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flutter-implement-json-serialization

Create model classes with `fromJson` and `toJson` methods using `dart:convert`. Use when manually mapping JSON keys to class properties for simple data structures.

71

Quality

88%

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SKILL.md
Quality
Evals
Security

Quality

Content

88%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.

A high-quality, action-oriented skill body with executable examples, clear checklisted workflows, and explicit validation steps. The main minor improvement would be trimming redundant comments and possibly splitting the example set into a reference file.

Suggestions

Remove redundant inline code comments (e.g. "Factory constructor for deserialization", "Method for serialization") since the method names are self-documenting.

Consolidate the Core Guidelines bullets that restate what the worked examples already demonstrate to reduce repetition.

If the example set grows, move the background-parsing example into a references/ file and link to it from the body for cleaner progressive disclosure.

DimensionReasoningScore

Conciseness

Lean, well-structured guidance that assumes Claude's competence (no explanations of what JSON or Flutter is); a few redundant framing comments (e.g. "Factory constructor for deserialization") and overlap between Core Guidelines and the worked examples keep it just below 5.

4 / 5

Actionability

Provides three complete, copy-paste-ready Dart examples (model, synchronous fetch, background `compute()` parsing) covering the common cases, fully executable with imports.

5 / 5

Workflow Clarity

Both workflows are clearly sequenced with Task Progress checklists and explicit validation/feedback loops ("Run validator -> review type mismatch errors -> fix casting logic", "Validate Response", "Execute unit tests").

5 / 5

Progressive Disclosure

Well-organized single file with a Contents TOC and clear sections; at ~146 lines with all content inlined it stays just short of the cleanly-split ideal, though no external references are truly needed here.

4 / 5

Total

18

/

20

Passed

Description

87%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, concise description that clearly states both capability and trigger conditions with concrete, distinguishable language. Minor additional keyword synonyms would round it out.

DimensionReasoningScore

Specificity

Quotes concrete actions — "Create model classes with `fromJson` and `toJson` methods using `dart:convert`" — naming the domain and several specific actions; falls short of 5 because it does not enumerate a broad, comprehensive set of actions.

4 / 5

Completeness

It explicitly states what it does ("Create model classes with `fromJson` and `toJson` methods using `dart:convert`") and when to use it ("Use when manually mapping JSON keys to class properties for simple data structures"), with concrete trigger phrases.

5 / 5

Trigger Term Quality

Natural terms like "JSON", "mapping JSON keys", "class properties", and "fromJson/toJson" appear; below 5 because common synonyms like "serialize/deserialize", "Flutter", or "Dart" are absent.

4 / 5

Distinctiveness Conflict Risk

The "manually mapping JSON keys" framing carves a clear niche distinct from code-generation approaches (e.g. json_serializable), minimizing conflict risk.

5 / 5

Total

18

/

20

Passed

Validation

93%

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

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

Total

15

/

16

Passed

Repository
flutter/agent-plugins
Reviewed

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