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1. ▌
   Migrate Dotnet8 To Dotnet9 · dotnet bundle

   Upgrade .NET 8 projects to .NET 9 by updating target frameworks, resolving breaking changes, and fixing build errors.
   4k repo stars
2. ▌
   Exp Simd Vectorization · dotnet

   Optimizes hot-path scalar loops in .NET 8+ with cross-platform Vector128/Vector256/Vector512 SIMD intrinsics, or replaces manual math loops with single TensorPrimitives API calls.
   4k repo stars
3. ▌
   Template Comparison · dotnet

   Compares two or more dotnet new templates side by side to help users choose between them based on parameters, feature support, frameworks, and classifications.
   4k repo stars
4. ▌
   Template Validation · dotnet

   Validates custom dotnet new templates for correctness before publishing, catching missing fields, parameter bugs, shortName conflicts, constraint issues, and common authoring mistakes.
   4k repo stars
5. ▌
   Migrate Dotnet9 To Dotnet10 · dotnet bundle

   Migrate .NET 9 projects to .NET 10 by updating target frameworks, resolving breaking changes, and fixing build errors.
   4k repo stars
6. ▌
   Migrate Nullable References · dotnet bundle

   Enable nullable reference types in a C# project and systematically resolve all warnings, file-by-file or project-wide.
   4k repo stars
7. ▌
   Android Tombstone Symbolication · dotnet bundle

   Resolves native backtrace frames from .NET Android app crashes to function names, source files, and line numbers using ELF BuildIds and Microsoft's symbol server.
   4k repo stars
8. ▌
   Exp Mock Usage Analysis · dotnet

   Audits .NET test mock usage by tracing each mock setup through the production code's execution path to find dead, unreachable, redundant, or replaceable mocks.
   4k repo stars
9. ▌
   Directory Build Organization · dotnet bundle

   Organize multi-project .NET repos with Directory.Build.props, Directory.Build.targets, Directory.Packages.props, and Directory.Build.rsp for centralized MSBuild settings and NuGet Central Package Management.
   4k repo stars
10. ▌
    Migrate Vstest To Mtp · dotnet

    Migrates .NET test projects from VSTest to Microsoft.Testing.Platform (MTP), updating project files, CLI arguments, and CI/CD pipelines for MSTest, NUnit, and xUnit.net.
    4k repo stars
11. ▌
    Migrate Dotnet10 To Dotnet11 · dotnet bundle

    Upgrade .NET 10 projects to .NET 11 by updating target frameworks, fixing breaking changes, and updating infrastructure.
    4k repo stars
12. ▌
    Exp Test Maintainability · dotnet

    Analyzes .NET test suites for duplicated boilerplate, copy-paste tests, and structural maintainability issues, producing a report with concrete before/after refactoring suggestions.
    4k repo stars
13. ▌
    Template Instantiation · dotnet

    Creates .NET projects from templates with validated parameters, Central Package Management adaptation, and multi-project composition.
    4k repo stars
14. ▌
    Migrate Mstest V3 To V4 · dotnet

    Fix build errors and breaking changes when upgrading MSTest from v3 to v4, or plan a complete migration.
    4k repo stars
15. ▌
    Migrate Xunit To Mstest · dotnet bundle

    Migrate .NET test projects from xUnit.net (v2 or v3) to MSTest v4, converting attributes, assertions, fixtures, and project configuration.
    4k repo stars
16. ▌
    Template Smart Defaults · dotnet

    Fills in cross-parameter defaults when creating .NET projects with dotnet new, keeping related parameters consistent without overriding values the user set explicitly.
    4k repo stars
17. ▌
    Migrate Mstest V1v2 To V3 · dotnet

    Migrate test projects from MSTest v1 (assembly references) or v2 (NuGet 1.x-2.x) to MSTest v3, handling breaking changes like assertion overloads, DataRow constructors, .testsettings replacement, and target framework updates.
    4k repo stars
18. ▌
    Create Skill · dotnet

    Scaffolds new agent skills conforming to the Agent Skills specification and dotnet/skills repository conventions, generating SKILL.md files with proper frontmatter and directory structures.
    4k repo stars
19. ▌
    Create Skill Test · dotnet

    Scaffolds eval.yaml test files for agent skills in the dotnet/skills repository, including scenario writing, assertion definition, and rubric creation.
    4k repo stars
20. ▌
    Agentic Workflows · dotnet

    Routes requests to design, create, debug, update, or upgrade GitHub Agentic Workflows by loading the appropriate workflow prompt or skill file.
    4k repo stars
21. ▌
    Create Custom Agent · dotnet

    Scaffolds VS Code custom agent files (.agent.md) with YAML frontmatter, tool configuration, handoffs, and instructions for specialized AI personas.
    4k repo stars
22. ▌
    Run Tests · dotnet

