Oanda API sample calls Accounts, Products, and Streamer - quick sketchy sample

OandaApiCalls.cs

using System;
using System.IO;
using System.Net;
using System.Text.Json;
using System.Threading;

namespace OandaStreamingConsole
{
    class Program
    {
        static string token = "Bearer ";
        static string oanda_account_id = "";

        static void Main(string[] args)
        {

            token = $"{token}{Environment.GetEnvironmentVariable("oanda_token")}";
            oanda_account_id = Environment.GetEnvironmentVariable("oanda_account_id");
            GetAccounts();
            Thread.Sleep(2000);
            GetProducts();
            Thread.Sleep(2000);
            PriceStreamer();
        }

        static void PriceStreamer()
        {
            using WebClient client = new();
            client.Credentials = CredentialCache.DefaultNetworkCredentials;
            client.Headers.Add(HttpRequestHeader.Authorization, token);
            client.OpenReadCompleted += (_, eventArgs) =>
            {
                using StreamReader reader = new(eventArgs.Result);
                
                try
                {
                    while (!reader.EndOfStream)
                    {
                        Console.Out.WriteLine(FormatJson(reader.ReadLine()));
                    }
                }
                catch (IOException e)
                {
                    Console.Error.WriteLine(e.Message);
                }
            };
            var url =
                $"https://stream-fxtrade.oanda.com/v3/accounts/{oanda_account_id}/pricing/stream?" +
                "instruments=USD_CAD%2CWTICO_USD";
            client.OpenReadAsync(new Uri(url));

            Console.ReadLine();
        }

        static void GetAccounts()
        {
            const string url = "https://api-fxtrade.oanda.com/v3/accounts";
            string accountsJson;

            var request = (HttpWebRequest)WebRequest.Create(url);
            request.Headers.Add(HttpRequestHeader.Authorization, token);
            request.Method = "GET";
            request.AutomaticDecompression = DecompressionMethods.GZip;

            using (var response = (HttpWebResponse)request.GetResponse())
            using (var stream = response.GetResponseStream())
            using (StreamReader reader = new(stream))
            {
                accountsJson = reader.ReadToEnd();
            }

            Console.WriteLine(FormatJson(accountsJson));
        }

        static void GetProducts()
        {
            string url = $"https://api-fxtrade.oanda.com/v3/accounts/{oanda_account_id}/instruments";
            string productsJson = "";

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Headers.Add(HttpRequestHeader.Authorization, token);
            request.Method = "GET";
            request.AutomaticDecompression = DecompressionMethods.GZip;

            using (var response = (HttpWebResponse)request.GetResponse())
            using (var stream = response.GetResponseStream())
            using (var reader = new StreamReader(stream))
            {
                productsJson = reader.ReadToEnd();
            }

            Console.WriteLine(FormatJson(productsJson));
        }

        static string FormatJson(string json)
        {
            using var jDoc = JsonDocument.Parse(json);
            return  JsonSerializer.Serialize(jDoc, new JsonSerializerOptions { WriteIndented = true });
            
        }
    }
}