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

sharplens

49

pzalutski-pixel/sharplens-mcp

MCP server Claude CodeCodexCursor +2

67 semantic C#/.NET analysis tools via Roslyn: navigation, refactoring, codegen, audit. Runs locally from the sharplens-mcp npm package. Needs 3 environment variables to run.

not rated 37 5d ago A tokens not measured original MIT

dotnet-mcp

50

jongalloway/dotnet-mcp

MCP server Claude CodeCodexCursor +2

MCP server "dotnet-mcp" as configured in jongalloway/dotnet-mcp. Launched with Community.Mcp.DotNet. Needs 2 environment variables to run.

not rated 37 +1 1mo ago A tokens not measured original MIT

dotnet-performance

51

wieslawsoltes/Performance-Skill

Skill Claude CodeCodex

Evidence-first performance engineering workflow for coding agents combining portable .NET diagnostics with platform-native profiling, BenchmarkDotNet, application benchmarking, statistical validation, deployment, container, graphics, and GPU procedures.

not rated 36 2mo ago A 42 tokens original MIT

fuse

52

Litenova-Solutions/Fuse

MCP server Claude CodeCodexCursor +2

MCP server "fuse" as configured in Litenova-Solutions/Fuse. Launched with Fuse.

not rated 36 4d ago A tokens not measured original Apache-2.0

vvvv-custom-nodes

53

tebjan/vvvv-skills

Skill Claude CodeCodex

Helps write C# node classes for vvvv gamma — the [ProcessNode] lifecycle pattern, Update() method, out parameters, pin configuration, change detection, stateless operation nodes, the public-API import model, and service consumption via NodeContext (IFrameClock, Game access, logging). Use when writing a node class…

not rated 34 +2 changed 5d ago A 152 tokens

roslyn-mcp

54

JoshuaRamirez/RoslynMcpServer

Plugin Claude Code

Bundles 1 command · 10 tokens together

Roslyn-powered C# refactoring MCP server — 50 tools for code navigation, analysis, generation, and refactoring across entire .NET solutions.

not rated 31 changed 7d ago A tokens not measured original MIT

dotnet-debugging

56

jkolo/debug-mcp

Skill Claude CodeCodex

Debug .NET applications using debug-mcp MCP tools — launch processes, set breakpoints, step through code, inspect variables, evaluate expressions, and analyze exceptions. Use this skill when debugging .NET/C# applications, investigating runtime behavior, diagnosing exceptions, inspecting object state, or performing…

not rated 29 1mo ago A 70 tokens AGPL-3.0

officeagent

57

ilia-sokolov/OfficeAgent.NET

Plugin Claude Code

Bundles 2 skills, 1 MCP server · 148 tokens together

Inspect and edit the Word, PowerPoint and Excel files in your project: Claude previews every change before it is saved, and Word edits arrive as tracked changes you accept or reject in Word.

not rated 27 today A tokens not measured original MIT

crud-generator

58

thapaliyabikendra/ai-artifacts

Skill Claude Code

Generate complete CRUD application services for ABP Framework following DDD patterns. Creates interface in Contracts layer, implementation in AppServices, and DTOs in Contracts. Use when: (1) creating new entity services, (2) scaffolding CRUD operations, (3) implementing standard ABP service patterns, (4) accelerating…

not rated 24 7mo ago A 70 tokens original Apache-2.0

docs-site

59

VPDPersonal/Aspid.FastTools

Skill Claude Code

How Aspid.FastTools documentation is authored and published — Markdown in Website/ (docs/, tutorials/, Russian twins and the Russian changelog in i18n/ru/) plus the root CHANGELOG.md, read by GitHub and the Docusaurus site, deployed to GitHub Pages; the UPM package ships only a README and the samples overview, and…

not rated 24 changed today A SkillSpector: warn 116 tokens original MIT

F-U-S-E-E/FuseDevelopmentGroup

Skill Claude Code

Enable nullable reference types in a C# project and systematically resolve all warnings. USE FOR: adopting NRTs in existing codebases, file-by-file or project-wide migration, fixing CS8602/CS8618/CS86xx warnings, annotating APIs for nullability, cleaning up null-forgiving operators, upgrading dependencies with new…

