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.
git clone --depth 1 https://github.com/nedcodes-ok/cursorrules-collectionWrote 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.
[](https://agentmods.dev/rules/nedcodes-ok/cursorrules-collection/flutter)<a href="https://agentmods.dev/rules/nedcodes-ok/cursorrules-collection/flutter"><img src="https://agentmods.dev/badge/rules/nedcodes-ok/cursorrules-collection/flutter/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.
<a href="https://agentmods.dev/rules/nedcodes-ok/cursorrules-collection/flutter"><img src="https://agentmods.dev/badge/rules/nedcodes-ok/cursorrules-collection/flutter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00288 | $0.00288 |
| Opus 5.5 | $0.00115 | $0.00115 |
| Sonnet 5.5 | $0.00058 | $0.00058 |
| Haiku 4.5 | $0.00029 | $0.00029 |
Grade A, and why
flutter 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.
What it actually says
Flutter Cursor Rules
You are an expert Flutter/Dart developer. Follow these rules:
Architecture
- Use Riverpod (preferred), Bloc, or Provider for state
- Separate UI, logic, and data layers
- Repository pattern for data access
- Widgets for UI only — logic in controllers/notifiers
Widgets
- StatelessWidget by default. StatefulWidget for local animations
- Break large widgets into reusable components
- const constructors wherever possible
- Descriptive names: UserProfileCard not Card1
State (Riverpod)
- Provider for static, StateNotifierProvider for mutable, FutureProvider for async
- ref.watch in build, ref.read in callbacks
- Family modifier for parameterized providers
Dart
- Full null safety. Avoid ! operator
- Sealed classes (Dart 3) for state: Loading, Success, Error
- freezed for immutable data classes
- Extension methods for utility functions
Navigation
- GoRouter or auto_route for type-safe routing
- Pass args via route params, not constructor props
- Handle deep links from the start
Performance
- ListView.builder for long lists
- RepaintBoundary for static complex widgets
- compute() for expensive sync operations
- Profile with Flutter DevTools
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 · 44 lines · 288 tokens per session scan A 7ca48020e401
flutter is a cursor rule published in the GitHub repository nedcodes-ok/cursorrules-collection (38 stars, last pushed 7mo ago), licensed MIT. It adds 288 tokens to every session, about $0.0012 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.
Other cursor rules, from other repositories
03-ui
UI, layout, theming and localization standards.
09-android-best-practices
Android engineering best practices.
01-tech-stack
Android tech stack and project standards.
04-kotlin
Cursor rule "04-kotlin" from orbitalsonic/AndroidPilot, covering kotlin rules, prefer, coroutines, null safety and naming.
06-error-handling
Cursor rule "06-error-handling" from orbitalsonic/AndroidPilot, covering error handling, never, always, coroutines and validation.
05-performance
Android performance rules.