Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/novotnyllc/dotnet-artisan/dotnet-csharpnpx skills add novotnyllc/dotnet-artisan --skill dotnet-csharpgit clone --depth 1 https://github.com/novotnyllc/dotnet-artisanWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/novotnyllc/dotnet-artisan/dotnet-csharp)<a href="https://agentmods.dev/skills/novotnyllc/dotnet-artisan/dotnet-csharp"><img src="https://agentmods.dev/badge/skills/novotnyllc/dotnet-artisan/dotnet-csharp.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00115 | $0.01489 |
| Opus 5 | $0.00057 | $0.00745 |
| Sonnet 5 | $0.00023 | $0.00298 |
| Haiku 4.5 | $0.00012 | $0.00149 |
Grade A, and why
dotnet-csharp scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
dotnet-csharp
Overview
C# language patterns, coding standards, and .NET runtime features for idiomatic, performant code. This consolidated skill spans 25 topic areas. Load the appropriate companion file from references/ based on the routing table below.
Always-Load Baseline
These references define correctness and quality standards that apply to all C# code — load them by default whenever producing or reviewing code, regardless of what the user asked for:
references/coding-standards.md— naming conventions, file layout, style rulesreferences/async-patterns.md— async/await correctness, ConfigureAwait, cancellation propagation (nearly all .NET code uses async)references/solid-principles.md— SOLID, DRY, single responsibility, dependency inversion, anti-pattern detectionreferences/code-smells.md— common mistakes the agent should avoid without being told (async void, DI lifetime misuse, swallowed exceptions)references/dotnet-releases.md— .NET 10/11 and C# 14/15 features, version matrix, TFM-specific code generation rules (compensates for training data cutoff)
On-Demand References
Load these when the topic matches (see Routing Table keywords):
Routing Table
| Topic | Keywords | Description | Companion File |
|---|---|---|---|
| Coding standards | naming, file layout, style rules | Baseline C# conventions (naming, layout, style rules) | references/coding-standards.md |
| Async/await | async, Task, ConfigureAwait, cancellation | async/await, Task patterns, ConfigureAwait, cancellation | references/async-patterns.md |
| Dependency injection | DI, services, scopes, keyed, lifetimes | MS DI, keyed services, scopes, decoration, lifetimes | references/dependency-injection.md |
| Configuration | Options pattern, user secrets, feature flags | Options pattern, user secrets, feature flags, IOptions<T> | references/configuration.md |
| Source generators | IIncrementalGenerator, GeneratedRegex, LoggerMessage | IIncrementalGenerator, GeneratedRegex, LoggerMessage, STJ | references/source-generators.md |
| Nullable reference types | annotations, migration, agent mistakes | Annotation strategies, migration, agent mistakes | references/nullable-reference-types.md |
| Serialization | System.Text.Json, Protobuf, MessagePack, AOT | System.Text.Json source generators, Protobuf, MessagePack | references/serialization.md |
| Channels | Channel<T>, bounded/unbounded, backpressure | Channel<T>, bounded/unbounded, backpressure, drain | references/channels.md |
| LINQ optimization | IQueryable vs IEnumerable, compiled queries | IQueryable vs IEnumerable, compiled queries, allocations | references/linq-optimization.md |
| Domain modeling | aggregates, value objects, domain events | Aggregates, value objects, domain events, repositories | references/domain-modeling.md |
| SOLID principles | SRP, DRY, anti-patterns, compliance checks | SOLID and DRY principles, C# anti-patterns, fixes | references/solid-principles.md |
| Concurrency | lock, SemaphoreSlim, Interlocked, concurrent collections | lock, SemaphoreSlim, Interlocked, concurrent collections | references/concurrency-patterns.md |
| Roslyn analyzers | DiagnosticAnalyzer, CodeFixProvider, multi-version | DiagnosticAnalyzer, CodeFixProvider, CodeRefactoring | references/roslyn-analyzers.md |
| Editorconfig | IDE/CA severity, AnalysisLevel, globalconfig | IDE/CA severity, AnalysisLevel, globalconfig, enforcement | references/editorconfig.md |
| File I/O | FileStream, RandomAccess, FileSystemWatcher, paths | FileStream, RandomAccess, FileSystemWatcher, MemoryMappedFile | references/file-io.md |
| Native interop | P/Invoke, LibraryImport, ComWrappers, marshalling | P/Invoke, LibraryImport, ComWrappers, marshalling, cross-platform | references/native-interop.md |
| Input validation | .NET 10 AddValidation, FluentValidation | .NET 10 AddValidation, FluentValidation, ProblemDetails | references/input-validation.md |
| Validation patterns | DataAnnotations, IValidatableObject, IValidateOptions | DataAnnotations, IValidatableObject, IValidateOptions<T> | references/validation-patterns.md |
| Modern patterns | records, pattern matching, primary constructors | Records, pattern matching, primary constructors, C# 12-15 | references/modern-patterns.md |
| API design | naming, parameter ordering, return types, extensions | Naming, parameter ordering, return types, error patterns | references/api-design.md |
| Type design/perf | struct vs class, sealed, Span/Memory, collections | struct vs class, sealed, Span/Memory, collections | references/type-design-performance.md |
| Code smells | anti-patterns, async misuse, DI mistakes, fixes | Anti-patterns, async misuse, DI mistakes, fixes | references/code-smells.md |
| .NET releases | .NET 10, .NET 11, C# 14, C# 15, TFM, version, union, extension blocks, field keyword | Version matrix, new features, TFM-specific code generation | references/dotnet-releases.md |
| Globalization | CultureInfo, StringComparison, TimeZoneInfo, Rune, encoding | Culture-aware coding, string comparison, time zones, character processing | references/globalization.md |
| WASM interop | JSImport, JSExport, standalone WASM, wasm-experimental, browser | JSImport/JSExport, standalone .NET WASM, browser APIs, WASM AOT | references/wasm-interop.md |
What ships with it
26 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- agents/openai.yaml 278 B
- references/api-design.md 14 KB
- references/async-patterns.md 9.6 KB
- references/channels.md 15 KB
- references/code-smells.md 17 KB
- references/coding-standards.md 4.9 KB
- references/concurrency-patterns.md 15 KB
- references/configuration.md 12 KB
- references/dependency-injection.md 9.6 KB
- references/domain-modeling.md 21 KB
- references/dotnet-releases.md 6.7 KB
- references/editorconfig.md 15 KB
- references/file-io.md 18 KB
- references/globalization.md 15 KB
- references/input-validation.md 23 KB
- references/linq-optimization.md 14 KB
- references/modern-patterns.md 11 KB
- references/native-interop.md 18 KB
- references/nullable-reference-types.md 8.9 KB
- references/roslyn-analyzers.md 21 KB
- references/serialization.md 13 KB
- references/solid-principles.md 16 KB
- references/source-generators.md 18 KB
- references/type-design-performance.md 13 KB
- references/validation-patterns.md 20 KB
- references/wasm-interop.md 10 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 75 lines · 115 tokens per session scan A 30b7e321d811
dotnet-csharp is a skill published in the GitHub repository novotnyllc/dotnet-artisan (228 stars, last pushed 17d ago), licensed MIT. It adds 115 tokens to every session and 1,489 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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