curl --request GET \
  --url https://api.leaguesync.dev/matchups/{league_id}/{date_interval}/ \
  --header 'auth_token: <auth_token>'

import requests

url = "https://api.leaguesync.dev/matchups/{league_id}/{date_interval}/"

headers = {"auth_token": "<auth_token>"}

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

print(response.text)

const options = {method: 'GET', headers: {auth_token: '<auth_token>'}};

fetch('https://api.leaguesync.dev/matchups/{league_id}/{date_interval}/', 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.leaguesync.dev/matchups/{league_id}/{date_interval}/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "auth_token: <auth_token>"
  ],
]);

$response = curl_exec($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.leaguesync.dev/matchups/{league_id}/{date_interval}/"

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

	req.Header.Add("auth_token", "<auth_token>")

	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.leaguesync.dev/matchups/{league_id}/{date_interval}/")
  .header("auth_token", "<auth_token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.leaguesync.dev/matchups/{league_id}/{date_interval}/")

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

request = Net::HTTP::Get.new(url)
request["auth_token"] = '<auth_token>'

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

{
  "league_id": 598254394714169300,
  "name": "Sleeperbot Dynasty",
  "num_teams": 12,
  "sport": "football",
  "league_url": "https://sleeper.app/leagues/598254394714169344",
  "season": 2020,
  "league_avatar": "http://sleepercdn.com/avatars/efaefa889ae24046a53265a3c71b8b64"
}