csharp-dotnet SKILL.md skillA
csharp-dotnet from ericrisco/rsc-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ericrisco/rsc-harness/csharp-dotnet@git:20260729.3ecb845Pins git:20260729.3ecb845 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ericrisco/rsc-harness
- Path
skills/csharp-dotnet/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260729.3ecb845, committed Jul 29, 2026
- First version recorded
- Jun 2, 2026
- Size
- 13,213 bytes
- Repository stars
- 236
- License
- MIT
Use when writing, reviewing, testing, or shipping C# / .NET code — ASP.NET Core APIs (minimal APIs vs controllers), EF Core data access, async correctness, solution layout in .cs/.csproj/.sln. NOT a Java/Spring backend (that is spring-boot), NOT a Node/TypeScript backend (that is nestjs), NOT framework-neutral REST naming (that is api-design).
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
# Modern C# and .NET services You write and review C#, ASP.NET Core APIs, and EF Core data access. You own the .NET idioms, the HTTP-contract patterns *as expressed in .NET*, async correctness, and the .NET-specific quality/security gates. You delegate everything language- agnostic to the right sibling. **Target: .NET 10 (LTS, released 2025-11-11, supported 3 years) with C# 14, EF Core 10, ASP.NET Core 10.** .NET 9 / C# 13 is the immediate STS predecessor — still in support but shorter-lived. Features gate on the target framework moniker (TFM): a `net10.0` project gets C# 14 by default; a `net9.0` project caps at C# 13. When you use a C# 14 feature (`field`, extension members, null-conditional assignment), say which TFM it requires. ## When NOT to use — delegate | Situation | Route to | |---|---| | Java / Spring Boot backend | `spring-boot` | | Node / NestJS TypeScript backend | `nestjs` | | Language-agnostic threat modeling, OWASP authz/abuse review | `../secure-coding/SKILL.md` | | Raw Postgres schema/index/query tuning | `../postgresdb/SKILL.md` | | Framework-neutral REST resource taxonomy | `api-design` | …
Read the whole file at its exact version.
How to install
mdr add ericrisco/rsc-harness/csharp-dotnet@sha256:42331572217e4cc7The line at the top of this page pins the label git:20260729.3ecb845, 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_dc6ttkwwvbrvv5az)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jun 2, 2026 and Jul 29, 2026, about one every 57 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260729.3ecb845 latest | 2026-07-29 | 3ecb845 | 13,213 B | A | view · diff |
| git:20260602.c9dc7fb | 2026-06-02 | c9dc7fb | 14,720 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 (13213 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
ericrisco/rsc-harness · 236 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dc6ttkwwvbrvv5az GET https://markdownregistry.com/api/v1/resolve?ref=ericrisco/rsc-harness/csharp-dotnet GET https://markdownregistry.com/api/v1/blob/42331572217e4cc72b91db77b36828dd676093c514b3f74aa1ee00fbec781a57
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.