Cratis.Stage 1.0.1

Prefix Reserved
.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package Cratis.Stage --version 1.0.1
                    


                    

                
NuGet\Install-Package Cratis.Stage -Version 1.0.1
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="Cratis.Stage" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Cratis.Stage" Version="1.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Cratis.Stage" />
                    


                            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 Cratis.Stage --version 1.0.1
                    


                    

                
#r "nuget: Cratis.Stage, 1.0.1"
#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 Cratis.Stage@1.0.1
#: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=Cratis.Stage&version=1.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Cratis.Stage&version=1.0.1
                    


                            Install as a Cake Tool

Cratis Stage

Stage takes an authored event model — the intermediate JSON format produced by Cratis Studio or any other tool — and materializes it into a live, running Cratis application at runtime: dynamically generated commands and queries (Arc), read models and projections (Chronicle), and a Scalar/OpenAPI surface. No code generation, no compilation — the model is the application.

Stage is self contained: it has no dependency on Studio. It is consumed as containers (the host and the specification runner) and as a NuGet package (the contracts) from Studio, the Cratis CLI, or your own tooling.

Projects

Project Package / Image Purpose
Source/Contracts Cratis.Stage.Contracts (NuGet) The event model intermediate format (with its embedded JSON schema), specification run results, and the serialization for both (EventModelFile, SpecificationRunResultsFile, StageJson).
Source/Stage Cratis.Stage (NuGet) The engine — synthesizes commands, queries, validators, read models, and projections from a deserialized EventModel at runtime.
Source/Host cratis/stage (Docker) Self-contained play sandbox: MongoDB + Chronicle kernel + the Stage engine in one container. Mount a model at /eventmodel, get a live API on port 9090.
Source/SpecRunner cratis/stage-specrunner (Docker) Run-to-completion job that loads an event model from the mounted /model folder, runs its specifications and writes results.json to the mounted /output folder.

Consuming

Everything Stage needs as input is a serialized EventModel — the types and the exact serialization live in Cratis.Stage.Contracts, so consumers write the file with EventModelFile.Write(model) and never hand-roll JSON.

Studio / CLI ──(event-model.json)──▶ cratis/stage            ⇒ live HTTP API (port 9090)
Studio / CLI ──(event-model.json)──▶ cratis/stage-specrunner ⇒ results.json
  • The host takes the model file path as its first argument (the container entrypoint finds it in /eventmodel). Deployment configuration can be supplied through a dedicated cratis-stage.json file (path overridable with the STAGE_CONFIG environment variable) instead of appsettings.json.
  • The spec runner takes --model <file> and --output <file>, with optional --slice <guid> / --spec <guid> filters; the container defaults to /model/event-model.json and /output/results.json.

Building

dotnet build                # Debug
dotnet test                 # run specs
dotnet build -c Release     # Release — treat warnings as errors

Container images are built from the repository root:

docker build -f Source/Host/Dockerfile -t cratis/stage .
docker build -f Source/SpecRunner/Dockerfile -t cratis/stage-specrunner .
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

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Version Downloads Last Updated
1.0.1 48 7/15/2026