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.
npx agentmods add instructions/dotnet/maui/threading-asyncgit clone --depth 1 https://github.com/dotnet/mauiWhat 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 | $0.00373 | $0.00373 |
| Opus 5 | $0.00187 | $0.00187 |
| Sonnet 5 | $0.00075 | $0.00075 |
| Haiku 4.5 | $0.00037 | $0.00037 |
Grade A, and why
maui threading-async.instructions.md 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.
What it actually says
Threading and Async Patterns
UI Thread Dispatch
- Platform view modifications MUST happen on the UI thread
- Android:
platformView.Post(() => { })orLooper.MainLooperfor thread checks - iOS/MacCatalyst:
MainThread.BeginInvokeOnMainThread()orDispatchQueue.MainQueue - Windows:
DispatcherQueue.TryEnqueue()— be aware of COM threading apartment model
Async Handler Operations
- Use
.FireAndForget(handler)for async work in mapper methods — never bareasync void - After
await, verify the handler is still connected (VirtualView != null) before applying results - Thread
CancellationTokenthrough long-running operations and check at appropriate yield points
Race Condition Prevention
- Concurrent access to shared state must use
lock,Interlocked, or immutable patterns - Image loading and other async pipelines must cancel in-flight operations when the source changes
- Guard against stale callbacks — platform callbacks may fire after
DisconnectHandler
Platform-Specific Patterns
- Android: API-level checks use
Build.VERSION.SdkIntcomparison, not version string parsing - iOS: Use
System.OperatingSystem.IsIOSVersionAtLeast()for linker-friendly runtime checks - Windows: WinUI version checks may be needed for features in specific Windows App SDK versions
- Use
System.OperatingSystemAPIs overRuntimeInformation— they are trimmer/AOT-friendly
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.
- yesterday First seen · 35 lines · 373 tokens per session scan A 6eab7df92cc8
maui threading-async.instructions.md is an instructions file published in the GitHub repository dotnet/maui (23,317 stars, last pushed yesterday), licensed MIT. It adds 373 tokens to every session, about $0.0019 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 instructions, from other repositories
azure-sdk-for-net AGENTS.md
Instructions for Azure/azure-sdk-for-net, covering azure sdk for .net - ai agent guidelines, repository overview, purpose and scope, repository structure and agent interaction guidelines.
azure-sdk-for-net copilot-instructions.md
Instructions for Azure/azure-sdk-for-net, covering project overview, prerequisites, folder structure, azure generator and azure management generator.
BlazorBindings.Maui AGENTS.md
Instructions for Dreamescaper/BlazorBindings.Maui, covering mobile guidelines, platform, razor and component conventions and blazor bindings generation.
happy AGENTS.md
Instructions for slopus/happy, covering agent workflow and sync to main.
ULogViewer AGENTS.md
Instructions for carina-studio/ULogViewer, covering agents.md, coding style, naming, formatting & structure and fields & properties.
maui-labs AGENTS.md
Instructions for dotnet/maui-labs, covering agent instructions, repository overview, products, technology stack and building.