writing-csharp SKILL.md skillA
writing-csharp from alexei-led/cc-thingz is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alexei-led/cc-thingz/writing-csharp@git:20260930.3330acaPins git:20260930.3330aca in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- alexei-led/cc-thingz
- Path
src/skills/writing-csharp/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260930.3330aca, committed Sep 30, 2026
- First version recorded
- Jun 27, 2026
- Size
- 2,797 bytes
- Repository stars
- 38
- License
- MIT
Idiomatic C# /.NET development. Use when writing C# code, changing `.csproj`.
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 Development Check the nearest `*.csproj`, `Directory.Build.props`, `global.json`, and CI for `TargetFramework(s)`, `LangVersion`, nullable context, and analyzer policy before using newer syntax. Without an explicit `LangVersion`, the C# version follows the TFM (`net8.0` defaults to C# 12; `net6.0` defaults to C# 10, which lacks primary constructors and collection expressions). Project conventions win over these defaults, and raising `LangVersion` or the TFM to unlock syntax is a separate decision — ask first, don't do it on your own. ## Defaults - BCL and existing NuGet packages first. Keep the app's existing choices: controllers vs minimal APIs, DI container, ORM, test framework. - Nullable reference types stay on. Model absence with `?`; handle a missing result explicitly (e.g. return `NotFound`/`Problem`) instead of `!`. Never suppress a warning; fix it at the source. - Async end to end: no `.Result`, `.Wait()`, or `GetAwaiter().GetResult()`. Pass `CancellationToken` through cancellable boundaries, including EF calls. …
Read the whole file at its exact version.
How to install
mdr add alexei-led/cc-thingz/writing-csharp@sha256:6f32e08b4ac235a5The line at the top of this page pins the label git:20260930.3330aca, 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_kd7hvszp32ztcdkp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jun 27, 2026 and Sep 30, 2026, about one every 24 days. Its first recorded version is graded B and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260930.3330aca latest | 2026-09-30 | 3330aca | 2,797 B | A | view · diff |
| git:20260928.3135f26 | 2026-09-28 | 3135f26 | 2,621 B | A | view · diff |
| git:20260716.29b4d22 | 2026-07-16 | 29b4d22 | 3,404 B | A | view · diff |
| git:20260629.26ad5b3 | 2026-06-29 | 26ad5b3 | 3,407 B | B | view · diff |
| git:20260627.3f70af5 | 2026-06-27 | 3f70af5 | 2,845 B | B | 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 (2797 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
alexei-led/cc-thingz · 38 stars · license MIT · pushed 2026-10-25 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_kd7hvszp32ztcdkp GET https://markdownregistry.com/api/v1/resolve?ref=alexei-led/cc-thingz/writing-csharp GET https://markdownregistry.com/api/v1/blob/6f32e08b4ac235a5f771f8316741cd6d13da96467f381c9170b4eb40b7a20937
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.