nestjs-expert
Creates and configures NestJS modules, controllers, services, DTOs, guards, and interceptors for enterprise-grade TypeScript backend applications. Use when building NestJS REST APIs or GraphQL services, implementing dependency injection, scaffolding modular architecture, adding JWT/Passport authentication, integrating TypeORM or Prisma, or working with .module.ts, .controller.ts, and .service.ts files. Invoke for guards, interceptors, pipes, validation, Swagger documentation, and unit/E2E testing in NestJS projects.
92
92%
Does it follow best practices?
Impact
91%
1.01xAverage score across 6 eval scenarios
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 comprehensively covers the NestJS framework domain. It provides specific actions, extensive trigger terms that users would naturally use, explicit 'Use when' and 'Invoke for' guidance, and is highly distinctive to the NestJS ecosystem. The description uses proper third-person voice throughout.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'Creates and configures NestJS modules, controllers, services, DTOs, guards, and interceptors' with additional specifics like 'JWT/Passport authentication', 'TypeORM or Prisma', 'Swagger documentation', and 'unit/E2E testing'. | 3 / 3 |
Completeness | Clearly answers both what ('Creates and configures NestJS modules...') and when ('Use when building NestJS REST APIs...', 'Invoke for guards, interceptors...'). Contains explicit trigger guidance with 'Use when' and 'Invoke for' clauses. | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural terms users would say: 'NestJS', 'REST APIs', 'GraphQL', 'dependency injection', 'JWT', 'Passport', 'TypeORM', 'Prisma', '.module.ts', '.controller.ts', '.service.ts', 'guards', 'interceptors', 'pipes', 'validation', 'Swagger'. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive with NestJS-specific terminology and file extensions (.module.ts, .controller.ts, .service.ts). Clear niche targeting NestJS framework specifically, unlikely to conflict with generic TypeScript or other backend framework 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 strong, well-structured NestJS skill with excellent actionability through complete, executable code examples and clear workflow guidance. The progressive disclosure is well-implemented with a reference table for deeper topics. Minor improvements could be made by removing the introductory tagline and the redundant Knowledge Reference section to improve token efficiency.
Suggestions
Remove the introductory tagline ('Senior NestJS specialist...') as it adds no actionable value
Remove or relocate the 'Knowledge Reference' section at the end - Claude already knows these technologies and the list doesn't provide actionable guidance
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is reasonably efficient but includes some unnecessary elements like the introductory tagline ('Senior NestJS specialist...') and the Knowledge Reference section at the end which lists concepts Claude already knows. The code examples are appropriately detailed without excessive explanation. | 2 / 3 |
Actionability | Excellent actionability with fully executable, copy-paste ready code examples covering controllers, services, modules, DTOs, and unit tests. All examples include proper imports, decorators, and error handling patterns that can be directly used. | 3 / 3 |
Workflow Clarity | Clear 6-step workflow with explicit verification steps (lint, test, nest info). The workflow progresses logically from analysis through implementation to testing, with validation checkpoints built in. Output Templates section provides clear sequencing for deliverables. | 3 / 3 |
Progressive Disclosure | Well-structured with a reference table pointing to 6 separate topic-specific files with clear 'Load When' guidance. The main skill provides a complete overview with actionable examples while deferring detailed guidance to one-level-deep references. | 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.
- Repository
- jeffallan/claude-skills
- Commit
5b76101
- Reviewed
Table of Contents
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