spring-data-jpa
Designs and implements Spring Data JPA repositories, projections, query patterns, custom repositories, CQRS read models, entity relationships, and persistence performance fixes for Java 25 and Spring Boot 4 projects. Use when the task needs repository-boundary decisions or concrete JPA implementation patterns from this skill. Do not use for generic SQL help or project-wide migration work that belongs in another skill.
94
Quality
92%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Quality
Discovery
100%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 is an excellent skill description that hits all the marks. It provides specific concrete capabilities, uses natural trigger terms that developers would actually say, explicitly states both what it does and when to use it, and includes boundary exclusions to prevent skill conflicts. The third-person voice is used correctly throughout.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'repository-boundary decisions', 'JPA repositories', 'projections', 'query patterns', 'custom repositories', 'CQRS read models', 'entity relationships', and 'persistence performance fixes'. These are concrete, actionable capabilities. | 3 / 3 |
Completeness | Clearly answers both what (designs/implements JPA repositories, projections, query patterns, etc.) AND when ('Use when the task needs repository-boundary decisions or concrete JPA implementation patterns'). Also includes explicit exclusions ('Do not use for generic SQL help or project-wide migration work'). | 3 / 3 |
Trigger Term Quality | Includes natural keywords users would say: 'Spring Data JPA', 'repositories', 'projections', 'query patterns', 'entity relationships', 'JPA', 'persistence', 'Java 25', 'Spring Boot 4'. Good coverage of domain-specific terms developers would naturally use. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive with clear niche: Spring Data JPA specifically for Java 25/Spring Boot 4. Explicit boundary statements ('Do not use for generic SQL help or project-wide migration work') actively prevent conflicts with related skills. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
85%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a well-structured skill with excellent workflow clarity and progressive disclosure. The decision tables and validation checkpoints are particularly strong. The main weakness is the lack of inline executable code examples - the skill relies heavily on external asset files rather than providing concrete, copy-paste ready code directly in the skill body.
Suggestions
Add at least one inline executable code example for the most common pattern (e.g., a simple repository with @Query annotation) rather than only referencing external asset files
Include a minimal concrete example showing the difference between aggregate-root and internal entity repository decisions
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is lean and efficient, avoiding explanations of concepts Claude already knows (like what JPA is or how Spring works). Every section serves a purpose with no padding or unnecessary context. | 3 / 3 |
Actionability | The skill provides clear decision tables and workflow steps, but lacks executable code examples directly in the skill body. It references external templates and assets rather than providing copy-paste ready code inline. | 2 / 3 |
Workflow Clarity | The 6-step workflow is clearly sequenced with explicit validation checkpoints in Steps 5 and 6. The decision tables provide clear branching logic, and the validation steps cover relationships, transactions, and performance concerns. | 3 / 3 |
Progressive Disclosure | Excellent structure with a clear overview, decision tables for pattern selection, and well-signaled one-level-deep references to specific reference docs and asset templates. Content is appropriately split between the main skill and supporting files. | 3 / 3 |
Total | 11 / 12 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 — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
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