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 rules/sampaio-tech/flutter-core-modules/feature-themegit clone --depth 1 https://github.com/sampaio-tech/flutter-core-modulesWhat 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 | $0.00000 | $0.01231 |
| Opus 5 | $0.00000 | $0.00616 |
| Sonnet 5 | $0.00000 | $0.00246 |
| Haiku 4.5 | $0.00000 | $0.00123 |
Grade A, and why
feature-theme 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.
How it starts
The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Feature: Theme — Rules
What Is Already Implemented — Check Before Building
| Capability | Status |
|---|---|
| Persist dark/light theme preference | ✅ SetThemeDataUsecase |
| Restore theme on app start (sync read) | ✅ ThemeStateNotifier constructor |
| Reactive theme updates across app | ✅ themeStateNotifierProvider (non-autoDispose) |
| Reset to system theme | ✅ RemoveThemeDataUsecase / notifier.removeThemeData() |
| Preview theme without saving | ✅ notifier.setThemeData(save: false) |
| Dark/Light mode toggle row widget | ✅ ThemeRowWidget |
| System theme detection | ❌ Not in package — use MediaQuery.platformBrightnessOf(context) when state is null |
| Multiple custom themes beyond light/dark | ❌ Only IosLightThemeData / IosDarkThemeData supported |
Before adding theme code, verify whether the above already satisfies the requirement.
Layer Structure
lib/src/features/theme/
├── domain/
│ ├── repositories/theme_repository.dart # abstract ThemeRepository
│ └── usecases/
│ ├── get_theme_data_usecase.dart
│ ├── set_theme_data_usecase.dart
│ └── remove_theme_data_usecase.dart
├── data/
│ └── repositories/theme_repository.dart # ThemeRepositoryImpl + provider
└── presentation/
└── notifiers/
└── theme_state_notifier.dart # ThemeStateNotifier + themeStateNotifierProvider
Wiring Theme to the App Root
class MyApp extends HookConsumerWidget {
@override
Widget build(BuildContext context, WidgetRef ref) {
final themeData = ref.watch(themeStateNotifierProvider); // IosThemeData?
return IosTheme(
data: themeData ?? IosLightThemeData(), // null = fallback to light
child: CupertinoApp(
theme: CupertinoThemeData(
brightness: switch (themeData) {
null => Brightness.light,
IosLightThemeData() => Brightness.light,
IosDarkThemeData() => Brightness.dark,
},
),
),
);
}
}
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 · 154 lines · 0 tokens per session scan A d9c2a23e1a45
feature-theme is a cursor rule published in the GitHub repository sampaio-tech/flutter-core-modules (2 stars, last pushed 10d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,231 tokens. 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 2026-08-31.
Other cursor rules, from other repositories
cursorrules
Kortix is a React Native + Expo app built with TypeScript, NativeWind (Tailwind CSS), and a custom design system.
git-commit-attribution
Git commits must use the human developer identity only; never Cursor Agent co-authorship.
android-viewmodel
Android ViewModel conventions — StateFlow, repository abstraction, coroutines, no LiveData.
project-structure
Cursor rule "project-structure" from HeeGyeong/ComposeSample, covering project structure guide, layer structure, modularization rules, dependency rules and resource management.
cursorrules
ROLE: Android Development Expert EXPERIENCELEVEL: Advanced (10+ years) SPECIALTIES.
ios-ui-development-focus
UI/UX and SwiftUI best practices - HIG compliance, presentation APIs, layout patterns.