language-csharp SKILL.md skillA
language-csharp from lugassawan/swe-workbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add lugassawan/swe-workbench/language-csharp@git:20260828.71a6399Pins git:20260828.71a6399 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- lugassawan/swe-workbench
- Path
skills/language-csharp/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260828.71a6399, committed Aug 28, 2026
- First version recorded
- May 29, 2026
- Size
- 5,647 bytes
- Repository stars
- 3
- License
- MIT
C# and .NET idioms — .NET 8 LTS, C# NRT, records, value semantics, switch expressions, async/await, Task, ValueTask, CancellationToken, ConfigureAwait, IOptions<T>, LINQ, Span<T>, ArrayPool, hot path, allocation profiling, and performance. Auto-load when working with .cs files, .csproj, .sln, Directory.Build.props, or when the user mentions C#, dotnet, .NET 8, C# NRT, NRT, records, value semantics, switch expressions, Task, ValueTask, CancellationToken, ConfigureAwait, LINQ, Span, or hot-path…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# C# / .NET
## .NET 8 project shape
- Prefer SDK-style projects with explicit `TargetFramework` (`net8.0`) and shared defaults in `Directory.Build.props`.
- Keep nullable reference types enabled for new code: `<Nullable>enable</Nullable>`.
- Use `ImplicitUsings` when the repository already does; avoid hand-maintaining noisy common imports.
- Keep application, domain, infrastructure, and test projects separate when boundaries are real, not just for ceremony.
```xml
<PropertyGroup>
<TargetFramework>net8.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
```
## Nullable reference types
- Treat warnings as design feedback, not noise. Model absence with `T?`, `required`, or a domain type.
- Validate nullable inputs at boundaries; keep internals non-null where possible.
- Use `ArgumentNullException.ThrowIfNull(value)` for guard clauses.
- Avoid `!` except when bridging a framework or serializer limitation; leave a short reason.
```csharp
public sealed class User
{
public required string Email { get; init; }
public string? DisplayName { get; init; }
}
```
## Records and value semantics
…Read the whole file at its exact version.
How to install
mdr add lugassawan/swe-workbench/language-csharp@sha256:bf1f12a48098c194The line at the top of this page pins the label git:20260828.71a6399, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_7uxampciea765dxs)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between May 29, 2026 and Aug 28, 2026, about one every 23 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.71a6399 latest | 2026-08-28 | 71a6399 | 5,647 B | A | view · diff |
| git:20260719.e1f78e0 | 2026-07-19 | e1f78e0 | 5,687 B | A | view · diff |
| git:20260623.a686e99 | 2026-06-23 | a686e99 | 5,344 B | A | view · diff |
| git:20260612.fe367ca | 2026-06-12 | fe367ca | 5,087 B | A | view · diff |
| git:20260529.6d267d2 | 2026-05-29 | 6d267d2 | 5,014 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5647 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
lugassawan/swe-workbench · 3 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7uxampciea765dxs GET https://markdownregistry.com/api/v1/resolve?ref=lugassawan/swe-workbench/language-csharp GET https://markdownregistry.com/api/v1/blob/bf1f12a48098c194611185ce06d7fd947345f9008f1cccfe554f62442911e3ee
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.