A .NET framework for making applications that share code across Android, iPhone and iPad, macOS, and Windows. It covers user interfaces, device features, navigation, and platform-specific packaging.

Use it to build or review cross-platform mobile and desktop apps, connect to device capabilities, set up navigation, apply the MVVM pattern, and package apps for each supported platform.

It helps organize what can be shared between platforms while handling differences such as permissions, app lifecycles, native APIs, and build requirements. It also guides migrations from Xamarin.Forms.

maui — Skill for Claude Code and Codex by managedcode/dotnet-skills

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.

Any agent

npx skills add managedcode/dotnet-skills --skill maui

Clone the repo

git clone --depth 1 https://github.com/managedcode/dotnet-skills

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/managedcode/dotnet-skills/maui/github.svg)](https://agentmods.dev/skills/managedcode/dotnet-skills/maui)

Your own site

<a href="https://agentmods.dev/skills/managedcode/dotnet-skills/maui"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/maui/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/managedcode/dotnet-skills/maui"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/maui.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 121 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,340 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. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found 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.

Model	Per session	Once invoked
Fable 5.1	$0.00121	$0.02340
Opus 5.5	$0.00048	$0.00936
Sonnet 5.5	$0.00024	$0.00468
Haiku 4.5	$0.00012	$0.00234

Measured 1mo ago against content hash 3381899fa8de, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

maui 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 1mo 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.

catalog/Frameworks/MAUI/skills/maui/SKILL.md · 324 lines

How it starts

The opening of the file, as written. The whole thing — 324 lines — stays where its author put it; the contents beside it link to each section on GitHub.

.NET MAUI

Trigger On

working on cross-platform mobile or desktop UI in .NET MAUI
integrating device capabilities, navigation, or platform-specific code
migrating Xamarin.Forms or aligning a shared codebase across targets
implementing MVVM patterns in mobile apps

Documentation

References

patterns.md - Shell navigation, platform-specific code, messaging, lifecycle, data binding, and CollectionView patterns
anti-patterns.md - Common MAUI mistakes and how to avoid them

Platform Targets

Platform	Build Host	Notes
Android	Windows/Mac	Emulator or device
iOS	Mac only	Requires Xcode
macOS	Mac only	Catalyst
Windows	Windows	WinUI 3

Workflow

Confirm target platforms — behavior differs across Android, iOS, Mac, Windows
Separate shared UI and platform code — use handlers and DI
Follow MVVM pattern — keep views dumb, logic in ViewModels
Handle lifecycle and permissions — platform contracts need testing
Test on real devices — emulators don't catch everything

Current Upstream Notes

.NET MAUI 10.0.100 is a broad quality release for the 10.0 line. It fixes Android WebView gestures inside SwipeView, RenderThread crashes and synthetic about:blank history; iOS WebView file/reload behavior; Shell regressions; XAML source-generation AOT paths; adaptive-trigger leaks; shared/custom Platforms mappings; status-bar contrast, window metrics, and SafeArea behavior.
After upgrading MAUI packages, smoke-test grouped and virtualized CollectionView flows, Shell/modal/back navigation, tabs, keyboard and SafeArea interactions, maps, WebView/HybridWebView lifecycle, memory retention, and accessibility narration on every shipped target.
The August 2026 .NET MAUI Learn overview for net-maui-10.0 still frames the platform around a shared single-project app, native API access, handlers, and optional Blazor Hybrid UI. Verify each target platform rather than treating shared code as identical runtime behavior.

Read the full file on GitHub · 324 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

1mo ago First seen · 324 lines · 121 tokens per session scan A 3381899fa8de

Subscribe to this mod's changes

maui is a skill published in the GitHub repository managedcode/dotnet-skills (490 stars, last pushed 2d ago), licensed MIT. It adds 121 tokens to every session and 2,340 once invoked, about $0.0005 per session on Opus 5.5. 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.

C# and .NET Claude Code Languages Mobile codex copilot dotnet dotnet-skills skills

xamarin-maui-framework-migration

Baseline migration skill for moving Xamarin.Forms solutions or copied modules to .NET MAUI using a create-new-project workflow.

syncfusion/xamarin-maui-migration-skills · 31 tokens

xamarin-maui-platform-specific-migration

Companion migration skill for Android, iOS, and Windows platform-specific tasks when moving Xamarin.Forms code to .NET MAUI.

syncfusion/xamarin-maui-migration-skills · 35 tokens

xamarin-maui-renderer-handler-migration

Companion migration skill for converting Xamarin.Forms custom renderers and effects to .NET MAUI handlers.

syncfusion/xamarin-maui-migration-skills · 30 tokens

android-java-bindings

Write and repair C# bindings for Java/Kotlin Android libraries with .NET for Android. USE FOR: direct/full AAR or JAR bindings, AndroidMavenLibrary, Metadata.xml, Additions, missing generated APIs, Kotlin JVM signatures, binding-generator warnings, CS0535/CS0738/CS0534, duplicate members, EventArgs, listener Handler…

dotnet/maui-labs · 134 tokens

android-slim-bindings

Create Android slim bindings for MAUI/.NET Android. USE FOR: Native Library Interop, thin Kotlin/Java wrapper design, building wrapper AARs with Gradle, Java-friendly callbacks, @JvmStatic, and dependencies of slim wrappers. DO NOT USE FOR: direct/full Java/Kotlin bindings or generated-code/Metadata.xml repairs (use…

dotnet/maui-labs · 96 tokens

maui-notifications-deep-links

Implement MAUI notifications and deep links. USE FOR: local/push notifications, FCM HTTP v1 migration, APNs/Azure Notification Hubs, permission UX, Android channels/POSTNOTIFICATIONS, iOS UNUserNotificationCenter, token lifecycle, notification tap navigation, app links/universal links/URI schemes. DO NOT USE FOR…

dotnet/maui-labs · 90 tokens