marketplace-publishing

marketplace-publishing is a skill for Claude Code from ComeOnOliver/skillshub. It costs 36 tokens per session (1,520 once invoked), scanned A, a copy of marketplace-publishing, MIT.

A release guide for publishing coding skills and agents to the dotnet-skills Claude Code marketplace. It explains the repository structure, metadata files, validation, and release tagging.

In plain words
What is it for?
Use it when adding skills or agents, updating plugin or marketplace metadata, running validation, and preparing a tagged release.
Why use it?
It gives contributors a consistent way to add or update marketplace content and helps catch metadata or repository-structure errors before release.

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.

Good fit Use it when adding skills or agents, updating plugin or marketplace metadata, running validation, and preparing a tagged release.

Compare 6 skills from other repositories ↓
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/ComeOnOliver/skillshub
agentmods
npx agentmods add skills/comeonoliver/skillshub/marketplace-publishing

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 marketplace-publishing

README.md
[![agentmods](https://agentmods.dev/badge/skills/comeonoliver/skillshub/marketplace-publishing/github.svg)](https://agentmods.dev/skills/comeonoliver/skillshub/marketplace-publishing)
Your own site
<a href="https://agentmods.dev/skills/comeonoliver/skillshub/marketplace-publishing"><img src="https://agentmods.dev/badge/skills/comeonoliver/skillshub/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/comeonoliver/skillshub/marketplace-publishing"><img src="https://agentmods.dev/badge/skills/comeonoliver/skillshub/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.
Origin 100% copy Near-identical to another mod 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 c24f0a22c668, 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

This is a copy

100% identical to marketplace-publishing — 1 line differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/Aaronontheweb/dotnet-skills/marketplace-publishing/SKILL.md · 265 lines

How it starts

The opening of the file, as written. The whole thing — 265 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 · 265 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 · 265 lines · 36 tokens per session scan A c24f0a22c668

Subscribe to this mod's changes

marketplace-publishing is a skill published in the GitHub repository ComeOnOliver/skillshub (63 stars, last pushed 2mo ago), 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. It is 100% identical to marketplace-publishing, differing in 1 line, and is treated as a copy.

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