flutter-expert

Master Flutter development with Dart 3, advanced widgets, and multi-platform deployment.

Quality

14%

Does it follow best practices?

Impact

Pending

No eval scenarios have been run

Securityby

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./skills/flutter-expert/SKILL.md

Quality

Discovery

22%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

This description reads more like a course title than a skill description. It lacks concrete actions, has no 'Use when...' clause, and uses aspirational language ('Master') rather than describing what the skill actually does. While it mentions Flutter and Dart 3 which provide some domain specificity, it fails to communicate specific capabilities or trigger conditions.

Suggestions

Replace 'Master Flutter development' with specific actions like 'Creates Flutter apps, builds custom widgets, manages state with Provider/Riverpod, configures multi-platform builds for iOS, Android, and web'.

Add an explicit 'Use when...' clause such as 'Use when the user asks about Flutter, Dart, mobile app development, cross-platform apps, or building iOS/Android/web applications with Flutter'.

Remove aspirational language ('Master') and use third-person action verbs to describe concrete capabilities the skill provides.

Dimension	Reasoning	Score
Specificity	The description uses vague language like 'Master Flutter development' and 'advanced widgets' without listing any concrete actions. There are no specific capabilities described—no verbs like 'create', 'build', 'debug', or 'deploy'.	1 / 3
Completeness	The description vaguely addresses 'what' (Flutter development) but has no 'when' clause or explicit trigger guidance. The lack of a 'Use when...' clause caps this at 2 per the rubric, and the 'what' is also weak, so it scores 1.	1 / 3
Trigger Term Quality	It includes some relevant keywords like 'Flutter', 'Dart 3', 'widgets', and 'multi-platform deployment' that users might mention, but misses common variations like 'mobile app', 'iOS', 'Android', 'web app', 'cross-platform', or specific tasks like 'state management' or 'UI layout'.	2 / 3
Distinctiveness Conflict Risk	Mentioning 'Flutter' and 'Dart 3' specifically provides some distinctiveness from general coding skills, but 'advanced widgets' and 'multi-platform deployment' are vague enough to overlap with other mobile or cross-platform development skills.	2 / 3
	Total	6 / 12 Passed

Implementation

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

This skill reads as a persona description or capability catalog rather than an actionable skill file. It exhaustively lists Flutter topics and concepts 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% of its current size and replaced the topic listings with specific, actionable patterns, code examples, and validation workflows.

Suggestions

Replace the extensive 'Capabilities' bullet lists with 3-5 concrete, executable code examples showing specific Flutter patterns (e.g., Riverpod setup, platform channel implementation, widget testing).

Add specific validation/verification steps for common Flutter workflows like build, test, and deploy (e.g., 'Run `flutter analyze` before committing, then `flutter test --coverage` to verify >80% coverage').

Remove sections that describe concepts Claude already knows (Dart language features, architecture pattern definitions, library listings) and focus only on project-specific conventions or non-obvious guidance.

Create actual bundle resource files (e.g., implementation-playbook.md, architecture-templates.md) with concrete examples, and keep SKILL.md as a concise overview pointing to them.

Dimension	Reasoning	Score
Conciseness	Extremely verbose and padded with information Claude already knows. The massive 'Capabilities' section is essentially a resume listing Flutter topics (state management libraries, architecture patterns, testing strategies, etc.) without providing any actionable guidance. Most of the content describes what Claude should know rather than teaching anything new or specific.	1 / 3
Actionability	Contains zero executable code, no concrete commands, no specific examples, and no copy-paste ready snippets. Everything is abstract description ('Implement comprehensive error handling', 'Optimize for performance') rather than concrete instructions. The 'Example Interactions' section lists prompts rather than actual input/output examples.	1 / 3
Workflow Clarity	The 'Response Approach' section lists 8 high-level steps but they are vague directives ('Analyze requirements', 'Recommend state management') with no validation checkpoints, no feedback loops, and no concrete sequencing. There is no clear workflow for any specific Flutter task.	1 / 3
Progressive Disclosure	There is one reference to `resources/implementation-playbook.md` for detailed examples, which is a reasonable attempt at progressive disclosure. However, no bundle files are provided to support this reference, and the massive inline content (capabilities lists, knowledge base, etc.) should have been split into separate reference files rather than included in the main skill body.	2 / 3
	Total	5 / 12 Passed

Validation

90%

Warnings & errors only

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
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	10 / 11 Passed

Repository: sickn33/antigravity-awesome-skills
Commit: 9d0b37c

Reviewed: about 15 hours ago

Table of Contents

Discovery Implementation Validation

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