What is csharp-conventions?

A set of general coding conventions for C# services built with .NET. It covers command and query types, error handling, asynchronous work, multi-tenancy, dependency injection, and naming.

It helps write handlers, validation results, asynchronous database or service calls, tenant-aware queries, dependency registrations, and consistently named code.

It keeps service code consistent and makes expected business errors easier to handle without using exceptions as normal control flow.

csharp-conventions — Skill for Claude Code by makigjuro

Install

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.

Any agent

npx skills add makigjuro/cloudstack-ai-plugins --skill csharp-conventions

Clone the repo

git clone --depth 1 https://github.com/makigjuro/cloudstack-ai-plugins

Made for: Claude Code.

Or install dotnet-architect, the plugin that ships this one along with the rest of its 14 skills, 1 agent.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/makigjuro/cloudstack-ai-plugins/csharp-conventions/github.svg)](https://agentmods.dev/skills/makigjuro/cloudstack-ai-plugins/csharp-conventions)

Your own site

<a href="https://agentmods.dev/skills/makigjuro/cloudstack-ai-plugins/csharp-conventions"><img src="https://agentmods.dev/badge/skills/makigjuro/cloudstack-ai-plugins/csharp-conventions/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/makigjuro/cloudstack-ai-plugins/csharp-conventions"><img src="https://agentmods.dev/badge/skills/makigjuro/cloudstack-ai-plugins/csharp-conventions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 345 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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 5.1	$0.00050	$0.00345
Opus 5.5	$0.00020	$0.00138
Sonnet 5.5	$0.00010	$0.00069
Haiku 4.5	$0.00005	$0.00034

Measured 6d ago against content hash d006cbfe203b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

csharp-conventions 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 6d 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.

plugins/dotnet-architect/skills/csharp-conventions/SKILL.md · 37 lines

What it actually says

C# General Rules

Commands & Queries

Define as record types (immutable): public record CreateOrderCommand(Guid TenantId, string Name);
Handlers return Result<T> or Result, never throw exceptions for business logic
Handler signature: public async Task<Result<TResponse>> Handle(TCommand command, CancellationToken cancellationToken)

Error Handling

Use Result<T> from the shared infrastructure layer
Error codes in SCREAMING_SNAKE_CASE: "ORDER_ALREADY_EXISTS", "CUSTOMER_NOT_FOUND"
Use typed ErrorType enum: Validation, NotFound, Conflict, Unauthorized, Forbidden, Failure, Unexpected
Never throw exceptions for expected business failures

Async

All I/O is async with CancellationToken propagated
Suffix async methods with Async: GetByIdAsync(), AddAsync()
Always await or return tasks, never fire-and-forget without explicit intent

Multi-tenancy

TenantId is a first-class value object, present on commands and entities
Filter queries by tenant where applicable

DI Registration

Services registered as scoped: services.AddScoped<IService, Service>()

Naming

_camelCase for private fields
Folders match namespace segments

Changes

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.

6d ago First seen · 37 lines · 50 tokens per session scan A d006cbfe203b

Subscribe to this mod's changes

csharp-conventions is a skill published in the GitHub repository makigjuro/cloudstack-ai-plugins (1 stars, last pushed 5d ago), licensed MIT. It adds 50 tokens to every session and 345 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-21.

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