jbvc/flutter-expert
Master Flutter development with Dart 3, advanced widgets, and multi-platform deployment. Handles state management, animations, testing, and performance optimization for mobile, web, desktop, and embedded platforms. Use PROACTIVELY for Flutter architecture, UI implementation, or cross-platform features.
52
52%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Quality
Discovery
75%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description adequately identifies the Flutter/Dart domain and provides explicit 'when to use' guidance, which is a strength. However, the capabilities listed are broad categories (state management, animations, testing) rather than specific concrete actions, and the trigger terms could be expanded to include more natural user language and specific Flutter ecosystem terms. The word 'Master' at the beginning is somewhat fluffy and doesn't add functional value.
Suggestions
Replace broad categories with more specific actions, e.g., 'Builds widget trees, configures state management with Provider/Riverpod/BLoC, implements custom animations and transitions, writes widget and integration tests'.
Add more natural trigger terms users would say, such as 'pubspec.yaml', '.dart files', 'hot reload', 'MaterialApp', 'Scaffold', or specific state management library names like 'Provider', 'Riverpod', 'BLoC'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Flutter/Dart) and lists several action areas (state management, animations, testing, performance optimization), but these are broad categories rather than specific concrete actions like 'create widget trees' or 'configure platform-specific build settings'. | 2 / 3 |
Completeness | Clearly answers both 'what' (Flutter development with state management, animations, testing, performance optimization, multi-platform deployment) and 'when' ('Use PROACTIVELY for Flutter architecture, UI implementation, or cross-platform features'), providing explicit trigger guidance. | 3 / 3 |
Trigger Term Quality | Includes relevant keywords like 'Flutter', 'Dart 3', 'widgets', 'state management', 'animations', 'mobile', 'web', 'desktop', but misses common user terms like '.dart files', 'MaterialApp', 'pubspec.yaml', 'hot reload', 'Provider', 'Riverpod', 'BLoC', or specific framework terms users would naturally mention. | 2 / 3 |
Distinctiveness Conflict Risk | Flutter/Dart is a distinct enough technology niche that this is unlikely to conflict with other skills. The specific mention of Flutter, Dart 3, widgets, and cross-platform deployment creates a clear, distinguishable identity. | 3 / 3 |
Total | 10 / 12 Passed |
Implementation
7%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is essentially a persona/role description rather than an actionable skill document. It exhaustively lists Flutter topics and capabilities that Claude already knows, without providing any concrete code, specific commands, or executable guidance. The content would be far more effective if it were reduced to ~20 lines of project-specific conventions, architectural decisions, and code examples, with detailed playbooks linked as separate files.
Suggestions
Replace the extensive capability lists with concrete, executable code examples for the most common Flutter tasks (e.g., a Riverpod setup snippet, a platform channel template, a widget test example).
Remove all sections that merely enumerate Claude's existing knowledge (Core Flutter Mastery, Dart Language Expertise, etc.) and replace with project-specific conventions, preferred patterns, and anti-patterns to avoid.
Add clear multi-step workflows with validation checkpoints for key processes like 'setting up a new Flutter project', 'adding a new feature module', or 'deploying to app stores'.
Move detailed reference material into linked files (e.g., state-management-guide.md, testing-strategy.md) and keep SKILL.md as a concise overview with quick-start guidance.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Extremely verbose and padded with information Claude already knows. The bulk of the content is a massive enumeration of Flutter concepts, libraries, and capabilities that Claude is already trained on. Lists like 'Core Flutter Mastery', 'Dart Language Expertise', 'State Management Excellence' etc. are essentially restating Claude's existing knowledge rather than adding new, specific guidance. | 1 / 3 |
Actionability | Contains zero executable code, no concrete commands, and no specific examples. Everything is abstract description ('Implement complex animations with custom painters') rather than actual implementation guidance. The 'Instructions' section is four generic bullet points with no Flutter-specific actionable content. | 1 / 3 |
Workflow Clarity | The 'Response Approach' section lists 8 high-level steps but they are vague and lack any validation checkpoints, concrete sequencing, or feedback loops. There is no clear workflow for any specific Flutter task - just abstract directives like 'Analyze requirements' and 'Optimize for performance'. | 1 / 3 |
Progressive Disclosure | There is one reference to an external file ('resources/implementation-playbook.md') which is good, but the main content is a monolithic wall of bullet-point lists that should have been split into separate reference files. The massive capability lists would be better served as linked references rather than inline content. | 2 / 3 |
Total | 5 / 12 Passed |
Validation
90%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
metadata_version | 'metadata.version' is missing | Warning |
Total | 10 / 11 Passed | |
Reviewed
Table of Contents