curl --request GET \
  --url https://app.sideshift.app/.well-known/oauth-authorization-server

import requests

url = "https://app.sideshift.app/.well-known/oauth-authorization-server"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://app.sideshift.app/.well-known/oauth-authorization-server', 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://app.sideshift.app/.well-known/oauth-authorization-server",
  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://app.sideshift.app/.well-known/oauth-authorization-server"

	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://app.sideshift.app/.well-known/oauth-authorization-server")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.sideshift.app/.well-known/oauth-authorization-server")

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

{
  "issuer": "https://app.sideshift.app",
  "authorization_endpoint": "https://app.sideshift.app/api/oauth/v1/authorize",
  "token_endpoint": "https://app.sideshift.app/api/oauth/v1/token",
  "registration_endpoint": "https://app.sideshift.app/api/oauth/v1/register",
  "revocation_endpoint": "https://app.sideshift.app/api/oauth/v1/revoke",
  "jwks_uri": "https://app.sideshift.app/api/oauth/v1/jwks",
  "scopes_supported": [
    "campaigns:read",
    "campaigns:write",
    "offline_access"
  ],
  "response_types_supported": [
    "code"
  ],
  "response_modes_supported": [
    "query"
  ],
  "grant_types_supported": [
    "authorization_code",
    "refresh_token",
    "client_credentials"
  ],
  "token_endpoint_auth_methods_supported": [
    "none",
    "client_secret_basic",
    "client_secret_post"
  ],
  "revocation_endpoint_auth_methods_supported": [
    "none",
    "client_secret_basic",
    "client_secret_post"
  ],
  "code_challenge_methods_supported": [
    "S256"
  ],
  "authorization_response_iss_parameter_supported": true
}