HCS.Passwordless.MagicLink 2.0.0

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package HCS.Passwordless.MagicLink --version 2.0.0
                    


                    

                
NuGet\Install-Package HCS.Passwordless.MagicLink -Version 2.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="HCS.Passwordless.MagicLink" Version="2.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="HCS.Passwordless.MagicLink" Version="2.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="HCS.Passwordless.MagicLink" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add HCS.Passwordless.MagicLink --version 2.0.0
                    


                    

                
#r "nuget: HCS.Passwordless.MagicLink, 2.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package HCS.Passwordless.MagicLink@2.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=HCS.Passwordless.MagicLink&version=2.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=HCS.Passwordless.MagicLink&version=2.0.0
                    


                            Install as a Cake Tool

Magic link sign-in for Umbraco 13 members. Part of the HCS Passwordless suite. Provides email-based one-click authentication with built-in rate limiting, single-use tokens, and a branded email notification system.

Installation

dotnet add package HCS.Passwordless.MagicLink

Setup

1. Register (Program.cs)

builder.CreateUmbracoBuilder()
    .AddBackOffice()
    .AddWebsite()
    .AddPasswordlessMagicLink()
    .Build();

2. Map endpoints (Program.cs)

app.MapPasswordlessMembers();

3. Configure (appsettings.json)

{
  "HCS": {
    "Authentication": {
      "LoginPath": "/login",
      "PostLoginRedirectPath": "/member",
      "RejectUnknownEmails": false,
      "MagicLink": {
        "Enabled": true,
        "TokenLifespan": "00:15:00"
      },
      "RateLimits": {
        "PerIpRequestsPerMinute": 10,
        "PerEmailRequestsPerHour": 5,
        "VerifyPerIpPerMinute": 20,
        "FakeWorkDelay": "00:00:00.250"
      },
      "Notifications": {
        "FromAddress": "noreply@example.com",
        "FromName": "My Site",
        "MagicLinkSubject": "Your sign-in link",
        "Branding": {
          "ProductName": "My Site",
          "AccentColor": "#2d6cdf"
        }
      }
    }
  }
}

4. Login view

@await Html.PartialAsync("Passwordless/LoginForm")

Configuration Options

HCS:Authentication

Key Type Default Description
LoginPath string /login URL of the login page
PostLoginRedirectPath string / Redirect after successful sign-in
RejectUnknownEmails bool false Return an error for unrecognised emails (vs. silent success)
Key Type Default Description
Enabled bool true Enable/disable magic link flow
TokenLifespan TimeSpan 00:15:00 How long a link remains valid

HCS:Authentication:RateLimits

Key Type Default Description
PerIpRequestsPerMinute int 10 Max auth requests per IP per minute
PerEmailRequestsPerHour int 5 Max requests per email address per hour
VerifyPerIpPerMinute int 20 Max verify attempts per IP per minute
FakeWorkDelay TimeSpan 00:00:00.250 Minimum response time (timing attack mitigation)

Endpoints

Method Path Description
POST /auth/magic-link/request Request a magic link email
GET /auth/magic-link/verify Show sign-in confirmation page
POST /auth/magic-link/verify Validate token and sign in

Customising Email Templates

Place overriding views in your host project under the same paths:

Views/
  Emails/
    Passwordless/
      MagicLink.cshtml        # HTML email
      MagicLink.Text.cshtml   # Plain-text email
      _Layout.cshtml          # Shared email layout
  Shared/
    Passwordless/
      LoginForm.cshtml        # Login form partial
      MagicLinkConfirm.cshtml # Sign-in confirmation page (shown when link is clicked)

Replacing Services

All services are registered with TryAdd*, so you can replace any of them in DI before calling AddPasswordlessMagicLink:

services.AddScoped<IPasswordlessNotificationSender, MyCustomSender>();

Key replaceable services:

Interface Default implementation Purpose
IPasswordlessNotificationSender EmailNotificationSender Send magic link emails
ISingleUseTokenStore DistributedCacheSingleUseTokenStore Token persistence
IPasswordlessRateLimiter SlidingWindowRateLimiter Rate limiting
IMemberLookupService MemberLookupService Resolve member by email
IPasswordlessSignInService PasswordlessSignInService Sign in member
Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.0.2 79 5/18/2026
2.0.1 80 5/18/2026
2.0.0 82 5/18/2026
2.0.0-beta002 76 5/18/2026
2.0.0-beta001 71 5/18/2026
1.0.1 80 5/18/2026
1.0.0 81 5/18/2026
1.0.0-beta002 71 5/18/2026
1.0.0-beta001 72 5/18/2026