dotnet-patterns SKILL.md skillA
dotnet-patterns from jdanigo/hydraia is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jdanigo/hydraia/dotnet-patterns@git:20260703.2ff8155Pins git:20260703.2ff8155 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jdanigo/hydraia
- Path
skills/dotnet-patterns/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260703.2ff8155, committed Jul 3, 2026
- Size
- 2,855 bytes
- Repository stars
- 8
- License
- MIT
Use when writing C#/.NET backend code — ASP.NET Core APIs (minimal APIs or MVC), workers, EF Core data access. Builder playbook: layout, DI lifetimes, async/cancellation, EF Core discipline, options pattern, error contract, testing shape. Complements csharp-reviewer.
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 Backend Patterns ## Layout - Vertical slices (feature folders: endpoint + handler + models per feature) for API-shaped services; full Clean Architecture layering only when the domain genuinely warrants it — record the choice as an ADR either way. - Minimal APIs for small/medium surfaces; MVC controllers when filters/model-binding complexity earns it. ## DI lifetimes (the classic traps) - Scoped services must NEVER be captured by singletons (captive dependency — resolve via `IServiceScopeFactory` inside the singleton instead). - `HttpClient` via `IHttpClientFactory`, never `new HttpClient()` per call (socket exhaustion). - Register by interface at the boundary you intend to fake in tests; concrete elsewhere is fine. ## Async all the way - No `.Result`/`.Wait()`/`GetAwaiter().GetResult()` on async paths — deadlock and threadpool starvation fuel. - `CancellationToken` flows from the endpoint through every service and EF call: `await db.Orders.ToListAsync(ct)`. Endpoints accept it; libraries propagate it. - `ValueTask` only where profiling justifies it; default is `Task`. ## EF Core discipline …
Read the whole file at its exact version.
How to install
mdr add jdanigo/hydraia/dotnet-patterns@sha256:713bf467d072cdb8The line at the top of this page pins the label git:20260703.2ff8155, 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_p5kptpik3n62ww3p)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 3, 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 (2855 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
jdanigo/hydraia · 8 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_p5kptpik3n62ww3p GET https://markdownregistry.com/api/v1/resolve?ref=jdanigo/hydraia/dotnet-patterns GET https://markdownregistry.com/api/v1/blob/713bf467d072cdb8e2fbebf90f8d9c07781fb54390d624ee2ca281499dacd04b
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.