Nedo.AspNet.Authentication.Keycloak 2.0.9

.NET 9.0 This package targets .NET 9.0. The package is compatible with this framework or higher. 
dotnet add package Nedo.AspNet.Authentication.Keycloak --version 2.0.9
                    


                    

                
NuGet\Install-Package Nedo.AspNet.Authentication.Keycloak -Version 2.0.9
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="Nedo.AspNet.Authentication.Keycloak" Version="2.0.9" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Nedo.AspNet.Authentication.Keycloak" Version="2.0.9" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Nedo.AspNet.Authentication.Keycloak" />
                    


                            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 Nedo.AspNet.Authentication.Keycloak --version 2.0.9
                    


                    

                
#r "nuget: Nedo.AspNet.Authentication.Keycloak, 2.0.9"
#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 Nedo.AspNet.Authentication.Keycloak@2.0.9
#: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=Nedo.AspNet.Authentication.Keycloak&version=2.0.9
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Nedo.AspNet.Authentication.Keycloak&version=2.0.9
                    


                            Install as a Cake Tool

Nedo.AspNet.Authentication.Keycloak

Keycloak as the canonical token issuer (JWT-bearer pattern). Your API trusts Keycloak's JWTs, validates them, and uses the result for authorization. Keycloak's realm_access.roles and resource_access.<client>.roles are auto-mapped to ASP.NET Core's ClaimTypes.Role so [Authorize(Roles = "admin")] just works.

Looking for Keycloak as a sign-in option that mints your own JWTs? That's AddKeycloakSignIn in this same package — see docs/providers/social/keycloak.md. The two patterns coexist.

Install

dotnet add package Nedo.AspNet.Authentication.Keycloak

Quickstart — JWT bearer (resource server)

using Nedo.AspNet.Authentication.Keycloak;

builder.Services.AddKeycloak(opts =>
{
    opts.ServerUrl = "https://keycloak.example.com";
    opts.Realm     = "my-realm";
    opts.Audience  = "my-api";
});

builder.Services.AddAuthorization();
builder.Services.AddHttpContextAccessor();
builder.Services.AddScoped<IAuthContext, AuthContext>();

var app = builder.Build();
app.UseAuthentication();
app.UseNedoAuthContext();
app.UseAuthorization();

app.MapGet("/admin", (IAuthContext auth) => auth.UserId)
   .RequireAuthorization(p => p.RequireRole("admin"));

Quickstart — Keycloak as a sign-in option

builder.Services.AddKeycloakSignIn(opts =>
{
    opts.ServerUrl       = "https://keycloak.example.com";
    opts.Realm           = "my-realm";
    opts.ClientId        = "my-spa";
    opts.ClientSecret    = builder.Configuration["Keycloak:Secret"];
    opts.FrontendOrigin  = "https://app.example.com";
});

app.MapKeycloakAuth();   // /auth/keycloak/start, /auth/keycloak/callback (popup + postMessage)

The popup flow exchanges the Keycloak code for a Nedo session via ExternalSignInService — your app issues its own JWTs, with Keycloak link metadata stored in nedo_external_logins. Pair with Nedo.AspNet.Authentication.Local.

Claims auto-mapping

Keycloak claim shape Mapped to
realm_access.roles: ["admin", "manager"] ClaimTypes.Role (one per value)
resource_access.<client>.roles: ["editor"] ClaimTypes.Role (one per value)
preferred_username ClaimTypes.Name
email ClaimTypes.Email

Customize via INedoClaimsTransformer from Nedo.AspNet.Authentication.Claims.

Docs

License

MIT — see LICENSE.

Product Compatible and additional computed target framework versions.
.NET net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  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
2.0.9 100 5/11/2026
2.0.8 95 5/6/2026
2.0.7 79 5/5/2026
2.0.6 83 5/5/2026
2.0.4 84 5/4/2026
2.0.3 87 5/4/2026
2.0.2 88 5/2/2026
2.0.1 92 5/2/2026
2.0.0 84 5/1/2026