JasperFx 2.0.0

.NET 9.0 This package targets .NET 9.0. The package is compatible with this framework or higher. 
dotnet add package JasperFx --version 2.0.0
                    


                    

                
NuGet\Install-Package JasperFx -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="JasperFx" Version="2.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="JasperFx" Version="2.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="JasperFx" />
                    


                            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 JasperFx --version 2.0.0
                    


                    

                
#r "nuget: JasperFx, 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 JasperFx@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=JasperFx&version=2.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=JasperFx&version=2.0.0
                    


                            Install as a Cake Tool

JasperFx

Foundational helpers and command line support used by JasperFx and the Critter Stack projects (Marten, Wolverine, Polecat, Weasel).

Provides:

  • JasperFx.CommandLine — a Spectre-Console-backed CLI framework (formerly the Oakton library), the host for dotnet run -- <command> style tooling.
  • JasperFx.CodeGeneration — Roslyn-backed runtime code generation, with pluggable ITypeLoader strategies (Static / Dynamic / Auto) for AOT-friendly deployments.
  • JasperFx.Core — reflection / type-scanning helpers, IoC primitives, the GenericFactoryCache hot-path delegate cache, and RecentlyUsedCache LRU.
  • JasperFx.MultiTenancy — shared tenant-id abstractions (IHasTenantId, TenantId, TenantIdStyle) consumed across the Critter Stack.
  • JasperFx.Descriptors — diagnostic descriptor types that products like CritterWatch use to render configuration / capability snapshots.

Quick start

// CLI host
return await new HostBuilder()
    .ConfigureServices(services => services.AddJasperFxCommands())
    .RunJasperFxCommandsAsync(args);

// Codegen
var rules = new GenerationRules
{
    TypeLoadMode = TypeLoadMode.Static,
    GeneratedNamespace = "MyApp.Generated"
};

Documentation

Full docs at https://jasperfx.net.

Repo: github.com/JasperFx/jasperfx.

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 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 (8)

Showing the top 5 NuGet packages that depend on JasperFx:

Package Downloads
Marten

.NET Transactional Document DB and Event Store on PostgreSQL
Weasel.Core

Core Weasel types for ADO.Net helpers, spin off of Marten
JasperFx.RuntimeCompiler

Runtime Roslyn Compilation and Code Generation Chicanery
Lamar

Fast ASP.Net Core compatible IoC Tool, Successor to StructureMap
WolverineFx

Build Robust Event Driven Architectures with Simpler Code

GitHub repositories (4)

Showing the top 4 popular GitHub repositories that depend on JasperFx:

Repository Stars
JasperFx/marten
.NET Transactional Document DB and Event Store on PostgreSQL
JasperFx/wolverine
Supercharged .NET server side development!
JasperFx/lamar
Fast Inversion of Control Tool and Successor to StructureMap
JasperFx/alba
Easy integration testing for ASP.NET Core applications
Version Downloads Last Updated
2.0.0 0 5/21/2026
2.0.0-rc.3 0 5/21/2026
2.0.0-rc.2 583 5/20/2026
2.0.0-rc.1 40 5/20/2026
2.0.0-alpha.20 1,338 5/19/2026
2.0.0-alpha.17 910 5/19/2026
2.0.0-alpha.16 233 5/19/2026
2.0.0-alpha.15 95 5/19/2026
2.0.0-alpha.14 129 5/19/2026
2.0.0-alpha.13 3,796 5/14/2026
2.0.0-alpha.12 286 5/13/2026
2.0.0-alpha.11 3,015 5/12/2026
2.0.0-alpha.10 3,176 5/12/2026
2.0.0-alpha.9 251 5/12/2026
2.0.0-alpha.8 755 5/12/2026
2.0.0-alpha.7 82 5/12/2026
2.0.0-alpha.6 5,786 5/12/2026
2.0.0-alpha.5 1,499 5/11/2026
2.0.0-alpha.4 432 5/11/2026
2.0.0-alpha.3 132 5/11/2026
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