942 mods tagged C# and .NET that install into Claude Code, measured the same four ways as everything else here: what each costs in tokens on every session, what a security scan found and why, whether it is the original, and what changed.
JeongHeonK/c-sharp-custom-marketplace
Plugin Claude Code
Bundles 7 skills · 344 tokens together
A plugin for building C# and .NET applications, including WPF desktop interfaces, with modern language features and established design practices. WPF is a Microsoft framework for Windows desktop user interfaces.
Skill Claude CodeCodex
A workflow for moving numerical algorithms from MATLAB, a technical computing environment, into a C or C++ DLL that C# programs can call on Windows. It also checks that the converted results match MATLAB’s results.
linux-ur/discord-net-components-v2
Skill Claude CodeCodex
Reference and implementation guide for building Discord bot UIs with Discord.Net's Message Components V2 system (ComponentBuilderV2) in C#. Covers every V2-only component (Container, Section, Text Display, Thumbnail, Media Gallery, File, Separator), the shared V1/V2 interactive components (Action Row, Button…
iamBrzDev/enterprise-agent-skills
Skill Claude CodeCodex
Implements enterprise-grade testing strategies for .NET applications using xUnit, Moq, FluentAssertions, and WebApplicationFactory. Use when writing unit tests, integration tests, or API tests in .NET or C#, configuring test projects, deciding what to mock vs what to test with real dependencies, setting up shared test…
devbyray/github-copilot-starter
Skill Claude CodeCodex
.NET coding standards and conventions including project structure, dependency injection, and best practices. Use when working with .NET projects, ASP.NET Core, or when the user asks about .NET architecture, dependency injection, async patterns, or project organization.
DamienDoumer/aspnetcore-skills
Skill Claude CodeCodex
Use when scaffolding a new ASP.NET Core solution or adding features to an existing one that must follow Clean Architecture (Domain / Application / Infrastructure / API). Enforces MediatR-based use cases, Minimal APIs organised by feature, route constants, per-layer DI extension methods, command validation via a…
Atypical-Consulting/RoselineMCP
MCP server Claude CodeCodexCursor +2
MCP server "roseline-mcp" as configured in Atypical-Consulting/RoselineMCP. Launched with RoselineMCP.
syncfusion/blazor-ui-components-skills
Skill Claude CodeCodex
Implement Syncfusion Blazor Input components including FileUpload, TextBox, NumericTextBox, TextArea, Signature, RangeSlider, OtpInput, Rating, InputMask, and ColorPicker. Use this when working with file uploads, text entry, numeric values, multi-line text inputs, signatures, ratings, or color selection. This skill…
Plugin Claude Code
Bundles 16 skills, 15 agents, 3 hooks, 1 MCP server · 1,042 tokens together
.NET development plugin for Claude Code — Roslyn semantic analysis, DI/architecture/EF Core guards, 16 skills, convention-aware scaffolders, security/performance/refactoring agents, and project lifecycle commands.
Skill Claude CodeCodex
Best practices for building WPF desktop applications with C# and .NET. Use when working on WPF projects, .NET desktop apps, XAML UI, MVVM architecture, system tray apps, or any C# project using Windows Presentation Foundation.
MCP server Claude CodeCodexCursor +2
MCP server "TestAtlas.Mcp" as configured in Karzone/TestAtlas. Launched with TestAtlas.Mcp.
maxmash1/dotnet-react-starter-demo
Agent Claude Code
Scaffolds new .NET 8 API endpoints following organization standards — full vertical slice from DTO to Controller to Tests.
JeffPatterson-NCS/roslyn-rename
Command Claude Code
Perform a semantic C# symbol rename using Roslyn. Do NOT grep, text-search, or edit files manually — the roslyn-rename tool resolves all references via Roslyn's rename engine, identical to what VS or Rider would produce.
Plugin Claude Code
Bundles 3 skills · 234 tokens together
Unity / C# performance optimization and code standards skill library. Three skills: performance optimization, zero-GC engineering plans, and code standards & review.
Plugin Claude Code
Bundles 9 skills, 6 agents, 2 hooks, 1 MCP server · 2,838 tokens together
Compiler-aware C# code intelligence for .NET repos — Roslyn-backed symbol search, reference tracing, and edits validated against the compiler before they touch disk.
amusleh-spotware-com/terse-sharp
Skill Claude Code
Use when reading, searching, navigating, editing, refactoring, building or testing C#/.NET, XAML, .resx localization or Razor/Blazor in a solution served by the TerseSharp MCP server. Teaches which TerseSharp tool replaces which built-in, and how to drive all 88 of them, so a .cs file is never read whole, a symbol is…
Skill Claude CodeCodex
You have full control over Unity Editor via 24 MCP tools. This skill teaches you how to use them effectively.
microsoft/opentelemetry-distro-dotnet
Skill Claude CodeCodex ✓ vendor
Set up Microsoft.OpenTelemetry distro in a new .NET application. Use when adding observability to an agent, ASP.NET Core app, console app, or Agent Framework project. Covers package installation, exporter configuration, token resolver setup, baggage context, and instrumentation options.
cwoodruff/dotnet-claude-workshop-content
Agent Claude Code
Expert .NET code review specialist. Proactively reviews C# code for quality, architecture violations, and maintainability. Use immediately after writing or modifying code.
Skill Claude CodeCodex
.NET assembly decompiler CLI tool. Invoke when user needs to decompile DLL/EXE files, reverse engineer .NET assemblies, extract C# source code from compiled binaries, or analyze .NET metadata.
Skill Claude CodeCodex
Architecture rules, naming conventions, and CQRS handler patterns for this .NET solution. Load this whenever generating, reviewing, or refactoring C# code in this repository so output matches the existing codebase instead of generic patterns.
TripleZeroLabs/TripleZeroLabs.Os2
Skill Claude CodeCodex
Apply the OS2 WPF theme (TripleZeroLabs.Os2) correctly in any XAML or C# file. Activate when building or editing a WPF window, page, view, or UserControl; styling any WPF control (Button, TextBox, DataGrid, ComboBox, CheckBox, nav sidebar, tabs, dialog, banner); building a settings screen, form, dashboard, or toolbar…
chicongst/agent-skills-installer
Skill Claude CodeCodex
Safely refactor .NET / C# code at Senior Engineer level — diagnose code smells, classify risk (SAFE/RISKY/DANGEROUS), check the test safety net (or add characterization tests first), apply smallest-change-at-a-time for one smell, preserve behavior, match project convention. Use whenever the user wants to actually…
Skill Claude Code
A reference library for SqlSugar, a C#/.NET tool that maps program objects to database records and helps query or change databases. It routes questions to focused reference files about queries, writes, transactions, configuration, and database-specific behavior.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: