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 Harishwarrior/flutter-claude-skills --skill flutter-testergit clone --depth 1 https://github.com/Harishwarrior/flutter-claude-skillsWrote 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/harishwarrior/flutter-claude-skills/flutter-tester)<a href="https://agentmods.dev/skills/harishwarrior/flutter-claude-skills/flutter-tester"><img src="https://agentmods.dev/badge/skills/harishwarrior/flutter-claude-skills/flutter-tester/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/harishwarrior/flutter-claude-skills/flutter-tester"><img src="https://agentmods.dev/badge/skills/harishwarrior/flutter-claude-skills/flutter-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- 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 | $0.00065 | $0.01416 |
| Opus 5.5 | $0.00026 | $0.00566 |
| Sonnet 5.5 | $0.00013 | $0.00283 |
| Haiku 4.5 | $0.00006 | $0.00142 |
Grade A, and why
flutter-tester 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 — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flutter Tester
Requirements
- Flutter project with
flutter_testdependency - Works with Riverpod, Mockito, and GetIt
- Run
dart run build_runner buildto generate mocks after adding@GenerateMocksannotations - Compatible with FVM (
fvm flutter testinstead offlutter test)
Overview
Test each architectural layer in isolation using Given-When-Then structure. Always test both success and error paths. Never mock providers — override their dependencies instead.
Reference Files
Load the relevant file based on what you're testing:
| What you're testing | Reference file |
|---|---|
| Repository, DAO, Service logic | references/layer_testing_patterns.md |
| Widget UI, interactions, dialogs, navigation | references/widget_testing_guide.md |
| Riverpod provider state, mutations, lifecycle | references/riverpod_testing_guide.md |
Core Principles
1. Layer Isolation
Test each layer against its own mocked dependencies:
| Layer | What to test | What to mock |
|---|---|---|
| Repository | Data coordination between sources | DAOs, APIs, Logger |
| DAO | Database CRUD operations | Use real in-memory DB, mock Logger |
| Provider | State management and transitions | Services, Repositories |
| Service | Business logic and workflows | Repositories, Network clients |
| Widget | UI behaviour and interactions | Provider dependencies (via overrides) |
2. Given-When-Then Structure
test('Given valid data, When fetchUsers called, Then returns user list', () async {
// Arrange (Given)
when(mockDAO.fetchAll()).thenAnswer((_) async => expectedUsers);
// Act (When)
final result = await repository.fetchUsers();
// Assert (Then)
expect(result, equals(expectedUsers));
verify(mockDAO.fetchAll()).called(1);
});
3. Test Organisation
group('UserRepository', () {
group('fetchUsers', () {
setUp(() { /* init mocks, register with GetIt */ });
tearDown(() => GetIt.I.reset()); // Always reset GetIt
test('Given success ... When ... Then ...', () { });
test('Given error ... When ... Then ...', () { });
});
});
What ships with it
3 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 · 169 lines · 65 tokens per session scan A c857fefd1fb3
flutter-tester is a skill published in the GitHub repository Harishwarrior/flutter-claude-skills (66 stars, last pushed 3mo ago), licensed MIT. It adds 65 tokens to every session and 1,416 once invoked, about $0.0003 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.
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