property-patterns SKILL.md skillA
property-patterns from dotnet/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dotnet/skills/property-patterns@git:20260930.d2cd7c6Pins git:20260930.d2cd7c6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dotnet/skills
- Path
plugins/dotnet-msbuild/skills/property-patterns/SKILL.md- Versions recorded
- 6
- Latest version
- git:20260930.d2cd7c6, committed Sep 30, 2026
- First version recorded
- May 22, 2026
- Size
- 6,761 bytes
- Repository stars
- 5,836
- License
- MIT
Diagnose and fix concrete MSBuild property defects in projects and existing shared-file hierarchies. USE FOR: conditions, defaults, append versus overwrite, last-write-wins values, OS/TFM checks, portable paths, normalization, and reviews centered on those property defects. Property defects in Directory.Build.* remain in scope, including overwritten values across parent/child imports and conditions that run before TargetFramework is set, even when the fix changes import order or moves a…
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
# MSBuild Property Patterns
Canonical property definition and manipulation patterns from the MSBuild repository.
## Conditional Defaults — The Foundational Pattern
Set a property **only if not already set**, allowing callers to override:
```xml
<PropertyGroup>
<Configuration Condition="'$(Configuration)' == ''">Debug</Configuration>
<Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>
<BuildInParallel Condition="'$(BuildInParallel)' == ''">true</BuildInParallel>
</PropertyGroup>
```
### Rules
- Always quote both sides: `'$(Prop)' == ''`
- In `.props`: creates overridable defaults. In `.targets`: creates fallbacks.
- Properties without the condition **cannot be overridden** by earlier imports.
## Nested Conditional Groups
Group related properties under a shared condition:
```xml
<PropertyGroup Condition="$(TargetFramework.StartsWith('net4'))">
<DefineConstants>$(DefineConstants);FEATURE_APARTMENT_STATE</DefineConstants>
<DefineConstants>$(DefineConstants);FEATURE_APM</DefineConstants>
<FeatureAppDomain>true</FeatureAppDomain>
</PropertyGroup>
<PropertyGroup Condition="'$([MSBuild]::GetTargetFrameworkIdentifier('$(TargetFramework)'))' == '.NETCoreApp'">
…Read the whole file at its exact version.
How to install
mdr add dotnet/skills/property-patterns@sha256:fa35856fde19371cThe line at the top of this page pins the label git:20260930.d2cd7c6, 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_wzo2dwouczyn4woq)
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Versions
The registry has recorded 6 versions of this file, between May 22, 2026 and Sep 30, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260930.d2cd7c6 latest | 2026-09-30 | d2cd7c6 | 6,761 B | A | view · diff |
| git:20260930.83662c4 | 2026-09-30 | 83662c4 | 6,557 B | A | view · diff |
| git:20260930.ac46442 | 2026-09-30 | ac46442 | 6,524 B | A | view · diff |
| git:20260716.9c7436b | 2026-07-16 | 9c7436b | 6,759 B | A | view · diff |
| git:20260624.67e2a47 | 2026-06-24 | 67e2a47 | 6,902 B | A | view · diff |
| git:20260522.5f11701 | 2026-05-22 | 5f11701 | 6,947 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 (6761 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
dotnet/skills · 5,836 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wzo2dwouczyn4woq GET https://markdownregistry.com/api/v1/resolve?ref=dotnet/skills/property-patterns GET https://markdownregistry.com/api/v1/blob/fa35856fde19371c9de57c518c468a02e8fe26a80b4ee99a5a680cf1449582fd
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.