.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.
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/Aaronontheweb/dotnet-skillsnpx agentmods add skills/aaronontheweb/dotnet-skills/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/aaronontheweb/dotnet-skills/marketplace-publishing)<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.
<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>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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.
Copies of this mod
1 near-identical copy found in the catalogue:
- marketplace-publishing — 100% identical, 1 lines differ
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:
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 · 264 lines · 36 tokens per session scan A 1af20f791793
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.
Other skills, from other repositories
agent-release-swarm
Agent skill for release-swarm - invoke with $agent-release-swarm.
release-announcement
Write a release announcement — changelog, blog post, in-app note, or social post — that leads with user impact, names the audience, and includes upgrade/migration steps without filler.
multi-agent-release-manager
Cleans up the workspace, formats code, runs presubmit checks, and uploads CLs to Gerrit.
release-notes
Generate user-facing release notes from tickets, PRDs, or changelogs. Creates clear, engaging summaries organized by category (new features, improvements, fixes). Use when writing release notes, creating changelogs, announcing product updates, or summarizing what shipped.
pack-submit
Package one of this agent's own skills as a standalone community pack and submit it to the aeon registry as a PR.
updater_guide
Guidance for checking for and installing Row-Bot updates.