sota-dotnet SKILL.md skillA

sota-dotnet from martinholovsky/sota-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add martinholovsky/sota-skills/sota-dotnet@git:20261026.808c340

Pins git:20261026.808c340 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
martinholovsky/sota-skills
Path
skills/sota-dotnet/SKILL.md
Versions recorded
17
Latest version
git:20261026.808c340, committed Oct 26, 2026
First version recorded
Jun 29, 2026
Size
13,141 bytes
Repository stars
26
License
CC-BY-4.0

State-of-the-art C# / .NET engineering rules (.NET LTS releases, modern C#) that Claude applies when writing or auditing .NET code. Covers modern idioms (records, nullable reference types, pattern matching, spans, file-scoped namespaces), API/null/immutability/`IDisposable` design, async/await & concurrency (ConfigureAwait, channels, cancellation, TPL), security (OWASP .NET, deserialization — BinaryFormatter removed in .NET 9, EF/Dapper SQL injection, ASP.NET Core auth, Data Protection…

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

# SOTA C# / .NET (2026)

Expert-level rules for producing and auditing production .NET. The runtime is
memory-safe, so risk concentrates in **injection, deserialization, async
correctness, and dependency supply chain**. Written for **.NET 10 LTS** (released
Nov 2025, supported to Nov 2028) and **C# 14** (records, nullable reference
types, pattern matching, spans, extension members, the `field` keyword) — flag
where a control needs a specific version. Every rule states the *why*; every
rules file ends with an audit checklist of grep/analyzer patterns.

## Purpose

Two consumers, one source of truth:

- **BUILD mode** — generating C#/.NET: follow the rules as defaults. Enable
  **nullable reference types** and treat analyzer warnings as errors; prefer
  immutability and the async-all-the-way model. Deviate only with a comment.
- **AUDIT mode** — reviewing existing code: hunt violations with the audit
  checklists, classify by severity, report in the finding format below. SQL
  string-building and legacy deserialization are presumed exploitable.

## BUILD mode

1. Before writing, read the rules files relevant to the task (see index). A web
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add martinholovsky/sota-skills/sota-dotnet@sha256:4dc99355e95cf531

The line at the top of this page pins the label git:20261026.808c340, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_dei7qy6zq4bouyuv.svg)](https://markdownregistry.com/a/art_dei7qy6zq4bouyuv)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 17 versions of this file, between Jun 29, 2026 and Oct 26, 2026, about one every 7 days.

versioncommittedcommitsizeaudit
git:20261026.808c340 latest2026-10-26 808c340 13,141 BA view · diff
git:20261025.edb0d8a2026-10-25 edb0d8a 12,919 BA view · diff
git:20261025.c05557f2026-10-25 c05557f 12,426 BA view · diff
git:20261024.8dd2b0a2026-10-24 8dd2b0a 12,321 BA view · diff
git:20261012.ae1b29b2026-10-12 ae1b29b 12,080 BA view · diff
git:20260926.e89beb12026-09-26 e89beb1 11,466 BA view · diff
git:20260925.0da81062026-09-25 0da8106 11,504 BA view · diff
git:20260925.9af12262026-09-25 9af1226 10,898 BA view · diff
git:20260925.369b5212026-09-25 369b521 10,541 BA view · diff
git:20260925.22599bd2026-09-25 22599bd 10,155 BA view · diff
git:20260925.0e5a58b2026-09-25 0e5a58b 10,083 BA view · diff
git:20260925.c4870c32026-09-25 c4870c3 10,000 BA view · diff
git:20260925.c9001692026-09-25 c900169 9,960 BA view · diff
git:20260820.7720f5a2026-08-20 7720f5a 9,090 BA view · diff
git:20260802.c1ae4452026-08-02 c1ae445 8,999 BA view · diff
git:20260701.1c5bd882026-07-01 1c5bd88 9,001 BA view · diff
git:20260629.2ffd9f52026-06-29 2ffd9f5 8,958 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (13141 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

GitHub

martinholovsky/sota-skills · 26 stars · license CC-BY-4.0 · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_dei7qy6zq4bouyuv
GET https://markdownregistry.com/api/v1/resolve?ref=martinholovsky/sota-skills/sota-dotnet
GET https://markdownregistry.com/api/v1/blob/4dc99355e95cf53151b9cac8cdcd96bc6347e20a48aad3e4635e26346ebc8a8b

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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