csharp SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
csharp from alexander-danilenko/cortex-ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alexander-danilenko/cortex-ai-skills/csharp@git:20261013.ecfffa1Pins git:20261013.ecfffa1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- alexander-danilenko/cortex-ai-skills
- Path
plugins/engineering/cortex-dotnet/skills/csharp/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261013.ecfffa1, committed Oct 13, 2026
- Size
- 3,958 bytes
- Repository stars
- 17
- License
- MIT
Apply these opinionated C# conventions whenever writing or reviewing C# 12 / .NET 8+ code: nullable enabled with warnings as errors, records and primary constructors, pattern matching over cast chains, the Result pattern for expected failures, async all the way with CancellationToken, IOptions config, IHttpClientFactory, and never returning EF entities from an API.
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# Conventions House conventions for C# 12 / .NET 8+. Apply them to code you are writing or changing — don't rewrite untouched files to match unless asked. ## Conventions - **`<Nullable>enable</Nullable>` and warnings as errors.** The nullable annotations only pay off if the warnings block the build; ignored, they become decoration that lies about which references can be null. - **C# 12 defaults:** file-scoped namespaces, primary constructors, collection expressions, `required` members. Records for DTOs and value objects — value equality is what you want when comparing data, and hand-written `Equals`/`GetHashCode` pairs drift apart. - **Pattern matching over type-test-and-cast chains.** Switch expressions on a closed hierarchy let the compiler warn about unhandled cases; an `if`/`else if` ladder just falls through silently when a new type appears. …
Read the whole file at its exact version.
How to install
mdr add alexander-danilenko/cortex-ai-skills/csharp@sha256:9a23c3db35130646The line at the top of this page pins the label git:20261013.ecfffa1, 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_w667itddf4ksbbvz)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 13, 2026.
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 (3958 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
alexander-danilenko/cortex-ai-skills · 17 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_w667itddf4ksbbvz GET https://markdownregistry.com/api/v1/resolve?ref=alexander-danilenko/cortex-ai-skills/csharp GET https://markdownregistry.com/api/v1/blob/9a23c3db35130646e58e804068e815c9e6ebc27a861d791211f93621d220dc8b
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.
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