winapp

A toolkit for developing, packaging, signing, and distributing Windows applications. It supports installers, package identity, manifests, certificates, and Microsoft Store submission for several app technologies.

In plain words
What is it for?
Use it to prepare Electron, .NET, C++, Rust, Flutter, or Tauri apps for Windows installation and distribution.
Why use it?
It brings the Windows-specific setup and release tasks into one workflow, including requirements for features such as push notifications and background tasks.

Plugin for Claude Code

Install

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.

Claude Code
/plugin marketplace add microsoft/winappCli
agentmods
npx agentmods add plugins/microsoft/winappcli/winapp
Clone the repo
git clone --depth 1 https://github.com/microsoft/winappCli

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

winapp 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 yesterday.

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.

plugins/winapp/.claude-plugin/plugin.json · 58 lines

What it actually says

{
  "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 target), appxmanifest authoring, and Microsoft Store distribution. Supports Electron, .NET, C++, Rust, Flutter, and Tauri apps.",
  "version": "0.6.3",
  "author": {
    "name": "Microsoft",
    "url": "https://github.com/microsoft/WinAppCli"
  },
  "homepage": "https://github.com/microsoft/WinAppCli",
  "repository": "https://github.com/microsoft/WinAppCli",
  "license": "MIT",
  "keywords": [
    "windows",
    "msix",
    "packaging",
    "installer",
    "identity",
    "electron",
    "winapp",
    "windows app sdk",
    "windows sdk",
    "appxmanifest.xml",
    "appxmanifest",
    "code signing",
    "certificate",
    "pfx",
    "signtool",
    "makeappx",
    "windows store",
    "microsoft store",
    "windows distribution",
    "windows packaging",
    "windows installer",
    "package identity",
    "sparse package",
    "push notifications",
    "background tasks",
    "share target",
    "startup task",
    "tauri",
    "flutter",
    "rust",
    "dotnet",
    "wpf",
    "winforms",
    "cpp",
    "cppwinrt",
    "windows api",
    "winrt",
    "uwp",
    "desktop app",
    "win32"
  ],
  "agents": [
    "./com.github.copilot/agents/winapp.agent.md"
  ]
}
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. yesterday First seen · 58 lines scan A 2ec6266512e3

Subscribe to this mod's changes

winapp is a plugin published in the GitHub repository microsoft/winappCli (1,205 stars, last pushed 3d 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.