dotnet/skills agent skills

Resolves .NET runtime frames in Apple .ips crash logs to function names, source files and line numbers using dSYM symbols, atos and the Microsoft symbol server.

dotnet/skills

Resolves native crash frames from .NET Android tombstones to function names, source files and line numbers using BuildIds, Microsoft's symbol server and llvm-symbolizer.

dotnet/skills

Scans C# and .NET code for about 50 performance anti-patterns and reports prioritized findings with concrete fixes, at a scan depth you choose.

dotnet/skills

Statically pairs source files with test files to list code that no test references, using Roslyn for C# or tree-sitter for many languages, with no build.

dotnet/skills

Activate this skill when BenchmarkDotNet (BDN) is involved in the task — creating, running, configuring, or reviewing BDN benchmarks.

dotnet/skills

Makes .NET projects compatible with Native AOT and trimming by resolving IL trim and AOT analyzer warnings through annotations rather than suppressions.

dotnet/skills

Configures automatic crash dumps or captures dumps from running processes for modern .NET apps on Linux, macOS and Windows, including Docker and Kubernetes.

dotnet/skills

Migrate a .NET 8 project to .NET 9 and resolve all breaking changes.

dotnet/skills

Migrate a .NET 9 project or solution to .NET 10 and resolve all breaking changes.

dotnet/skills

Set up NuGet trusted publishing (OIDC) on a GitHub Actions repo — replaces long-lived API keys with short-lived tokens.

dotnet/skills

Writes and reviews Blazor .razor components with correct parameters, EventCallback, lifecycle, async and disposal patterns, for components that need no JavaScript interop.

dotnet/skills

Interprets .NET coverage reports to explain line and branch gaps, target arithmetic and, on request, CRAP-based risk hotspots, without rerunning tests.

dotnet/skills

Creates VS Code custom agent files (.agent.md) for specialized AI personas with tools, instructions, and handoffs.

dotnet/skills

Enable nullable reference types in a C project and systematically resolve all warnings.

dotnet/skills

Guides technology selection and implementation of AI and ML features in .NET 8+ applications using ML.NET, Microsoft.Extensions.AI (MEAI), Microsoft Agent Framework (MAF), GitHub Copilot SDK, ONNX…

dotnet/skills

Refactors C# and .NET code without changing behavior, using binding-aware edits plus a build and tests, and separating out or declining anything that alters behavior.

dotnet/skills

Diagnoses and fixes .NET MAUI development environments by checking the .NET SDK, workloads, JDK, Android SDK, Xcode and Windows SDK against requirements read from NuGet.

dotnet/skills

Helps write, review and debug .NET declarations that call native C and C++ libraries, covering signatures, string marshalling, memory lifetime and SafeHandle.

dotnet/skills

Diagnoses and fixes skills in the dotnet/skills repository that lose to their own baseline, fail to activate, time out, or return "no credible improvement".

dotnet/skills

.NET MAUI app lifecycle guidance — the four app states, cross-platform Window lifecycle events (Created, Activated, Deactivated, Stopped, Resumed, Destroying), platform-specific lifecycle mapping…

dotnet/skills

Guidance for implementing CollectionView in .NET MAUI apps — data display, layouts (list & grid), selection, grouping, scrolling, empty views, templates, incremental loading, swipe actions, and…

dotnet/skills

Guidance for .NET MAUI XAML and C data bindings — compiled bindings, INotifyPropertyChanged / ObservableObject, value converters, binding modes, multi-binding, relative bindings, fallbacks, and MVVM…

dotnet/skills

Guidance for configuring dependency injection in .NET MAUI apps — service registration in MauiProgram.cs, lifetime selection (Singleton / Transient / Scoped), constructor injection, Shell navigation…

dotnet/skills

.NET MAUI safe area and edge-to-edge layout guidance for .NET 10+.

dotnet/skills

Guide for implementing Shell-based navigation in .NET MAUI apps.

dotnet/skills

Guide for theming .NET MAUI apps — light/dark mode via AppThemeBinding, ResourceDictionary theme switching, DynamicResource bindings, system theme detection, and user theme preferences.

dotnet/skills

Migrate a .NET 10 project or solution to .NET 11 and resolve all breaking changes.

dotnet/skills

Convert .NET tests from NUnit 3/4 to MSTest v4 while preserving VSTest or MTP.

dotnet/skills

Convert .NET tests from xUnit.net v2/v3 to MSTest v4 while preserving VSTest or MTP.

dotnet/skills

DO NOT INVOKE when the primary request explicitly asks to convert, migrate, modernize, or rewrite a legacy/old-style project to SDK style; use msbuild-modernization.

dotnet/skills

Identify a .NET project's test platform, framework, command mode, and SDK-style vs classic project system.

dotnet/skills

ALWAYS USE when asked to fix, rewrite, update, improve, modernize, show corrected code for, or explain existing MSTest tests or MSTest-specific configuration.

dotnet/skills

Guides creation and modification of ASP.NET Core Web API endpoints with correct HTTP semantics, OpenAPI metadata, and error handling.

dotnet/skills

Create a new ASP.NET Core web application or web site using Blazor.

dotnet/skills

Guide developers through capturing diagnostic artifacts to diagnose production .NET performance issues.

dotnet/skills

Analyze assertion quality, depth, variety, and false confidence in existing tests.

dotnet/skills

Author and review GitHub Actions workflow YAML safely so syntactically-valid YAML can't ship a workflow that GitHub Actions refuses to run.

dotnet/skills

Establish MSBuild/.NET build performance baselines before optimizing.

dotnet/skills

Diagnoses .NET Framework CLR activation issues using CLR activation logs (CLRLoad logs) produced by mscoree.dll.

dotnet/skills

ALWAYS USE whenever asked to write, add, or generate unit tests for existing code in xUnit, MSTest, NUnit, pytest, Vitest/Jest, Go, or another framework, including "tests only for" one helper…

dotnet/skills

Build forms, validate data, and react to user input in Blazor.

dotnet/skills

Add authentication and authorization to a Blazor Web App, accounting for the app's render mode.

dotnet/skills

Guides conversion of a pre-.NET 8 Blazor Server app into a .NET 8+ Blazor Web App.

dotnet/skills

Share state between components that don't have a direct parent-child parameter relationship, using cascading values, scoped services with change events, or CascadingValueSource via DI.

dotnet/skills

Choosing an MSBuild CopyToOutputDirectory / CopyToPublishDirectory mode: Never, PreserveNewest, Always, and IfDifferent (MSBuild 17.13+), plus $(SkipUnchangedFilesOnCopyAlways).

dotnet/skills

Calculates CRAP (Change Risk Anti-Patterns) for a named .NET method, class, or file.

dotnet/skills

Generate or scaffold ASP.NET Core code — Razor Pages, Blazor components, MVC controllers, views, and Minimal API endpoints — without using ASP.NET Core CLI scaffolding/code-generation tools.

dotnet/skills

Scaffolds new agent skills for the dotnet/skills repository.

dotnet/skills