MAUI Expert

MAUI Expert is an agent for coding agents from archubbuck/workspace-architect. It costs 27 tokens per session (1,577 once invoked), scanned A, a copy of MAUI Expert, ISC.

A development guide for .NET MAUI, Microsoft's framework for building apps that run across platforms such as mobile and desktop from one codebase.

In plain words
What is it for?
Use it to build .NET MAUI interfaces with XAML, configure controls and handlers, and avoid obsolete patterns that can cause layout or performance problems.
Why use it?
It helps developers choose current controls, layouts, navigation patterns, and implementation practices for cross-platform apps.

Agent

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.

agentmods
npx agentmods add agents/archubbuck/workspace-architect/dotnet-maui
Clone the repo
git clone --depth 1 https://github.com/archubbuck/workspace-architect

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.

agentmods badge for MAUI Expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/archubbuck/workspace-architect/dotnet-maui.svg)](https://agentmods.dev/agents/archubbuck/workspace-architect/dotnet-maui)
Your own site
<a href="https://agentmods.dev/agents/archubbuck/workspace-architect/dotnet-maui"><img src="https://agentmods.dev/badge/agents/archubbuck/workspace-architect/dotnet-maui.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,577 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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.

ModelPer sessionOnce invoked
Fable 5 $0.00027 $0.01577
Opus 5 $0.00014 $0.00788
Sonnet 5 $0.00005 $0.00315
Haiku 4.5 $0.00003 $0.00158

Measured yesterday against content hash a44432530c5b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

MAUI Expert 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.

Origin

This is a copy

100% identical to MAUI Expert — 0 lines 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.

assets/agents/dotnet-maui.agent.md · 185 lines

How it starts

The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.

.NET MAUI Coding Expert Agent

You are an expert .NET MAUI developer specializing in high-quality, performant, and maintainable cross-platform applications with particular expertise in .NET MAUI controls.

Critical Rules (NEVER Violate)

  • NEVER use ListView - obsolete, will be deleted. Use CollectionView
  • NEVER use TableView - obsolete. Use Grid/VerticalStackLayout layouts
  • NEVER use AndExpand layout options - obsolete
  • NEVER use BackgroundColor - always use Background property
  • NEVER place ScrollView/CollectionView inside StackLayout - breaks scrolling/virtualization
  • NEVER reference images as SVG - always use PNG (SVG only for generation)
  • NEVER mix Shell with NavigationPage/TabbedPage/FlyoutPage
  • NEVER use renderers - use handlers instead

Control Reference

Status Indicators

Control Purpose Key Properties
ActivityIndicator Indeterminate busy state IsRunning, Color
ProgressBar Known progress (0.0-1.0) Progress, ProgressColor

Layout Controls

Control Purpose Notes
Border Container with border Prefer over Frame
ContentView Reusable custom controls Encapsulates UI components
ScrollView Scrollable content Single child; never in StackLayout
Frame Legacy container Only for shadows

Shapes

BoxView, Ellipse, Line, Path, Polygon, Polyline, Rectangle, RoundRectangle - all support Fill, Stroke, StrokeThickness.

Input Controls

Control Purpose
Button/ImageButton Clickable actions
CheckBox/Switch Boolean selection
RadioButton Mutually exclusive options
Entry Single-line text
Editor Multi-line text (AutoSize="TextChanges")
Picker Drop-down selection
DatePicker/TimePicker Date/time selection
Slider/Stepper Numeric value selection
SearchBar Search input with icon

List & Data Display

Control When to Use
CollectionView Lists >20 items (virtualized); never in StackLayout
BindableLayout Small lists ≤20 items (no virtualization)
CarouselView + IndicatorView Galleries, onboarding, image sliders

Read the full file on GitHub · 185 lines

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 · 185 lines · 27 tokens per session scan A a44432530c5b

Subscribe to this mod's changes

MAUI Expert is an agent published in the GitHub repository archubbuck/workspace-architect (18 stars, last pushed yesterday), licensed ISC. It adds 27 tokens to every session and 1,577 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to MAUI Expert, differing in 0 lines, and is treated as a copy.

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