microsoft/win-dev-skills is a collection of AI-agent instructions and tools for creating native Windows applications with WinUI 3 and the Windows App SDK. Windows developers use it to guide agents through app development tasks from scaffolding and design to testing, packaging, and release. The catalogue entries are its agents, skills, and plugin components.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/microsoft/win-dev-skillsWrote 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/plugins/microsoft/win-dev-skills/marketplace)<a href="https://agentmods.dev/plugins/microsoft/win-dev-skills/marketplace"><img src="https://agentmods.dev/badge/plugins/microsoft/win-dev-skills/marketplace/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/plugins/microsoft/win-dev-skills/marketplace"><img src="https://agentmods.dev/badge/plugins/microsoft/win-dev-skills/marketplace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
win-dev-skills marketplace 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
{
"name": "win-dev-skills",
"owner": {
"name": "Microsoft",
"url": "https://github.com/microsoft/win-dev-skills"
},
"description": "Agents and skills for Windows development and debugging.",
"version": "0.7.1",
"plugins": [
{
"name": "windbg",
"description": "WinDbg diagnosis workflows and report validation for applications, services, UMDF/user-mode drivers, and kernel-mode drivers.",
"version": "1.0.0",
"source": "./plugins/windbg",
"author": {
"name": "Microsoft",
"url": "https://github.com/microsoft/WinDbg-Feedback"
},
"homepage": "https://github.com/microsoft/WinDbg-Feedback",
"repository": "https://github.com/microsoft/win-dev-skills"
},
{
"name": "winui",
"description": "Agents and skills for WinUI 3 app development. Create new WinUI 3 desktop apps, convert from other frameworks to WinUI 3, or add features to existing WinUI 3 applications.",
"version": "0.7.1",
"source": {
"source": "git-subdir",
"url": "https://github.com/microsoft/winappCli.git",
"path": "plugins/winui",
"sha": "5a064a427f1e056822a939b13ddce43b798090fa"
},
"category": "windows-development",
"tags": [
"windows",
"winui",
"winui3",
"xaml",
"msix",
"packaging",
"desktop",
"wpf-migration"
],
"author": {
"name": "Microsoft",
"url": "https://github.com/microsoft/win-dev-skills"
},
"homepage": "https://github.com/microsoft/win-dev-skills",
"repository": "https://github.com/microsoft/winappCli",
"license": "MIT"
},
{
"name": "winappcli",
"description": "Windows app development, packaging, and distribution. Helps with creating Windows installers (MSIX), code signing, certificates, Windows SDK and Windows App SDK setup, package identity for Windows APIs (push notifications, background tasks, share tarThe plugins it lists here
This marketplace lists 1 plugin kept in the same repository. Each has its own page, its own measurements and its own install command.
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.
- 8d ago Changed · +49 lines 671df4cb6490
- 1mo ago First seen · 36 lines scan A 4f67bf615451
win-dev-skills marketplace is a plugin published in the GitHub repository microsoft/win-dev-skills (472 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.
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