SimpleModule: Skill for Claude Code

.claude/skills/new-module/SKILL.md

new-module is a skill for Claude Code from antosubash/SimpleModule. It costs 35 tokens per session (1,231 once invoked), scanned A, original, MIT.

A scaffolding skill that creates a new module in a modular monolith, a single application organised into separate feature modules. It sets up the module's contracts, implementation project, and tests according to the repository's conventions.

In plain words
What is it for?
Use it when starting a new module, such as a Payments module, in the specified .NET repository structure.
Why use it?
It avoids repeatedly assembling the same project structure and reduces mistakes in references, naming, and required files. The result follows the existing module layout rather than introducing a separate pattern.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

This is antosubash/SimpleModule's own configuration. It tells Claude Code how to work on SimpleModule itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything SimpleModule configures →

Reuse

Borrowing it

Nothing to install: this file belongs to antosubash/SimpleModule. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/antosubash/SimpleModule/main/.claude/skills/new-module/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/antosubash/SimpleModule

Made for: Claude Code.

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 new-module

README.md
[![agentmods](https://agentmods.dev/badge/skills/antosubash/simplemodule/new-module/github.svg)](https://agentmods.dev/skills/antosubash/simplemodule/new-module)
Your own site
<a href="https://agentmods.dev/skills/antosubash/simplemodule/new-module"><img src="https://agentmods.dev/badge/skills/antosubash/simplemodule/new-module/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 new-module

Your own site · 80×15
<a href="https://agentmods.dev/skills/antosubash/simplemodule/new-module"><img src="https://agentmods.dev/badge/skills/antosubash/simplemodule/new-module.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,231 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.01231
Opus 5.5 $0.00014 $0.00492
Sonnet 5.5 $0.00007 $0.00246
Haiku 4.5 $0.00003 $0.00123

Measured 1mo ago against content hash 0a00360ca16c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

new-module 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 1mo 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.

.claude/skills/new-module/SKILL.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

New Module Scaffolding

When the user asks to create a new module, follow these steps exactly.

Required Input

  • Module name (e.g., "Payments")

Steps

1. Create Contracts Project

Create modules/<Name>/src/SimpleModule.<Name>.Contracts/:

SimpleModule..Contracts.csproj:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
    <OutputType>Library</OutputType>
  </PropertyGroup>
  <ItemGroup>
    <ProjectReference Include="..\..\..\..\framework\SimpleModule.Core\SimpleModule.Core.csproj" />
  </ItemGroup>
</Project>

Constants.cs:

namespace SimpleModule.<Name>.Contracts;

public static class <Name>Constants
{
    public const string ModuleName = "<Name>";
    public const string RoutePrefix = "/api/<name-lowercase>";
}

IContracts.cs:

using System.Diagnostics.CodeAnalysis;

namespace SimpleModule.<Name>.Contracts;

[SuppressMessage("Design", "CA1040:Avoid empty interfaces", Justification = "Contracts placeholder")]
public interface I<Name>Contracts
{
}

2. Create Implementation Project

Create modules/<Name>/src/SimpleModule.<Name>/:

SimpleModule..csproj:

<Project Sdk="Microsoft.NET.Sdk.StaticWebAssets">
  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <FrameworkReference Include="Microsoft.AspNetCore.App" />
    <ProjectReference Include="..\..\..\..\framework\SimpleModule.Core\SimpleModule.Core.csproj" />
    <!-- Add only if the module owns a DbContext:
    <ProjectReference Include="..\..\..\..\framework\SimpleModule.Database\SimpleModule.Database.csproj" /> -->
    <ProjectReference Include="..\SimpleModule.<Name>.Contracts\SimpleModule.<Name>.Contracts.csproj" />
  </ItemGroup>
</Project>

Module.cs:

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using SimpleModule.Core;
using SimpleModule.Core.Menu;
using SimpleModule.<Name>.Contracts;

namespace SimpleModule.<Name>;

[Module(<Name>Constants.ModuleName, RoutePrefix = <Name>Constants.RoutePrefix, ViewPrefix = "/<name-lowercase>")]
public class <Name>Module : IModule
{
    public void ConfigureServices(IServiceCollection services, IConfiguration configuration)
    {
        services.AddScoped<I<Name>Contracts, <Name>ContractsService>();
    }

    public void ConfigureMenu(IMenuBuilder menus)
    {
        menus.Add(
            new MenuItem
            {
                Label = "<Name>",
                Url = "/<name-lowercase>",
                Icon = """<svg class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><path d="M4 6h16M4 12h16M4 18h16"/></svg>""",
                Order = 50,
                Section = MenuSection.AppSidebar,
            }
        );
    }
}

Read the full file on GitHub · 154 lines

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. 1mo ago First seen · 154 lines · 35 tokens per session scan A 0a00360ca16c

Subscribe to this mod's changes

new-module is a skill published in the GitHub repository antosubash/SimpleModule (5 stars, last pushed 19d ago), licensed MIT. It adds 35 tokens to every session and 1,231 once invoked, about $0.0001 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 2026-09-04.

Related

Other skills, from other repositories

agui-dotnet-streaming-chat

Get started with the AG-UI .NET SDK: bootstrap and run your first streaming-chat app (client + server) with the AG-UI .NET NuGet packages (AGUI.Client, AGUI.Server, AGUI.Formatting, AGUI.Abstractions). USE FOR: which packages to install and how to wire them; constructing an AGUIChatClient against an endpoint and…

ag-ui-protocol/ag-ui · 223 tokens

azure-eventgrid-dotnet

Azure Event Grid SDK for .NET. Client library for publishing and consuming events with Azure Event Grid. Use for event-driven architectures, pub/sub messaging, CloudEvents, and EventGridEvents. Triggers: "Event Grid", "EventGridPublisherClient", "CloudEvent", "EventGridEvent", "publish events .NET", "event-driven"…

microsoft/skills · 80 tokens

azure-maps-search-dotnet

Azure Maps SDK for .NET. Location-based services including geocoding, routing, rendering, geolocation, and weather. Use for address search, directions, map tiles, IP geolocation, and weather data. Triggers: "Azure Maps", "MapsSearchClient", "MapsRoutingClient", "MapsRenderingClient", "geocoding .NET", "route…

microsoft/skills · 91 tokens

azure-mgmt-apicenter-dotnet

Azure API Center SDK for .NET. Centralized API inventory management with governance, versioning, and discovery. Use for creating API services, workspaces, APIs, versions, definitions, environments, deployments, and metadata schemas. Triggers: "API Center", "ApiCenterService", "ApiCenterWorkspace", "ApiCenterApi", "API…

microsoft/skills · 97 tokens

azure-ai-voicelive-dotnet

Azure AI Voice Live SDK for .NET. Build real-time voice AI applications with bidirectional WebSocket communication. Use for voice assistants, conversational AI, real-time speech-to-speech, and voice-enabled chatbots. Triggers: "voice live", "real-time voice", "VoiceLiveClient", "VoiceLiveSession", "voice assistant…

microsoft/skills · 92 tokens

create-datadriven-aspnetcore

Generate or scaffold ASP.NET Core code — Razor Pages, Blazor components, MVC controllers, views, and Minimal API endpoints — without using ASP.NET Core CLI scaffolding/code-generation tools. Use when (1) adding CRUD pages, views, or API endpoints backed by Entity Framework (EF Core) and a database, (2) generating code…

dotnet/skills · 147 tokens