    Run, filter, or troubleshoot .NET tests with `dotnet test`, detecting the test platform (VSTest vs Microsoft.Testing.Platform) and framework to apply the correct command syntax.
    4k repo stars
23. ▌
    Crap Score · dotnet

    Calculates CRAP (Change Risk Anti-Patterns) scores for .NET methods by combining cyclomatic complexity with code coverage data from Cobertura XML reports.
    4k repo stars
24. ▌
    Setup Local Sdk · dotnet

    Install a .NET SDK into a project-local directory for safe preview testing, version pinning, or reproducible team setups without modifying the system-wide installation.
    4k repo stars
25. ▌
    Grade Tests · dotnet

    Grades individual test methods and produces a compact markdown table with a letter grade, score band, and one-line note for each test.
    4k repo stars
26. ▌
    Dump Collect · dotnet bundle

    Configure and collect crash dumps for modern .NET applications (CoreCLR and NativeAOT) on Linux, macOS, and Windows, including containers.
    4k repo stars
27. ▌
    Maui Theming · dotnet bundle

    Add light/dark mode, custom branded themes, and runtime theme switching to .NET MAUI apps using AppThemeBinding, ResourceDictionary swapping, and system theme detection APIs.
    4k repo stars
28. ▌
    Test Tagging · dotnet

    Analyzes test suites across multiple languages and tags each test with standardized traits (positive, negative, critical-path, etc.) for better test categorization and coverage visibility.
    4k repo stars
29. ▌
    MCP Csharp Test · dotnet bundle

    Test C# MCP servers at unit and integration levels using xUnit, Moq, and the MCP client SDK.
    4k repo stars
30. ▌
    Filter Syntax · dotnet

    Reference for test filter syntax across VSTest and MTP platforms, covering MSTest, NUnit, xUnit v3, and TUnit frameworks with examples and translation guidance.
    4k repo stars
31. ▌
    Authoring Github Workflows · dotnet

    Author and review GitHub Actions workflow YAML to ensure syntactic and structural correctness, preventing failures from unquoted expressions and other YAML-vs-Actions traps.
    4k repo stars
32. ▌
    MCP Csharp Debug · dotnet bundle

    Run, debug, and interactively test C# MCP servers locally with IDE configuration, MCP Inspector, and GitHub Copilot Agent Mode integration.
    4k repo stars
33. ▌
    Maui Safe Area · dotnet bundle

    Provides guidance on using the new .NET 10 cross-platform safe area API for edge-to-edge layouts, keyboard avoidance, and migration from legacy iOS-only APIs.
    4k repo stars
34. ▌
    Mtp Hot Reload · dotnet

    Sets up Microsoft Testing Platform hot reload to iterate fixes on failing tests without rebuilding, covering package installation, environment configuration, and the iterative workflow.
    4k repo stars
35. ▌
    MCP Csharp Create · dotnet bundle

    Create MCP servers using the C# SDK and .NET project templates, covering scaffolding, tool/prompt/resource implementation, and transport configuration for stdio and HTTP.
    4k repo stars
36. ▌
    Convert To Cpm · dotnet bundle

    Migrate .NET projects from per-project package versioning to NuGet Central Package Management (CPM) using Directory.Packages.props, with baseline build capture, version conflict resolution, and post-conversion validation.
    4k repo stars
37. ▌
    MCP Csharp Publish · dotnet bundle

    Publish and deploy C# MCP servers to NuGet, Docker, Azure, and the MCP Registry.
    4k repo stars
38. ▌
    Configure Auth · dotnet

    Add authentication and authorization to a Blazor Web App, handling render modes, Identity pages, and auth state serialization.
    4k repo stars
39. ▌
    Plan UI Change · dotnet

    Plan complex Blazor UI features by decomposing them into focused, composable components with clear data flow and implementation order.
    4k repo stars
40. ▌
    Use JS Interop · dotnet

    Add, review, or fix JavaScript interop in Blazor components, including collocated modules, lifecycle timing, batching, typed wrappers, and disposal patterns.
    4k repo stars
41. ▌
    Microbenchmarking · dotnet bundle

    Create, run, configure, and review BenchmarkDotNet microbenchmarks for .NET code, covering project setup, comparison strategies, and cost-aware execution.
    4k repo stars
42. ▌
    Maui Data Binding · dotnet bundle

    Wire UI controls to ViewModel properties with compile-time safety, change notification, and minimal overhead using .NET MAUI data bindings.
    4k repo stars
43. ▌
    Msbuild Server · dotnet

    Improve CLI build performance by enabling MSBuild Server for persistent caching of evaluation results across sequential builds.
    4k repo stars
44. ▌
    Assertion Quality · dotnet

    Analyzes test suites to measure assertion diversity, detect shallow or trivial assertions, and identify tests that lack meaningful verification.
    4k repo stars
45. ▌
    Coverage Analysis · dotnet bundle

