csharp-expert

csharp-expert is a skill for Claude Code, Codex from luokai0/ai-agent-skills-by-luo-kai. It costs 43 tokens per session (264 once invoked), scanned A, original, no licence file.

An expert coding skill for C# and .NET applications. C# is Microsoft's programming language, and .NET provides libraries and tools for building applications, web services, and data-backed systems.

In plain words
What is it for?
Use it for C# applications, ASP.NET Core, Entity Framework database work, and general .NET development.
Why use it?
It helps write and improve C# code using features such as LINQ for querying data, asynchronous programming, web development, and database access.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it for C# applications, ASP.NET Core, Entity Framework database work, and general .NET development.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/luokai0/ai-agent-skills-by-luo-kai/csharp-expert
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 luokai0/ai-agent-skills-by-luo-kai --skill csharp-expert
Clone the repo
git clone --depth 1 https://github.com/luokai0/ai-agent-skills-by-luo-kai

Made for: Claude Code, Codex.

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.

agentmods badge for csharp-expert

README.md
[![agentmods](https://agentmods.dev/badge/skills/luokai0/ai-agent-skills-by-luo-kai/csharp-expert/github.svg)](https://agentmods.dev/skills/luokai0/ai-agent-skills-by-luo-kai/csharp-expert)
Your own site
<a href="https://agentmods.dev/skills/luokai0/ai-agent-skills-by-luo-kai/csharp-expert"><img src="https://agentmods.dev/badge/skills/luokai0/ai-agent-skills-by-luo-kai/csharp-expert/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.

agentmods 80×15 button for csharp-expert

Your own site · 80×15
<a href="https://agentmods.dev/skills/luokai0/ai-agent-skills-by-luo-kai/csharp-expert"><img src="https://agentmods.dev/badge/skills/luokai0/ai-agent-skills-by-luo-kai/csharp-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 264 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 unknown 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00043 $0.00264
Opus 5 $0.00022 $0.00132
Sonnet 5 $0.00009 $0.00053
Haiku 4.5 $0.00004 $0.00026

Measured 9d ago against content hash 7369576b7b0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

csharp-expert 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 9d 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.

ai-agent-skills/01-programming-languages (by Luo Kai)/05-dotnet-csharp/csharp-expert/SKILL.md · 38 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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.

  1. 9d ago First seen · 38 lines · 43 tokens per session scan A 7369576b7b0c

Subscribe to this mod's changes

csharp-expert is a skill published in the GitHub repository luokai0/ai-agent-skills-by-luo-kai (11 stars, last pushed 4mo ago), with no licence file. It adds 43 tokens to every session and 264 once invoked, about $0.0002 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 2026-09-03.

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