curl --request GET \
  --url https://external-api.kalshi.com/trade-api/v2/multivariate_event_collections

import requests

url = "https://external-api.kalshi.com/trade-api/v2/multivariate_event_collections"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://external-api.kalshi.com/trade-api/v2/multivariate_event_collections', 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://external-api.kalshi.com/trade-api/v2/multivariate_event_collections",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($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://external-api.kalshi.com/trade-api/v2/multivariate_event_collections"

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

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://external-api.kalshi.com/trade-api/v2/multivariate_event_collections")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://external-api.kalshi.com/trade-api/v2/multivariate_event_collections")

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

request = Net::HTTP::Get.new(url)

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

{
  "multivariate_contracts": [
    {
      "collection_ticker": "<string>",
      "series_ticker": "<string>",
      "title": "<string>",
      "description": "<string>",
      "open_date": "2023-11-07T05:31:56Z",
      "close_date": "2023-11-07T05:31:56Z",
      "associated_events": [
        {
          "ticker": "<string>",
          "is_yes_only": true,
          "active_quoters": [
            "<string>"
          ],
          "size_max": 123,
          "size_min": 123
        }
      ],
      "associated_event_tickers": [
        "<string>"
      ],
      "is_ordered": true,
      "is_single_market_per_event": true,
      "is_all_yes": true,
      "size_min": 123,
      "size_max": 123,
      "functional_description": "<string>"
    }
  ],
  "cursor": "<string>"
}

{
  "code": "<string>",
  "message": "<string>",
  "details": "<string>",
  "service": "<string>"
}

{
  "code": "<string>",
  "message": "<string>",
  "details": "<string>",
  "service": "<string>"
}