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dart-language

Apply modern Dart language and API patterns in non-concurrency code. Use for types, records, patterns, sealed classes, extensions, constructors, null safety, collections, and package APIs; route async and isolate work to dart-concurrency.

Quality

87%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

The canonical home for this skill is thiennc-tesoglobal/flutter-skills

SKILL.md
Quality
Evals
Security

Quality

Content

86%Weight 40%Scale 1-5

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

An exemplary lean skill body: dense decision guidance with concrete file and tool references, explicit boundary routing, condition-gated one-level-deep references that all resolve to real files, and a verification section with fallbacks. The only gap is the absence of executable commands in verification and a couple of implicit step orderings.

DimensionReasoningScore

Conciseness

Lean and padding-free: every line is a directive, boundary, or pointer ("Write clear Dart that fits the project's SDK constraint and established style"), with no explanation of concepts Claude already knows — every token earns its place.

5 / 5

Actionability

Concrete decision rules cite specific files, globs, and tools ("Read the SDK constraint in `pubspec.yaml`", "`*.g.dart`, `*.freezed.dart`", "freezed, json_serializable"), but guidance like "Run formatting, static analysis, and the narrowest relevant tests" stops short of executable commands, leaving minor gaps versus fully copy-paste-ready anchor 5.

4 / 5

Workflow Clarity

Sequencing is explicit where it matters ("before using newer syntax") and the Verification section includes a fallback path ("Use Dart MCP semantic lookup... otherwise inspect source and use the project CLI") plus downstream call-site checks, but verification steps are unsequenced and lack error-recovery feedback loops, falling short of anchor 5's explicit checkpoints.

4 / 5

Progressive Disclosure

A clear overview (Decisions / Verification / Boundaries / References / Sources) with three well-signaled, one-level-deep references each gated by a condition ("Read [patterns and records migration]... when adopting pattern matching, destructuring, switch expressions, or multiple returns"); all referenced files exist in references/ and contain no nested references.

5 / 5

Total

18

/

20

Passed

Description

83%Weight 40%Scale 1-5

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

A strong description with an explicit 'Use for' trigger clause enumerating concrete Dart topics and clear boundary routing to dart-concurrency. It answers both what and when clearly; the only room for improvement is broader synonym coverage and slightly more varied action verbs.

DimensionReasoningScore

Specificity

Names the domain and enumerates many concrete capability areas ("types, records, patterns, sealed classes, extensions, constructors, null safety, collections, and package APIs") plus a routing action ("route async and isolate work to dart-concurrency"), but most scope hangs off a single umbrella verb ("Apply modern Dart language and API patterns") rather than multiple distinct actions, so it sits below the multi-action anchor 5 and above the 1-2-action anchor 3.

4 / 5

Completeness

Explicitly answers both: what ("Apply modern Dart language and API patterns in non-concurrency code") and when ("Use for types, records, patterns, sealed classes, extensions, constructors, null safety, collections, and package APIs") with concrete trigger phrases, mirroring the anchor-5 example; the 'when' clause is fully explicit, so it exceeds anchor 4's 'could be more explicit'.

5 / 5

Trigger Term Quality

Includes natural terms Dart users actually say ("sealed classes", "records", "null safety", "extensions", "constructors"), but coverage is not comprehensive — common variations like "Dart 3", "pattern matching" in full, or "enums" are missing, matching "good keyword coverage; a few natural terms missing".

4 / 5

Distinctiveness Conflict Risk

Carves a clear Dart-language niche and explicitly routes async/isolate work to "dart-concurrency", reducing the biggest sibling conflict, but "package APIs" is broad and overlap with a Flutter skill is unaddressed in the description, fitting "mostly distinct; minor overlap risk with closely related skills" rather than anchor 5's minimal risk.

4 / 5

Total

17

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

thienqo/flutter-skills

Path

skills/dart-language/SKILL.md

Reviewed

Table of Contents

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