Добавьте файлы проекта.

Demo/Demo.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ArgumentsToolkit\ArgumentsToolkit.csproj" />
+  </ItemGroup>
+
+</Project>

Demo/Program.cs

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+using ArgumentsToolkit;
+using ArgumentsToolkit.Help;
+
+namespace Demo;
+
+internal class Program
+{
+    static int Main(string[] args)
+    {   // Пример запуска:
+        // dotnet run --server myhost --port 8080 --env staging --mode Incremental --config "{\"Author\":\"FrigaT\",\"Timeout\":60}"
+
+
+        var result = ArgumentsParser.Parse<DeployOptions>(args);
+
+        if (!result.Success)
+        {
+            Console.ForegroundColor = ConsoleColor.Red;
+            foreach (var e in result.Errors)
+                Console.WriteLine($"{e.Code}: {e.Message}");
+            Console.ResetColor();
+
+            var help = HelpCollector.Collect<DeployOptions>();
+            Console.WriteLine(help.AsMarkdown());
+            return 1;
+        }
+
+        if (!Validator.Validate(result.Value!, out var vErrors))
+        {
+            Console.ForegroundColor = ConsoleColor.Yellow;
+            foreach (var e in vErrors)
+                Console.WriteLine($"Validation: {e}");
+            Console.ResetColor();
+            return 2;
+        }
+
+        Console.ForegroundColor = ConsoleColor.Green;
+        Console.WriteLine("Аргументы успешно разобраны и прошли валидацию:");
+        Console.WriteLine($"Server: {result.Value!.Server}");
+        Console.WriteLine($"Port: {result.Value.Port}");
+        Console.WriteLine($"Environment: {result.Value.Environment}");
+        Console.WriteLine($"DryRun: {result.Value.DryRun}");
+        Console.WriteLine($"Mode: {result.Value.Mode}");
+        Console.WriteLine($"Config.Author: {result.Value.Config.Author}");
+        Console.WriteLine($"Config.Timeout: {result.Value.Config.Timeout}");
+        Console.ResetColor();
+
+        return 0;
+
+    }
+}
+
+
+public class DeployOptions
+{
+    [Option("server", "s", "Адрес сервера", required: true)]
+    public string Server { get; set; } = default!;
+
+    [Option("port", "p", "Порт подключения", defaultValue: 22)]
+    [Range(1, 65535)]
+    public int Port { get; set; }
+
+    [Option("env", "e", "Среда деплоя")]
+    [AllowedValues("dev", "staging", "prod")]
+    public string Environment { get; set; } = "dev";
+
+    [Option("dry-run", "d", "Пробный запуск без изменений")]
+    public bool DryRun { get; set; }
+
+    [Option("config", "c", "JSON‑конфиг для деплоя")]
+    [OptionConverter(typeof(JsonOptionConverter))]
+    public MyConfig Config { get; set; } = new();
+
+    [Option("mode", "m", "Режим деплоя")]
+    public DeployMode Mode { get; set; } = DeployMode.Full;
+}
+
+public class MyConfig
+{
+    public string Author { get; set; } = "unknown";
+    public int Timeout { get; set; } = 30;
+}
+
+public enum DeployMode
+{
+    Full,
+    Incremental,
+    DryRun
+}

Demo/Properties/launchSettings.json

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+{
+  "profiles": {
+    "Demo": {
+      "commandName": "Project",
+      "commandLineArgs": "--server myhost --port 8080 --env staging --mode Incremental --config \"{\\\"Author\\\":\\\"FrigaT\\\",\\\"Timeout\\\":60}"
+    },
+    "Demo  (Error)": {
+      "commandName": "Project",
+      "commandLineArgs": "--server myhost --port \"128080\" --env staging --mode Incremental --config \"{\\\"Author\\\":\\\"FrigaT\\\",\\\"Timeout\\\":60}"
+    }
+  }
+}