Scaffold a Next.js 15 App Router project with TypeScript, server/client component conventions, route groups, layouts, loading/error boundaries, Route Handlers, middleware, and SSR/SSG/ISR strategies.
85
80%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./frontend/nextjs-project-starter/SKILL.mdQuality
Discovery
67%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 excels at specificity and distinctiveness with comprehensive Next.js 15 App Router features clearly listed. However, it lacks explicit trigger guidance ('Use when...') which is critical for skill selection, and could benefit from more natural user-facing keywords beyond technical jargon.
Suggestions
Add a 'Use when...' clause with trigger phrases like 'create a Next.js app', 'scaffold nextjs project', 'new Next 15 application', or 'setup App Router'
Include common user variations: 'nextjs', 'next.js', 'create next app', 'new next project', 'react framework'
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: scaffold project, TypeScript setup, server/client component conventions, route groups, layouts, loading/error boundaries, Route Handlers, middleware, and SSR/SSG/ISR strategies. | 3 / 3 |
Completeness | Clearly answers 'what does this do' with comprehensive feature list, but lacks an explicit 'Use when...' clause or trigger guidance for when Claude should select this skill. | 2 / 3 |
Trigger Term Quality | Includes good technical terms like 'Next.js 15', 'App Router', 'TypeScript', 'SSR/SSG/ISR' that developers would use, but missing common variations like 'create next app', 'new next project', 'nextjs setup', or file extensions. | 2 / 3 |
Distinctiveness Conflict Risk | Highly specific to Next.js 15 App Router with distinct technical features; unlikely to conflict with generic React, other framework scaffolding, or older Next.js Pages Router skills. | 3 / 3 |
Total | 10 / 12 Passed |
Implementation
92%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a high-quality, comprehensive Next.js 15 starter skill with excellent actionability and conciseness. The code examples are complete, executable, and cover all major patterns mentioned in the description. The main weakness is that the content is quite dense and could benefit from better progressive disclosure by splitting advanced patterns into separate files.
Suggestions
Consider splitting advanced patterns (SSR/SSG/ISR strategies, middleware, server actions) into separate reference files like PATTERNS.md or DATA-FETCHING.md to improve progressive disclosure
Add links to the mentioned integration skills (Prisma, NextAuth.js, etc.) if they exist in the skill system
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is lean and efficient, providing only necessary information without explaining concepts Claude already knows. Every section serves a purpose with no padding or unnecessary context about what Next.js is or how React works. | 3 / 3 |
Actionability | Fully executable code examples throughout - from scaffold command to complete component implementations, route handlers, middleware, and data fetching patterns. All code is copy-paste ready with proper TypeScript types. | 3 / 3 |
Workflow Clarity | Clear sequence in 'First Steps After Scaffold' section with explicit verification step (checking localhost:3000 and running tsc). The scaffold command includes specific CLI prompts to select, and common commands are clearly listed. | 3 / 3 |
Progressive Disclosure | Content is well-organized with clear sections, but the skill is quite long (~400 lines) and could benefit from splitting detailed patterns (SSR/SSG/ISR, middleware, server actions) into separate reference files. Integration Notes section hints at external skills but doesn't link to them. | 2 / 3 |
Total | 11 / 12 Passed |
Validation
90%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 | |
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