MagicCSharp.Cli 1.0.3

MagicCSharp.Cli

mcs — scaffolding for a repository built on MagicCSharp. A service, a domain, an entity across the four files that have to agree about it, and a validator that fails CI when the tree rots or someone calls DateTime.Now. The layout it creates is how a service stays readable at a hundred use cases: a tree of domains, each owning its use cases, entities, endpoints and tests.

dotnet tool install -g MagicCSharp.Cli

mcs init --prefix Acme
mcs create-app --name Shop --database shop
dotnet run --project Apps/Shop/Shop.App

Or pin it per repository, so the whole team gets the same version:

dotnet new tool-manifest
dotnet tool install MagicCSharp.Cli
# commit .config/dotnet-tools.json; teammates run: dotnet tool restore

Nothing is overwritten — an existing file is reported and skipped. Re-running changes nothing, so every command is safe to repeat.

add-entity writes the entity, its edit and filter, the repository interface, the DAL and the EF repository, adds the DbSet and registers the repository — across three projects that each have to agree about names, namespaces and generic arguments. Not typing saved so much as a class of mistake removed.

validate catches the things that compile and then fail later: DateTime.Now where TimeProvider belongs, an entity on an event, IOptions in a use case, a non-nullable column without [Required]. It exits non-zero, so put it in CI.

affected is what lets CI build, test and deploy only the apps a change touched. It follows each app's project references, so a change to a shared library under Libs/ picks every app that uses it and no other; a change to Directory.Packages.props or another file every build reads picks them all. --json prints a GitHub Actions matrix. The CI/CD guide sets up the whole pipeline around it.

init also makes the code-style conventions compile errors: the Directory.Build.props it writes references MagicCSharp.Analyzers for every project, and its .editorconfig tells those rules that EF migrations are generated code. Pass --no-build-rules to leave both out.

It also writes the conventions down for AI coding agents — and for a person new to the code: an AGENTS.md, which every major coding agent reads, a CLAUDE.md that imports it for Claude Code, and an .ai-knowledge/ folder of guides, one per topic (use cases, entities, events, background services, testing, style), plus .ai-knowledge/project.md for what is specific to your repository. When a newer mcs ships better guides, mcs update ai-files brings them in; it overwrites the guides it ships and never touches project.md or any file of your own. Pass --no-ai-knowledge to leave them out. Their source is AIAgents/ in the MagicCSharp repository.

Your own templates

Everything generated comes from a template you can replace, one file at a time:

mcs templates list
mcs templates eject Entities/dal.cs.hbs

Across several repositories, keep the templates in a repository of their own and add it as a submodule at .magiccsharp/templates. See template overrides.

The structure this creates is optional; the MagicCSharp packages work in any layout. Full guide: https://github.com/MagicDoorInc/MagicCSharp/blob/master/docs/repository-layout.md