tooling
Implementation details for the EF Core dotnet-ef CLI and tooling. Use when changing dotnet-ef commands, the ef wrapper, EFCore.Tools (PMC), or EFCore.Tasks MSBuild integration.
- Installs
- 53
- Last 24h
- —
- Trending rank
- —
- Security
- Not audited
Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/dotnet/efcore --skill tooling- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads tooling automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Tooling
The dotnet ef CLI and Visual Studio Package Manager Console commands for migrations, scaffolding, and compiled models.
dotnet-ef CLI (src/dotnet-ef/)
RootCommand parses global options. Subcommands implemented in src/ef/Commands/. Each invokes MSBuild to build, then shells out via dotnet exec ef.dll, which hosts OperationExecutor.
PMC (src/EFCore.Tools/)
PowerShell module: Add-Migration, Update-Database, Scaffold-DbContext, Optimize-DbContext, etc.
MSBuild Tasks (src/EFCore.Tasks/)
NuGet package Microsoft.EntityFrameworkCore.Tasks provides build/publish-time compiled model and precompiled query generation. Targets in buildTransitive/Microsoft.EntityFrameworkCore.Tasks.targets.
Command Option Ownership
Trace an option to the code that consumes it before changing command or operation contracts. The outer dotnet-ef launcher builds the project and forwards remaining command-line arguments to ef.dll; the inner command under src/ef/Commands/ parses command-specific options.
- Keep presentation-only behavior in the inner command. For example, suppressing the completion message from
MigrationsAddCommand.Execute()should guard itsReporter.WriteInformation()call and must not changeIOperationExecutor.AddMigration(). - Forward a value through
OperationExecutorBaseonly when the design-time operation inMicrosoft.EntityFrameworkCore.Designneeds it. - Treat PMC and
EFCore.Tasksas separate entry points. Change them only when the requested behavior applies to those surfaces too.
Testing
- CLI tests:
test/dotnet-ef.Tests/,test/ef.Tests/ - EFCore.Tasks has no dedicated test project — for task/target changes, create a test project and manually run
dotnet build/dotnet publishwithEFOptimizeContext=trueto verify
Validation
- For tool changes, create a test project and manually run affected commands to verify behavior
dotnet ef migrations scriptoutput matches expected DDL
FAQ
What does the tooling skill do?
Implementation details for the EF Core dotnet-ef CLI and tooling. Use when changing dotnet-ef commands, the ef wrapper, EFCore.Tools (PMC), or EFCore.Tasks MSBuild integration.
How do I install tooling?
Run npx skills add https://github.com/dotnet/efcore --skill tooling in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/tooling/ (personal) or .claude/skills/tooling/ (project).
Which AI agents can use tooling?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is tooling safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains tooling?
It is published by dotnet in dotnet/efcore. It has 53 recorded installs.
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