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Agent skill

Archunitnet

by managedcode in managedcode/dotnet-skills

Use the open-source free ArchUnitNET library for architecture rules in .NET tests.

MITAuto-check passedAgent Workflows

Install Archunitnet

skills CLI
$ npx skills add managedcode/dotnet-skills --skill archunitnet -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install managedcode/dotnet-skills archunitnet --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/managedcode/dotnet-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/catalog/Libraries/ArchUnitNET/skills/archunitnet .claude/skills/archunitnet && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
archunitnet
GitHub stars
486
Token cost
~1.2k tokens
SKILL.md length
513 words
Files
5 (incl. references)
Skills in repo
81
Repo updated
First seen
Licence
MIT

At a glance

Use the open-source free ArchUnitNET library for architecture rules in .NET tests.

  • Works in 3 steps: Read the nearest AGENTS.md and confirm… → Run this skill's Workflow through the… → Return the Required Result Format with…
  • A repo needs richer architecture assertions than lightweight fluent rule libraries usually provide
  • SKILL.md covers Trigger On, Value, Do Not Use For and Inputs, plus 8 more sections
  • Calls dotnet and rg

What it does

Archunitnet is an agent skill from managedcode/dotnet-skills. Use the open-source free ArchUnitNET library for architecture rules in .NET tests. Use when a repo needs richer architecture assertions than lightweight fluent rule libraries usually provide. USE FOR: the repo uses or wants ArchUnitNET; architecture testing needs richer modeling than simple dependency checks. DO NOT USE FOR: the lightest possible architecture rule checks. INVOKES: inspect the repository context, edit targeted files, and run relevant build, test, lint, or validation commands when changes are made.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `manifest.json`, `references/archunitnet.md` and `references/examples.md`). Compatibility notes: Requires a .NET test project; supports dedicated integrations for xUnit, xUnit v3, MSTest, TUnit, and others where available.

It sits in Agent Workflows, covering Codebase knowledge for agents. It works with .NET. The repository describes itself as: Installable .NET skill catalog and CLI for Codex, Claude Code, GitHub Copilot, and Gemini. The licence is MIT.

When your agent uses it

  • A repo needs richer architecture assertions than lightweight fluent rule libraries usually provide
  • : the repo uses
  • Wants ArchUnitNET
  • Architecture testing needs richer modeling than simple dependency checks

Example prompts

  • “/archunitnet”

Requirements

  • Compatibility (from SKILL.md): Requires a .NET test project; supports dedicated integrations for xUnit, xUnit v3, MSTest, TUnit, and others where available.

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Read the nearest AGENTS.md and confirm scope and constraints.
  2. Run this skill's Workflow through the Ralph Loop until outcomes are acceptable.
  3. Return the Required Result Format with concrete artifacts and verification evidence.

What it can do on your machine

Read from SKILL.md and the folder at commit 535dd55. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • dotnet
    • rg

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • managed-code.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires a .NET test project; supports dedicated integrations for xUnit, xUnit v3, MSTest, TUnit, and others where available.

    From compatibility in the SKILL.md frontmatter.

Context cost

Archunitnet loads about 1.2k tokens when it runs, and up to ~5.4k if it reads all its reference files. Until then it costs about 133 tokens; SKILL.md has 513 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~133
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~5.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from managedcode/dotnet-skills at commit 535dd55, republished under its MIT licence (© managedcode). 513 words, ~1,223 tokens.

Download SKILL.mdSave it as .claude/skills/archunitnet/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
archunitnet
description
Use the open-source free `ArchUnitNET` library for architecture rules in .NET tests. Use when a repo needs richer architecture assertions than lightweight fluent rule libraries usually provide. USE FOR: the repo uses or wants ArchUnitNET; architecture testing needs richer modeling than simple dependency checks. DO NOT USE FOR: the lightest possible architecture rule checks. INVOKES: inspect the repository context, edit targeted files, and run relevant build, test, lint, or validation commands when changes are made.
compatibility
Requires a .NET test project; supports dedicated integrations for xUnit, xUnit v3, MSTest, TUnit, and others where available.

ArchUnitNET for .NET

Trigger On

  • the repo uses or wants ArchUnitNET
  • architecture testing needs richer modeling than simple dependency checks

Value

  • produce a concrete project delta: code, docs, config, tests, CI, or review artifact
  • reduce ambiguity through explicit planning, verification, and final validation skills
  • leave reusable project context so future tasks are faster and safer

Do Not Use For

  • the lightest possible architecture rule checks

Inputs

  • the nearest AGENTS.md
  • target assemblies
  • architecture boundaries and naming conventions

Quick Start

  1. Read the nearest AGENTS.md and confirm scope and constraints.
  2. Run this skill's Workflow through the Ralph Loop until outcomes are acceptable.
  3. Return the Required Result Format with concrete artifacts and verification evidence.

Workflow

  1. Load the architecture once per test assembly where possible.
  2. Encode a small number of durable, high-value architecture rules first.
  3. Use the test-framework-specific integration package that matches the repo.
  4. Enforce clear architectural boundaries between agent loops, tools, and domain models as detailed in building AI agents with .NET.

