e6": "<string>",
    "allocations": [
      {
        "maker_quote_id": "<string>",
        "signer_address": "<string>",
        "maker_address": "<string>",
        "size_e6": "<string>",
        "price_e6": "<string>",
        "received_at": 123
      }
    ],
    "requested_notional_e6": "<string>"
  },
  "maker_confirmations": [
    {
      "quote_id": "<string>",
      "signer_address": "<string>",
      "maker_address": "<string>",
      "decision": "CONFIRM",
      "reason": "<string>",
      "responded_at": 123
    }
  ]
}

{
  "error": "invalid quote"
}

{
  "error": "unauthenticated"
}

{
  "error": "auth address mismatch"
}

{
  "error": "unknown rfq"
}

{
  "error": "competition window closed"
}

{
  "error": "rate limited"
}

{
  "error": "service unavailable"
}