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.
git clone --depth 1 https://github.com/ComeOnOliver/skillshubnpx agentmods add skills/comeonoliver/skillshub/marketplace-publishingWrote 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.
[](https://agentmods.dev/skills/comeonoliver/skillshub/marketplace-publishing)<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.
<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>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 | $0.00036 | $0.01520 |
| Opus 5 | $0.00018 | $0.00760 |
| Sonnet 5 | $0.00007 | $0.00304 |
| Haiku 4.5 | $0.00004 | $0.00152 |
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.
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.
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:
namemust be lowercase with hyphens (e.g.,cluster-sharding)descriptionshould 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
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.
- 11d ago First seen · 265 lines · 36 tokens per session scan A c24f0a22c668
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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