Bootstrap When Missing

If ArchUnitNET is not configured yet:

  1. Detect existing setup:
    • rg -n "TngTech\\.ArchUnitNET" -g '*.csproj' .
  2. Add packages to the architecture test project:
    • dotnet add TEST_PROJECT.csproj package TngTech.ArchUnitNET
    • add one framework bridge package: TngTech.ArchUnitNET.xUnit, TngTech.ArchUnitNET.xUnitV3, TngTech.ArchUnitNET.MSTestV2, or TngTech.ArchUnitNET.TUnit
  3. Add at least one durable boundary rule test.
  4. Wire architecture tests into the standard test command in AGENTS.md and CI.
  5. Run dotnet test TEST_PROJECT.csproj and return status: configured or status: improved.
  6. If NetArchTest already covers the same boundary policy and no gap exists, return status: not_applicable.

Deliver

  • architecture tests with richer domain and type modeling
  • architecture-rule commands wired into repo test flow and CI expectations

Validate

  • architecture load cost is reasonable for the suite
  • rules are stable and tied to real boundaries
Show full SKILL.md (221 more words)Show less

Ralph Loop

Use the Ralph Loop for every task, including docs, architecture, testing, and tooling work.

  1. Plan first (mandatory):
    • analyze current state
    • define target outcome, constraints, and risks
    • write a detailed execution plan
    • list final validation skills to run at the end, with order and reason
  2. Execute one planned step and produce a concrete delta.
  3. Review the result and capture findings with actionable next fixes.
  4. Apply fixes in small batches and rerun the relevant checks or review steps.
  5. Update the plan after each iteration.
  6. Repeat until outcomes are acceptable or only explicit exceptions remain.
  7. If a dependency is missing, bootstrap it or return status: not_applicable with explicit reason and fallback path.
Required Result Format
  • status: complete | clean | improved | configured | not_applicable | blocked
  • plan: concise plan and current iteration step
  • actions_taken: concrete changes made
  • validation_skills: final skills run, or skipped with reasons
  • verification: commands, checks, or review evidence summary
  • remaining: top unresolved items or none

For setup-only requests with no execution, return status: configured and exact next commands.

Load References

Example Requests

  • "Use ArchUnitNET for layered architecture tests."
  • "Set up ArchUnitNET with xUnit or MSTest."

© managedcode, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (references) in catalog/Libraries/ArchUnitNET/skills/archunitnet of managedcode/dotnet-skills.

  • SKILL.md
  • manifest.json
  • references/archunitnet.md
  • references/examples.md
  • references/patterns.md

Open the folder on GitHubat commit 535dd55

Compare with similar skills

Archunitnet next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Archunitnet compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Archunitnet this skillmanagedcode/dotnet-skills486—~1.2kAutomated safety check: PassMIT
Microsoft Skill CreatorMicrosoftDocs/mcp1.9k3 repos~2.1kAutomated safety check: PassCC-BY-4.0
Copilot Session Failure Analysisdotnet/maui23k—~3.4kAutomated safety check: PassMIT
ccc Semantic Code Searchcocoindex-io/cocoindex-code2.7k—~938Automated safety check: PassApache-2.0
Context Engineeringabashev/vfs-s31069 repos~2.6kAutomated safety check: NotesApache-2.0
Repomix Codebase Packeryamadashy/repomix29k—~1.3kAutomated safety check: NotesMIT

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Works with

Categories

Questions about Archunitnet

What does Archunitnet do?

Use the open-source free ArchUnitNET library for architecture rules in .NET tests. Archunitnet is an agent skill from managedcode/dotnet-skills.NET tests.

When should I use Archunitnet?

Archunitnet fits situations like: A repo needs richer architecture assertions than lightweight fluent rule libraries usually provide; : the repo uses; wants ArchUnitNET; architecture testing needs richer modeling than simple dependency checks.

How do I install Archunitnet in Claude Code?

Run `npx skills add managedcode/dotnet-skills --skill archunitnet -a claude-code`. Or copy the skill folder (catalog/Libraries/ArchUnitNET/skills/archunitnet in managedcode/dotnet-skills) into .claude/skills/archunitnet in your project. Claude Code loads it when a task matches its description.

How do I install Archunitnet in Codex?

Run `npx skills add managedcode/dotnet-skills --skill archunitnet -a codex`. Or copy the skill folder (catalog/Libraries/ArchUnitNET/skills/archunitnet in managedcode/dotnet-skills) into .agents/skills/archunitnet in your project. Codex loads it when a task matches its description.

Can I use Archunitnet in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add managedcode/dotnet-skills --skill archunitnet -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/archunitnet, .gemini/skills/archunitnet, .github/skills/archunitnet and .opencode/skills/archunitnet in your project.

What does Archunitnet need to run?

Going by SKILL.md and its folder, Archunitnet needs the command-line tools its instructions call (dotnet and rg). Compatibility (from SKILL.md): Requires a .NET test project; supports dedicated integrations for xUnit, xUnit v3, MSTest, TUnit, and others where available..

Does Archunitnet access the network?

SKILL.md names 1 domain. As links in the text: managed-code.com. This is read from the text; nothing was executed.

Is Archunitnet safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Archunitnet use?

Archunitnet is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Archunitnet use?

About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.1k tokens, read only when the agent opens those files.

What are the alternatives to Archunitnet?

Skills that share tags, products or a category with Archunitnet: Microsoft Skill Creator (MicrosoftDocs/mcp, 1.9k stars), Copilot Session Failure Analysis (dotnet/maui, 23k stars), ccc Semantic Code Search (cocoindex-io/cocoindex-code, 2.7k stars) and Context Engineering (abashev/vfs-s3, 106 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Archunitnet?

managedcode (a GitHub organization) maintains it in managedcode/dotnet-skills, which has 486 GitHub stars. The repository holds 81 skills in this directory. The repository was last updated on October 7, 2026.

Source: managedcode/dotnet-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.