dotnet-architect

dotnet-architect is a skill for Claude Code, Codex from tqnonline/agent-forge. It costs 151 tokens per session (2,244 once invoked), scanned A, original, BSD-3-Clause.

A specialist guide for designing software with C#, .NET, ASP.NET Core, Entity Framework Core, Aspire, and Blazor. It covers how the application is structured, how it handles data, and how it is tested.

In plain words
What is it for?
Use it for .NET and C# implementation guidance, web APIs, Minimal APIs, Blazor applications, database access with Entity Framework Core, distributed applications with Aspire, and testing strategy.
Why use it?
It helps developers make consistent choices across a .NET application instead of deciding each framework, API, data, or testing question from scratch. It also separates application design from the cloud infrastructure that hosts it.

Skill for Claude CodeCodex

Part of the msft-arch plugin — 29 skills, 4 commands, 2 agents shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/tqnonline/agent-forge/dotnet-architect
Any agent
npx skills add tqnonline/agent-forge --skill dotnet-architect
Clone the repo
git clone --depth 1 https://github.com/tqnonline/agent-forge

Made for: Claude Code, Codex.

Or install msft-arch, the plugin that ships this one along with the rest of its 29 skills, 4 commands, 2 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dotnet-architect

README.md
[![agentmods](https://agentmods.dev/badge/skills/tqnonline/agent-forge/dotnet-architect.svg)](https://agentmods.dev/skills/tqnonline/agent-forge/dotnet-architect)
Your own site
<a href="https://agentmods.dev/skills/tqnonline/agent-forge/dotnet-architect"><img src="https://agentmods.dev/badge/skills/tqnonline/agent-forge/dotnet-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 151 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,244 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00151 $0.02244
Opus 5 $0.00076 $0.01122
Sonnet 5 $0.00030 $0.00449
Haiku 4.5 $0.00015 $0.00224

Measured 5d ago against content hash 1db09abd2881, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dotnet-architect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/msft-arch/skills/dotnet-architect/SKILL.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

.NET Architecture Specialist

Version: 1.0 | Role: .NET Implementation Architect | Stack: C# / ASP.NET Core / EF Core / Aspire / Blazor

You design and review .NET implementation stacks: language patterns, API surface, data access, distributed orchestration, and test strategy. Use Microsoft Learn MCP (microsoft_docs_search, microsoft_docs_fetch) to verify .NET 8/9 capabilities, runtime behavior, and SDK changes before finalising decisions; pair with Context7 MCP (resolve-library-id, query-docs) for NuGet package-level documentation. Read shared standards before starting: standards/references/coding-stack/csharp-standards.md, standards/references/coding-stack/ef-core-checklist.md, standards/references/paradigm/functional-programming.md, standards/references/tooling/repo-baseline.md. Azure infrastructure choices (SKUs, networking, identity provisioning) belong to azure-architect and the horizontal tier. This skill owns what runs inside the process, not what hosts it.

Design Principles

  • .NET LTS only (8 / 9). No .NET Framework greenfield. New work targets net8.0 or net9.0; <LangVersion> pinned explicitly.
  • Bun > Node for any TypeScript-side tooling/scripting in mixed-stack projects. Node only when a hard ecosystem dependency prevents it.
  • DuckDB > SQL Server for embedded analytics and local-first apps. EF Core + SQL Server for transactional OLTP; DuckDB for analytical queries that don't need a server process.
  • Result<T> / OneOf<T,E> over exceptions for control flow. Exceptions only for truly exceptional, unrecoverable conditions. Never use them for validation, not-found, or conflict paths.
  • Constructor injection only. Service locator is an anti-pattern. Never resolve from IServiceProvider inside domain or application layer classes.
  • EF Core compiled queries for hot paths; AsNoTracking() default for reads. Change tracking incurs measurable overhead; opt in deliberately.
  • TDD with xUnit + FluentAssertions + Verify; integration tests via WebApplicationFactory. Unit tests must not touch the network or file system. Integration tests own the full HTTP pipeline.
  • Managed Identity for any Azure resource access. Never inline connection strings or service principal secrets. DefaultAzureCredential in application code; Key Vault references in configuration.
  • ASP.NET Core: Minimal APIs > Web API > MVC (in that order, for new work). MVC is reserved for large controller hierarchies with existing investment.
  • Blazor Server > WASM for internal apps; WASM only when offline / public-facing static hosting required; Hybrid for mobile/desktop.
  • Aspire for distributed-app orchestration in dev; not a production replacement for K8s/AKS. Aspire wires service discovery, telemetry, and resource management in the inner loop; azd or Terraform/AVM carry it to production.

Read the full file on GitHub · 136 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 136 lines · 151 tokens per session scan A 1db09abd2881

Subscribe to this mod's changes

dotnet-architect is a skill published in the GitHub repository tqnonline/agent-forge (2 stars, last pushed 3mo ago), licensed BSD-3-Clause. It adds 151 tokens to every session and 2,244 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

dotnet-reverse

.NET / C# 二进制逆向。当目标是 .NET assembly(PE 头含 CLR、.exe/.dll 托管程序)、C# 编译产物(含 NativeAOT)、红队 Sharp 工具(Rubeus / SharpHound / SharpHound 等)、.NET 混淆程序(ConfuserEx / SmartAssembly / Babel / Eazfuscator)、.NET loader / info-stealer / 套壳 malware 时使用。优先用 dnSpyEx + de4dot,需要 AI 直接操作时联动 dnSpy MCP。不用于纯 native 二进制(走 reverse-engineering /…

zhaoxuya520/reverse-skill · 144 tokens

build-and-test

How to build and test .NET projects in the Agent Framework repository. Use this when verifying or testing changes.

microsoft/agent-framework · 26 tokens

agui-dotnet-streaming-chat

Get started with the AG-UI .NET SDK: bootstrap and run your first streaming-chat app (client + server) with the AG-UI .NET NuGet packages (AGUI.Client, AGUI.Server, AGUI.Formatting, AGUI.Abstractions). USE FOR: which packages to install and how to wire them; constructing an AGUIChatClient against an endpoint and…

ag-ui-protocol/ag-ui · 223 tokens

agui-dotnet-wire-types

Add or modify a wire/protocol type in the AG-UI .NET SDK AGUI.Abstractions package — a new event, message, or content-part type, the AOT source-gen serializer context, or a polymorphic JSON converter, keeping it AOT-safe, JSON-wire-compatible with the TypeScript reference, and PublicAPI-clean. USE FOR: adding an AG-UI…

ag-ui-protocol/ag-ui · 174 tokens

azure-mgmt-apicenter-dotnet

Azure API Center SDK for .NET. Centralized API inventory management with governance, versioning, and discovery. Use for creating API services, workspaces, APIs, versions, definitions, environments, deployments, and metadata schemas. Triggers: "API Center", "ApiCenterService", "ApiCenterWorkspace", "ApiCenterApi", "API…

microsoft/skills · 97 tokens

migrate-xunit-to-xunit-v3

Migrate .NET test projects from xUnit.net v2 to xunit.v3 and fix v3 breaks. Use for package/CPM conversion, OutputType=Exe, preserving the VSTest or MTP runner (including projects currently using YTest.MTP.XUnit2), incompatible TFMs, async void tests, string-to-Type attributes, custom Fact/Theory/BeforeAfterTest…

dotnet/skills · 149 tokens