C# and .NET for Claude Code

1,209 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.

Also for Claude Code: anthropic · Git and workflow · Python · Web3 and blockchain · React · TypeScript · Go · docker · Rust · Localization · PostgreSQL · nextjs

dotnet-grpc

73

Postpartum-genushyacinthus29/dotnet-skills

Skill Claude CodeCodex

Build or review gRPC services and clients in .NET with correct contract-first design, streaming behavior, transport assumptions, and backend service integration.

not rated 13 10d ago A SkillSpector: pass 33 tokens original MIT

nxopen-mcp

74

mingfeng6684/nxopen-mcp

MCP server Claude CodeCodexCursor +2

MCP server that gives AI coding agents accurate NXOpen .NET API knowledge via hybrid retrieval. Runs locally from the nxopen-mcp Python package.

not rated 13 3mo ago A tokens not measured original MIT

roslyn-mcp

77

fnrhombus/winforms-mcp

MCP server Claude CodeCodexCursor +2

MCP server "roslyn-mcp" as configured in fnrhombus/winforms-mcp. Launched with dotnet-roslyn-mcp.

not rated 12 6mo ago A tokens not measured original MIT

creating-cqrs-query

78

djscheuf/agentic-dev-ecosystem-template

Skill Claude CodeCodex

How to create a new CQRS Query in the .NET backend API. Use this skill when implementing new read operations (GET endpoints), retrieving data without modifying state, creating query handlers, or working with MediatR queries. This includes creating the query class, handler, response DTO, authorization checks, and…

not rated 12 20d ago A 120 tokens original MIT

AspectGenerator

79

igor-tkachev/AspectGenerator

Skill Claude CodeCodex

Use this file as the compact agent-oriented guide for using and reviewing AspectGenerator in consuming projects.

not rated 11 4mo ago A 0 tokens original MIT

2oaJ/SwiftlyS2-Toolkit

Command Claude Code

A C# template for a SwiftlyS2 client-command hook, which intercepts commands sent by game clients before normal processing.

not rated 11 changed 1mo ago A 0 tokens copy · 100% MIT

sinch/skills

Skill Claude CodeCodex

Write C#/.NET Sinch Functions with the Sinch.Functions.Runtime NuGet package. Use when writing or editing a function controller: answering and controlling calls with Voice API v2, IVR menus, placing, bridging or transferring calls, realtime AI voice agents, SMS/WhatsApp/RCS webhooks, custom HTTP endpoints, dependency…

not rated 11 changed 24d ago A 94 tokens original Apache-2.0

csharp-lsp

83

zircote/csharp-lsp

Plugin Claude Code

Bundles 1 command · 9 tokens together

Claude Code plugin for C# development with OmniSharp LSP integration, 12 automated hooks for .NET builds, linting, formatting, and testing (xUnit, NUnit).

not rated 9 +1 2mo ago A tokens not measured original MIT

xaf-logic-explainer

84

peopleworks/XAFLogicExplainer

Plugin Claude Code

Bundles 1 skill · 167 tokens together

Query a specific DevExpress XAF application: its entities, controllers, actions, business rules and Model Editor customizations, extracted from source with Roslyn.

not rated 9 changed 1mo ago A tokens not measured original MIT

sherlock

85

jcucci/dotnet-sherlock-mcp

Plugin Claude Code

Bundles 1 skill · 83 tokens together

Sherlock MCP server plus a skill for inspecting .NET assemblies, types, members and call graphs.

not rated 9 changed 17d ago A tokens not measured original MIT

dotnet-template-mcp

86

YuliiaKovalova/dotnet-template-mcp

MCP server Claude CodeCodexCursor +2

MCP server "dotnet-template-mcp" as configured in YuliiaKovalova/dotnet-template-mcp. Launched with DotnetTemplateMCP -y.

not rated 8 6d ago A tokens not measured original MIT

sumo-mcp

87

HypaSMarty/SUMO-MCP-Server

MCP server Claude CodeCodexCursor +2

MCP server "sumo-mcp" as configured in HypaSMarty/SUMO-MCP-Server. Runs locally from the sumo-mcp Python package.

not rated 8 12d ago A tokens not measured original MIT

github

89

nachum-shmilovitz-66/claude-code-visualstudio

MCP server Claude CodeCodexCursor +2

GitHub's hosted MCP server: lets the agent search code, read and create issues and pull requests. Remote server at api.githubcopilot.com.

not rated 8 21d ago A tokens not measured copy · 92% MIT

sqlaugur

90

mbentham/SqlAugur

MCP server Claude CodeCodexCursor +2

MCP server "sqlaugur" as configured in mbentham/SqlAugur. Launched with SqlAugur.

not rated 8 +1 9d ago A tokens not measured original MIT

lschaffer/tealkit

Skill Claude CodeCodex

Comprehensive .NET skill for WinForms modernization, backend services refactoring, unit & integration test generation, and automated project upgrades.

not rated 8 changed 6d ago A 33 tokens original MIT

linuxchata/ai-playbook

Skill Claude Code

Defines the C# coding standards, patterns, and conventions to be applied consistently across all C# projects. Rules cover naming, structure, async patterns, null handling, dependency injection, logging, result patterns, and formatting. Apply these rules uniformly in all production code.

not rated 7 5mo ago A 61 tokens original MIT

netcoredbg-mcp

93

thebtf/netcoredbg-mcp

MCP server Claude CodeCodexCursor +2

MCP server for debugging C#/.NET code using netcoredbg. Runs locally from the netcoredbg-mcp Python package.

not rated 7 3d ago A tokens not measured original MIT

vela

94

dbhq-uk/vela-skill

Plugin Claude Code

Bundles 1 skill · 213 tokens together

Compiler-exact code search for Claude Code and Codex - where a symbol is defined, every reference, who calls it, and what a change breaks. It speaks SCIP, so one set of verbs answers across a whole repository: .NET is indexed natively through Roslyn, including the Razor Pages, MVC views and Blazor components that…

not rated 6 changed 27d ago A tokens not measured original MIT

unity-ui

95

batihandev/unity-mcp-skills

Skill Claude CodeCodex needs its repo

Use when users want to create Canvas, Button, Text, Image, or other UI elements.

not rated 6 12d ago A 22 tokens original MIT

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…

not rated 6 3mo ago A 74 tokens

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: