marketplace-publishing

marketplace-publishing is a skill for Claude Code from Aaronontheweb/dotnet-skills. It costs 36 tokens per session (1,520 once invoked), scanned A, original, MIT.

A workflow guide for publishing skills and agents to the dotnet-skills Claude Code marketplace. It explains the repository layout, marketplace metadata, validation, and release process.

In plain words
What is it for?
Use it to add or update .NET-related skills and agents, edit plugin and marketplace metadata, run validation, and prepare a release.
Why use it?
It reduces errors when adding marketplace content or updating the files that register and validate it.

Skill for Claude Code

Written for Claude Code: Claude Code plugin machinery. Also seen: mentions Claude Code.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./scripts/validate-marketplace.sh.

Part of the dotnet-skills plugin — 37 skills, 6 agents shipped together

not rated 1.1krepo +10 today A scan Socket: passSnyk: passSkillSpector: pass 36 tokens original MIT

Good fit Use it to add or update .NET-related skills and agents, edit plugin and marketplace metadata, run validation, and prepare a release.

Compare 6 skills from other repositories ↓
About the project

.NET Skills is an AI coding plugin that provides skills and specialized guidance for professional .NET development, covering areas such as C#, Akka.NET, Aspire, Entity Framework Core, testing, and performance. .NET developers use it with coding assistants to apply production-oriented patterns while building and maintaining applications. The catalogue contains the plugin’s skills, agents, and instructions.

Aaronontheweb/dotnet-skills · 1,150 stars · on GitHub

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/Aaronontheweb/dotnet-skills
agentmods
npx agentmods add skills/aaronontheweb/dotnet-skills/marketplace-publishing

Made for: Claude Code.

Or install dotnet-skills, the plugin that ships this one along with the rest of its 37 skills, 6 agents.

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 marketplace-publishing

README.md
[![agentmods](https://agentmods.dev/badge/skills/aaronontheweb/dotnet-skills/marketplace-publishing/github.svg)](https://agentmods.dev/skills/aaronontheweb/dotnet-skills/marketplace-publishing)
Your own site
<a href="https://agentmods.dev/skills/aaronontheweb/dotnet-skills/marketplace-publishing"><img src="https://agentmods.dev/badge/skills/aaronontheweb/dotnet-skills/marketplace-publishing/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 marketplace-publishing

Your own site · 80×15
<a href="https://agentmods.dev/skills/aaronontheweb/dotnet-skills/marketplace-publishing"><img src="https://agentmods.dev/badge/skills/aaronontheweb/dotnet-skills/marketplace-publishing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,520 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. Third-party audits
  • Socket pass 18 Mar 2026
  • Snyk pass 15 Feb 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00036 $0.01520
Opus 5 $0.00018 $0.00760
Sonnet 5 $0.00007 $0.00304
Haiku 4.5 $0.00004 $0.00152

Measured 11d ago against content hash 1af20f791793, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

marketplace-publishing 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 11d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/marketplace-publishing/SKILL.md · 264 lines

How it starts

The opening of the file, as written. The whole thing — 264 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Marketplace Publishing Workflow

This skill documents how to publish skills and agents to the dotnet-skills Claude Code marketplace.

Repository Structure

dotnet-skills/
├── .claude-plugin/
│   ├── marketplace.json      # Marketplace catalog
│   └── plugin.json           # Plugin metadata + skill/agent registry
├── .github/workflows/
│   └── release.yml           # Release automation
├── skills/
│   ├── akka/                 # Akka.NET skills
│   │   ├── best-practices/SKILL.md
│   │   ├── testing-patterns/SKILL.md
│   │   └── ...
│   ├── aspire/               # .NET Aspire skills
│   ├── csharp/               # C# language skills
│   ├── testing/              # Testing framework skills
│   └── meta/                 # Meta skills
├── agents/
│   └── *.md                  # Agent definitions
└── scripts/
    └── validate-marketplace.sh

Adding a New Skill

Step 1: Choose a Category

Skills are organized by domain:

Category Purpose
akka/ Akka.NET actor patterns, testing, clustering
aspire/ .NET Aspire orchestration, testing, configuration
csharp/ C# language features, coding standards
testing/ Testing frameworks (xUnit, Playwright, Testcontainers)
meta/ Meta skills about this marketplace

Create a new category folder if none fits.

Step 2: Create the Skill Folder

Create a folder with SKILL.md inside:

skills/<category>/<skill-name>/SKILL.md

Example: skills/akka/cluster-sharding/SKILL.md

Step 3: Write the SKILL.md

---
name: my-new-skill
description: Brief description of what this skill does and when to use it.
---

# My New Skill

## When to Use This Skill

Use this skill when:
- [List specific scenarios]

---

## Content

[Comprehensive guide with examples, patterns, and anti-patterns]

Requirements:

  • name must be lowercase with hyphens (e.g., cluster-sharding)
  • description should be 1-2 sentences explaining when Claude should use this skill
  • Content should be 10-40KB covering the topic comprehensively
  • Include concrete code examples with modern C# patterns

Read the full file on GitHub · 264 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. 11d ago First seen · 264 lines · 36 tokens per session scan A 1af20f791793

Subscribe to this mod's changes

marketplace-publishing is a skill published in the GitHub repository Aaronontheweb/dotnet-skills (1,150 stars, last pushed today), licensed MIT. It adds 36 tokens to every session and 1,520 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 2026-08-30.