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dotnet-xunit

dotnet-xunit is a skill for Claude Code, Codex from Postpartum-genushyacinthus29/dotnet-skills. It costs 75 tokens per session (1,259 once invoked), scanned A, a copy of xunit, MIT.

A guide for writing and running automated .NET tests with xUnit, a testing framework that supports checks such as facts and data-driven theories.

In plain words
What is it for?
Use it to add, repair, run, debug, or review xUnit tests in .NET projects and continuous-integration pipelines.
Why use it?
It removes uncertainty about which xUnit version, command, test runner, and project settings are in use.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions AGENTS.md.

not rated 10repo +1 yesterday A scan 75 tokens copy · 92% MIT

Good fit Use it to add, repair, run, debug, or review xUnit tests in .NET projects and continuous-integration pipelines.

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Install with agentmods
npx agentmods add skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-xunit
View source ↗ Postpartum-genushyacinthus29/dotnet-skills
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.

Any agent
npx skills add Postpartum-genushyacinthus29/dotnet-skills --skill dotnet-xunit
Clone the repo
git clone --depth 1 https://github.com/Postpartum-genushyacinthus29/dotnet-skills

Made for: Claude Code, Codex.

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-xunit

README.md
[![agentmods](https://agentmods.dev/badge/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-xunit/github.svg)](https://agentmods.dev/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-xunit)
Your own site
<a href="https://agentmods.dev/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-xunit"><img src="https://agentmods.dev/badge/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-xunit/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for dotnet-xunit

Your own site · 80×15
<a href="https://agentmods.dev/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-xunit"><img src="https://agentmods.dev/badge/skills/postpartum-genushyacinthus29/dotnet-skills/dotnet-xunit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,259 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 92% copy Near-identical to another mod 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 5.1 $0.00075 $0.01259
Opus 5 $0.00037 $0.00629
Sonnet 5 $0.00015 $0.00252
Haiku 4.5 $0.00007 $0.00126

Measured 8d ago against content hash 84c16c837487, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

dotnet-xunit 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 8d 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.

Origin

This is a copy

92% identical to xunit — 12 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/dotnet-xunit/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

xUnit.net

Trigger On

  • the repo uses xUnit v2 or xUnit v3
  • you need to add, run, debug, or repair xUnit tests
  • the team is unsure whether a project is using VSTest or Microsoft.Testing.Platform

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

  • TUnit projects
  • MSTest projects
  • generic test strategy with no xUnit-specific mechanics

Inputs

  • the nearest AGENTS.md
  • the test project file and package references
  • the active runner model for the test project

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. Detect the active xUnit model before changing commands:
    • xunit usually means v2
    • xunit.v3 means v3
    • xunit.runner.visualstudio plus Microsoft.NET.Test.Sdk usually means VSTest compatibility is enabled
    • TestingPlatformDotnetTestSupport or UseMicrosoftTestingPlatformRunner means Microsoft.Testing.Platform is in play
  2. Read the repo's real test command from AGENTS.md. If the repo has no explicit command yet, start with dotnet test PROJECT_OR_SOLUTION.
  3. Keep the runner model consistent:
    • xUnit v2 usually runs through VSTest
    • xUnit v3 can run as a standalone executable with dotnet run
    • xUnit v3 can also integrate with Microsoft.Testing.Platform
    • do not mix VSTest-only switches into Microsoft.Testing.Platform runs
  4. Run the narrowest useful scope first:
    • one project
    • one class
    • one trait
    • one method
  5. Prefer [Theory] for stable data-driven coverage and [Fact] for single-path invariant checks.
  6. Keep xunit.analyzers enabled when present. Fix analyzer findings instead of muting them casually.

Read the full file on GitHub · 127 lines

Files

What ships with it

3 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. 8d ago First seen · 127 lines · 75 tokens per session scan A 84c16c837487

Subscribe to this mod's changes

dotnet-xunit is a skill published in the GitHub repository Postpartum-genushyacinthus29/dotnet-skills (10 stars, last pushed yesterday), licensed MIT. It adds 75 tokens to every session and 1,259 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to xunit, differing in 12 lines, and is treated as a copy.

C# and .NETLanguagesTestingUnit testingagent-skillsai-agentsalexa-skills-sdkaws-lambdaazure-openaicode-analysis-true
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