not rated 23 3d ago A 142 tokens AGPL-3.0

lumeo

62

Brain2k-0005/Lumeo

Skill Claude CodeCodex

Use when building or editing a Blazor UI that uses the Lumeo component library (the Lumeo NuGet package and its satellites Lumeo.Charts / Lumeo.DataGrid / Lumeo.Editor / Lumeo.Scheduler / Lumeo.Gantt / Lumeo.Motion / Lumeo.Flow), or when the user mentions Lumeo components (Button, DataGrid, Sheet, Dialog, Tabs…

not rated 22 changed 27d ago A SkillSpector: warn 133 tokens original MIT

codemap-mcp

63

bbajt/csharp-code-map

MCP server Claude CodeCodexCursor +2

MCP server "codemap-mcp" as configured in bbajt/csharp-code-map. Launched with codemap-mcp. Needs 1 environment variable to run.

not rated 22 20d ago A tokens not measured

oci-skills

64

acedergren/oci-agent-skills

Plugin Claude Code

Bundles 13 skills · 687 tokens together

Complete OCI automation skills covering compute, networking, databases, monitoring, secrets, GenAI, IAM, IaC, FinOps, and best practices.

not rated 22 6mo ago A tokens not measured original MIT

unity-coding-skills

65

nowsprinting/unity-coding-skills

Plugin Claude Code

Bundles 10 skills, 3 agents · 1,135 tokens together

Skills and subagents for developing Unity projects with Claude Code — maintainable test design and implementation, test-first workflow, coding guidelines, scene editing, and more.

not rated 20 changed 6d ago A tokens not measured original Unlicense

asqi-carter/ftx-mcp

Skill Claude CodeCodex

Register NetLogic (C#) into the live model, compile-check it, operate the design-time bridge lifecycle (start it, when new bridge code needs a Studio reopen, run design-time [ExportMethod]s SAFELY), restart the MCP service, and deploy. Use when adding code-behind, running generators/builders, when the bridge is…

not rated 17 +1 changed 7d ago A 96 tokens

magna-nz/aspnetcore-debugger-mcp

MCP server Claude CodeCodexCursor +2

MCP server "aspnetcore-debugger-mcp" as configured in magna-nz/aspnetcore-debugger-mcp. Launched with AspNetCoreDebuggerMcp.

not rated 15 1mo ago A tokens not measured original MIT

mailfathom

68

Krzysztof318/MailFathom

MCP server Claude CodeCodexCursor +2

Security-first, self-hosted email archive with search, cited answers, and sending for AI agents. Remote server at {mailfathom_host}.

not rated 15 11d ago A tokens not measured original AGPL-3.0

flexcel-net

69

tmssoftware/skills

Skill Claude CodeCodex

Use when writing C# / VB.NET / F# code that reads, writes, manipulates, or exports Excel (.xlsx / .xls) files, generates PDF or HTML from Excel, or produces data-driven reports with FlexCel Studio for .NET (TMS Software). Triggers include Excel/xlsx from C#, XlsFile, FlexCelReport, FlexCelPdfExport, FlexCelHtmlExport…

not rated 14 6mo ago A 126 tokens

MAF Migration Agent

70

joslat/maf-doctor

Agent Claude Code

Use when migrating a .NET codebase to Microsoft Agent Framework (MAF) 1.3.0. Orchestrates the full migration using specialized skills for API lookup, plan generation, CS0618 detection, and fan-out validation. Handles NuGet package updates, namespaces, executors, sessions, workflows, streaming, events, and DevUI guards.

not rated 14 4d ago A 78 tokens original MIT

autocad-dotnet

71

joseguiaCES/autocad-dotnet-claude-skill

Plugin Claude Code

Bundles 1 skill · 115 tokens together

Comprehensive AutoCAD .NET API reference, patterns, and gotchas for plugin development. Covers AutoCAD 2025 and 2026 (both net8.0) with full API index auto-generated from official SDK documentation.

not rated 14 +2 6mo ago A tokens not measured original MIT

vs-token-safer

72

JSungMin/vs-token-safer

Plugin Claude Code

Bundles 3 skills, 6 commands, 1 agent, 1 plugin · 685 tokens together

Sits between Claude Code and your codebase and hands back a short file:line list instead of dumping source into the chat. It uses a real language server when it can (clangd / Roslyn / tsserver / pyright), tree-sitter when there's no toolchain, and a fuzzy search built from your repo's own naming when you don't know…

not rated 13 changed 24d ago A tokens not measured original MIT

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: