849 mods tagged dotnet that install into Codex, 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.
Skill Claude CodeCodex ✓ vendor
Guide for developing LLM agents based on PuerTsAgent framework — covers resource directory structure, system-prompt, skills, builtin modules, and best practices.
Skill Claude CodeCodex needs its repo ✓ vendor
Generate the code from typespec for C#. Parameter: C# SDK repository root location .
Skill Codex
Grace repository workflow, architecture, and implementation guidance. Use when working in a Grace repo or on Grace planning, GitHub issue orchestration, F#/.NET code, Orleans actors, Giraffe HTTP APIs, SDK or CLI surfaces, DTOs/events/parameters, authorization, webhooks and approval requests, manifest-backed storage…
Skill Claude CodeCodex
Use this skill before answering, planning, or editing any MSTest 3.x-to-4.x upgrade or post-upgrade failure. Triggers include "MSTest v4 breaking changes"; CS0507/CS0103/CS1061/CS1615; ExecuteAsync, CallerInfo, DisplayName, or custom TestMethodAttribute; ClassCleanupBehavior; ContainsKey; ThrowsExactly or…
platformplatform/PlatformPlatform
MCP server Claude CodeCodexCursor +2
One of 4 in .mcp.json
Azure MCP Server - Model Context Protocol implementation for Azure. Runs locally from the @azure/mcp npm package. Needs 2 environment variables to run.
Skill Claude CodeCodex
Legacy DevFlow debug skill. USE FOR: maui-ai-debugging, maui devflow, screenshots, visual tree, Blazor CDP, simulator/emulator debugging. DO NOT USE FOR: setup, desktop automation, AppleScript, host xdotool.
MCP server Claude CodeCodexCursor +2
MCP server "tik4net-mcp" as configured in danikf/tik4net. Launched with powershell -NoLogo -NoProfile -NonInteractive -ExecutionPolicy Bypass -File Tool.
MCP server Claude CodeCodexCursor +2 ✓ vendor
MCP server "awesome-copilot" as configured in microsoft/mcp-dotnet-samples. Runs in Docker (ghcr.io/microsoft/mcp-dotnet-samples/awesome-copilot:1.0.2026082702).
SebastienDegodez/copilot-instructions
Skill Claude CodeCodex
Use when domain logic leaks into API/Infrastructure, project references violate layer boundaries, or you need to decide between CQS (always), CQRS bus (complex domains), and DDD patterns (invariants and events).
Skill Claude CodeCodex
This skill provides guidance for AI agents working with the Hex1b TUI (Terminal User Interface) library and its MCP diagnostic tools.
Skill Codex
Review, modify, test, document, or release the DisCatSharp repository. Use for DisCatSharp source changes, API additions and migrations, Discord payload models, serialization, command synchronization, Gateway dispatch, REST behavior, analyzer work, multi-target testing, DocFX generation, release notes, and repository…
Skill Claude CodeCodex
Guidance for semantic-first Windows automation with the bundled windows-mcp server. Use when automating desktop apps, choosing UI Automation vs screenshots, or handling DPI and multi-monitor issues.
Skill Claude CodeCodex
Guide for creating effective skills, adding skill references, skill scripts or optimizing existing skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Codex's capabilities with specialized knowledge, workflows, frameworks, libraries or plugins usage, or…
Skill Claude CodeCodex
Use when processing AEC/BIM 3D data in .NET 8 — mesh generation and transformation, SIMD-accelerated math, IFC/STEP/PLY to glTF/GLB/VIM conversion, plugin development. Ara3D-SDK: high-performance .NET 3D geometry and BIM library suite.
MCP server Claude CodeCodexCursor +2
One of 2 in .mcp.json
MCP server "starling", hosted remotely at 127.0.0.1, as configured in starling-browser/starling.
Skill Claude CodeCodex needs its repo
Prepare and publish Perigon.CLI patch releases, including versioning, release notes, bilingual docs, validation, and the nuget-branch CI handoff.
Skill Claude CodeCodex
Use this skill when a user wants to reproduce, adapt, or compare a ChartForgeX visual example.
Skill Claude CodeCodex
Automate Microsoft PowerPoint on Windows via CLI. Use when creating, reading, or modifying PowerPoint presentations from scripts, CI/CD, or coding agents. Supports Slides, Shapes, Text, Charts, Animations, Transitions. Triggers: PowerPoint, presentation, pptx, pptcli, CLI automation.
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.
MCP server Claude CodeCodexCursor +2
MCP server "fuse" as configured in Litenova-Solutions/Fuse. Launched with Fuse.
MCP server Claude CodeCodexCursor +2
MCP server "tiacommander-mcp" as configured in a4webdev/tiacommander-mcp. Launched with https://github.com/a4webdev/tiacommander-mcp/releases/download/v2.26.3m/TiaComma.
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.
kevintsengtw/dotnet-testing-agent-skills
Skill Claude CodeCodex
A guide for advanced TUnit testing in .NET. TUnit is a testing framework; the guide covers tests driven by data, dependency injection, integration tests, retries, time limits, and filtering.
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…
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: