Benten SDK

using Benten.SDK;
using Benten.SDK.Models;

var builder = WebApplication.CreateBuilder(args);
// One client for the whole app: it gets and renews its access token from your API key
builder.Services.AddSingleton(new BentenClient(builder.Configuration["Benten:ApiKey"]!));
var app = builder.Build();

// Called by your sign-in page after the user enters their email
app.MapPost("/signin/approve", async (LoginAttempt attempt, BentenClient benten) =>
{
    // 1. Ask the user to approve the sign-in on their phone
    BentenResult result = await benten.RequestLoginApprovalAsync(new LoginRequest
    {
        Country     = attempt.Country,       // e.g. "United States"
        PhoneNumber = attempt.PhoneNumber,   // e.g. "6501234567"
        Username    = attempt.Email          // shown on the notification
    });

    // 2. Only sign the user in if they tapped Allow
    return result.IsApproved ? Results.Ok() : Results.Unauthorized();
});

app.Run();

record LoginAttempt(string Email, string Country, string PhoneNumber);

// The app calls YOUR backend, which uses Benten.SDK (see the Website tab).
// No Benten API key is stored on the phone.
var http = new HttpClient { BaseAddress = new Uri("https://api.yourcompany.com/") };

var response = await http.PostAsJsonAsync("signin/approve", new
{
    Email       = EmailEntry.Text,
    Country     = "United States",
    PhoneNumber = PhoneEntry.Text
});

if (response.IsSuccessStatusCode)
    await Shell.Current.GoToAsync("//home");        // approved on the user's phone
else
    await DisplayAlert("Sign-in not approved", "The request was denied or timed out.", "OK");

// dotnet add package Benten.PassCode
using Benten.PassCode;

using var generator = new PassCodeGenerator();
string passcode = generator.Generate(deviceUuid, clientSpecificValue);

using Benten.SDK;
using Benten.SDK.Models;

var benten = new BentenClient(Environment.GetEnvironmentVariable("BENTEN_API_KEY")!);

var result = await benten.RequestLoginApprovalAsync(new LoginRequest
{
    Country     = "United States",
    PhoneNumber = "6501234567",
    Username    = "alice@example.com"
});

Console.WriteLine(result.IsApproved ? "Approved" : $"Not approved: {result.Response}");