    Analyzes .NET project code coverage and CRAP (Change Risk Anti-Patterns) scores to identify risk hotspots, methods blocking coverage gains, and prioritize where to add tests.
    4k repo stars
46. ▌
    Test Gap Analysis · dotnet

    Analyzes production code to find gaps in existing tests by reasoning about hypothetical mutations and checking whether tests would catch them.
    4k repo stars
47. ▌
    Csharp Scripts · dotnet

    Run file-based C# apps with the .NET CLI for quick experiments, prototypes, and small utilities without creating a project.
    4k repo stars
48. ▌
    Dotnet Pinvoke · dotnet bundle

    Correctly call native C/C++ libraries from .NET using P/Invoke and LibraryImport, covering function signatures, string marshalling, memory lifetime, SafeHandle, and cross-platform patterns.
    4k repo stars
49. ▌
    Technology Selection · dotnet

    Guides technology selection and implementation of AI and ML features in .NET 8+ applications using ML.NET, Microsoft.Extensions.AI, Microsoft Agent Framework, GitHub Copilot SDK, ONNX Runtime, and OllamaSharp.
    4k repo stars
50. ▌
    Author Component · dotnet bundle

    Create or review Blazor components (.razor files) with correct architecture, covering parameters, EventCallback, RenderFragment, lifecycle, async patterns, disposal, and CSS isolation.
    4k repo stars
51. ▌
    Dotnet Maui Doctor · dotnet bundle

    Diagnoses and fixes .NET MAUI development environment issues by validating .NET SDK, workloads, Java JDK, Android SDK, Xcode, and Windows SDK with version requirements discovered dynamically from NuGet.
    4k repo stars
52. ▌
    Maui App Lifecycle · dotnet bundle

    Handle .NET MAUI application state transitions, Window lifecycle events, and state preservation across backgrounding and resume cycles.
    4k repo stars
53. ▌
    Item Management · dotnet

    Provides canonical patterns for MSBuild item groups: Include/Remove/Update semantics, item metadata, batching with %(Metadata), transforms, per-item filtering, and cross-product batching pitfalls.
    4k repo stars
54. ▌
    Code Testing Agent · dotnet bundle

    Generates and writes unit tests for any programming language using a multi-agent pipeline that researches, plans, and implements tests with build and verification steps.
    4k repo stars
55. ▌
    Platform Detection · dotnet

    Detects the test platform (VSTest vs Microsoft.Testing.Platform) and test framework (MSTest, xUnit, NUnit, TUnit) from .NET project files.
    4k repo stars
56. ▌
    Test Anti Patterns · dotnet

    Audits test files for anti-patterns and quality issues, producing a severity-ranked report across multiple languages and frameworks.
    4k repo stars
57. ▌
    Dotnet Webapi · dotnet

    Guides creation and modification of ASP.NET Core Web API endpoints with correct HTTP semantics, OpenAPI metadata, and error handling.
    4k repo stars
58. ▌
    Maui Collectionview · dotnet bundle

    Guidance for implementing CollectionView in .NET MAUI apps — data display, layouts (list & grid), selection, grouping, scrolling, empty views, templates, incremental loading, swipe actions, and pull-to-refresh.
    4k repo stars
59. ▌
    Eval Performance · dotnet

    Diagnose and improve MSBuild project evaluation performance by analyzing phases, glob patterns, import chains, and property functions.
    4k repo stars
60. ▌
    Extension Points · dotnet

    Guides MSBuild extensibility through CustomBefore/CustomAfter hooks, wildcard imports, import gating, and NuGet package build extension layout.
    4k repo stars
61. ▌
    Target Authoring · dotnet

    Canonical patterns for writing custom MSBuild targets, covering the three-level target chain, chain extension, DependsOnTargets vs BeforeTargets vs AfterTargets, Returns vs Outputs, and common pitfalls.
    4k repo stars
62. ▌
    System Text JSON Net11 · dotnet

    Provides guidance on new System.Text.Json APIs introduced in .NET 11, including typed JsonTypeInfo access and PascalCase naming policy.
    4k repo stars
63. ▌
    Sample Skill · dotnet bundle

    Generates personalized greetings based on the time of day and the person's name.
    4k repo stars
64. ▌
    Collect User Input · dotnet

    Build forms, validate data, and react to user input in Blazor applications.
    4k repo stars
65. ▌
    Binlog Generation · dotnet

    Add the /bl switch to MSBuild-based commands to generate binary logs for build diagnostics and performance analysis.
    4k repo stars
66. ▌
    Build Parallelism · dotnet

    Optimize MSBuild build parallelism by configuring /maxcpucount, graph build mode, project references, and analyzing binlogs to reduce multi-project solution build times.
    4k repo stars