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 skills add HoangNguyen0403/agent-skills-standard --skill flutter-bloc-state-managementgit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/skills/hoangnguyen0403/agent-skills-standard/flutter-bloc-state-management)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/flutter-bloc-state-management"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/flutter-bloc-state-management/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/skills/hoangnguyen0403/agent-skills-standard/flutter-bloc-state-management"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/flutter-bloc-state-management.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00052 | $0.00790 |
| Opus 5.5 | $0.00021 | $0.00316 |
| Sonnet 5.5 | $0.00010 | $0.00158 |
| Haiku 4.5 | $0.00005 | $0.00079 |
Grade A, and why
flutter-bloc-state-management 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.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
BLoC State Management
Priority: P0 (CRITICAL)
Role: Flutter State Management Expert. Design predictable, testable state flows.
State Design Workflow
- Define Events: What happens? (UserTap, ApiSuccess). Use
@freezed. - Define States: What needs to show? (Initial, Loading, Data, Error).
- Implement BLoC: Map Events to States using
on<Event>. - Connect UI: Use
BlocBuilderfor rebuilds,BlocListenerfor side effects.
Implementation Guidelines
- States & Events: Use @freezed for union types (e.g.,
Initial,Loading,Success,Failurestates). - Error Handling: Emit
Failurestates for UI-critical errors. For silent/background events, either let exceptions propagate naturally to globalonErrorinterceptor (e.g., inAppBlocObserver), or catch and calladdError(e, st)without emitting error state. - Async Data: Use emit.forEach for streams or await with
emitcall. - Concurrency: Use transformer: restartable() from
bloc_concurrencyfor search/typeahead to debounce and cancel previous requests. - UI Connectivity: Use BlocBuilder for UI rebuilds (e.g., loading spinner, data list, error message) and BlocListener for side effects (navigation, snackbars).
- Testing: Use blocTest for ALL states and verify sequence of emitted states.
Verification Checklist (Mandatory)
- Initial State: Defined and tested?
- Test Coverage:
blocTestused for ALL states? - UI Logic: No complex calculation in
BlocBuilder? - Side Effects: Navigation/Snackbars in
BlocListener(NOT Builder)?
Anti-Patterns
- No .then(): Use
awaitoremit.forEach()to emit. - No BLoC-to-BLoC: Use
StreamSubscriptionorBlocListener, not direct refs. - No Logic in Builder: Move valid logic to BLoC.
- No BlocBuilder without buildWhen: Heavy subtrees must declare
buildWhenpredicate to prevent unnecessary rebuilds.
Verification
- Every BLoC has
blocTestcovering Initial → Loading → Success and Initial → Loading → Failure. - Side effects (navigation, snackbars) use
BlocListener, notBlocBuilder. - Heavy
BlocBuilderwidgets declarebuildWhen. -
flutter testpasses.
What ships with it
2 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.
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 · 73 lines · 52 tokens per session scan A ed07a0377c12
flutter-bloc-state-management is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (582 stars, last pushed today), licensed MIT. It adds 52 tokens to every session and 790 once invoked, about $0.0002 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 2026-09-03.
Other skills, from other repositories
writing-tests
Kiro Crew repo only: how to write a backend pytest test with NO side effects that does not flake. Use when adding, editing, reviewing or debugging a test there: which conftest applies, what leaks (temp dirs, data home, /.kiro, cron, threads), the seven flake classes, cross-platform traps.
dashboard-template
Kiro Crew repo only: load this when a task will author or change a dashboard page. A page never ships alone: the same PR carries its TypedDict contract, its provider, and a parity test that the two agree. Scaffold all four from one field list; read numbers from an existing fold, never type them.
mobile-automation
Control Android and iOS devices, emulators and simulators — launch apps, tap, swipe, type, take screenshots, read the accessibility tree. Use when a task involves a mobile device or app, mobile UI testing, or reproducing a bug on a phone.
test-triage
Use before writing, adding, or modifying any unit test in this repo — before creating a Test.kt file or a @Test function, and before touching an existing test after a refactor. Triages whether the test should exist at all, and what must happen to it when the code it guards changes.
test-hang-watchdog
Prevent and diagnose hanging or long-running Gradle unit tests (> 30s) in Android/Kotlin coroutines codebases. Use when running tests, when a test execution takes unexpectedly long, when background test tasks appear frozen, or when taking thread dumps (jstack) to unblock coroutine deadlocks.
zafiro-qa
An Android quality-assurance workflow for testing the Zafiro app on a real phone or emulator. It uses one installed app as the test controller and a separate debug app as the app under test, with screenshots, device actions, settings, and logs.