Auto-update offsets in C#

using System.Globalization;
using System.Net.Http;
using System.Text.Json;

static readonly HttpClient Http = new()
{
    BaseAddress = new Uri("https://api.decamp.dev")
};

static async Task<JsonDocument> GetOffsetsAsync()
{
    using var response = await Http.GetAsync(
        "/v1/latest?game=roblox&dataset=offsets&format=json");

    response.EnsureSuccessStatusCode();
    await using var stream = await response.Content.ReadAsStreamAsync();
    return await JsonDocument.ParseAsync(stream);
}

static bool TryFindOffset(
    JsonElement data,
    string className,
    string propertyName,
    out ulong offset)
{
    offset = 0;

    if (!data.TryGetProperty("Offsets", out var offsets))
        return false;

    if (!offsets.TryGetProperty(className, out var classOffsets))
        return false;

    if (!classOffsets.TryGetProperty(propertyName, out var entry))
        return false;

    var value = entry.GetString();

    if (value is null || !value.StartsWith("0x"))
        return false;

    return ulong.TryParse(
        value.AsSpan(2),
        NumberStyles.HexNumber,
        CultureInfo.InvariantCulture,
        out offset);
}

using var document = await GetOffsetsAsync();
var data = document.RootElement;

if (!TryFindOffset(
    data,
    "ClimbController",
    "BalanceSpeed",
    out var balanceSpeed))
{
    Console.Error.WriteLine("[-] offset is unavailable");
    return;
}

var generated = data.GetProperty("Dumped At").GetString();
var resolved = data.GetProperty("Total Offsets").GetInt32();

Console.WriteLine($"[+] generated: {generated ?? "unknown"}");
Console.WriteLine($"[+] resolved: {resolved}");
Console.WriteLine($"[+] ClimbController::BalanceSpeed: 0x{balanceSpeed:X}");