lazy-loading-implementer
Lazy Loading Implementer - Auto-activating skill for Frontend Development. Triggers on: lazy loading implementer, lazy loading implementer Part of the Frontend Development skill category.
36
3%
Does it follow best practices?
Impact
96%
1.02xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./planned-skills/generated/05-frontend-dev/lazy-loading-implementer/SKILL.mdQuality
Discovery
7%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 is essentially a template placeholder with no substantive content. It names the skill category but provides zero information about what concrete actions it performs, what technologies or patterns it covers, or when Claude should select it. It would be nearly useless for skill selection among multiple frontend-related skills.
Suggestions
Add specific concrete actions such as 'Implements lazy loading for images, videos, and components using Intersection Observer API, native loading attribute, and dynamic imports for code splitting.'
Add an explicit 'Use when...' clause like 'Use when the user asks about lazy loading, deferred loading, code splitting, below-the-fold content, or improving page load performance.'
Include natural trigger terms users would say: 'lazy load', 'defer images', 'code splitting', 'dynamic import', 'Intersection Observer', 'page load performance', 'loading="lazy"'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | The description only names the skill ('Lazy Loading Implementer') without describing any concrete actions. There are no specific capabilities listed such as 'implements image lazy loading', 'configures Intersection Observer', or 'adds code-splitting with dynamic imports'. | 1 / 3 |
Completeness | The description fails to answer both 'what does this do' and 'when should Claude use it'. There is no explanation of capabilities and no explicit 'Use when...' clause with trigger guidance. | 1 / 3 |
Trigger Term Quality | The only trigger terms are 'lazy loading implementer' repeated twice. It misses natural user phrases like 'lazy load images', 'defer loading', 'code splitting', 'Intersection Observer', 'performance optimization', 'below the fold', or 'dynamic imports'. | 1 / 3 |
Distinctiveness Conflict Risk | The term 'lazy loading' is somewhat specific to a niche area of frontend development, which provides some distinctiveness. However, the vague 'Frontend Development' category and lack of concrete scope means it could overlap with general frontend performance or optimization skills. | 2 / 3 |
Total | 5 / 12 Passed |
Implementation
0%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is an empty shell with no substantive content. It consists entirely of boilerplate meta-descriptions about what the skill supposedly does, without any actual lazy loading implementation guidance, code examples, or technical instructions. It provides zero value beyond what Claude already knows.
Suggestions
Replace the meta-description sections with actual lazy loading implementation code examples (e.g., React.lazy(), Intersection Observer API, dynamic imports, image lazy loading with loading='lazy' attribute).
Add a concrete workflow for implementing lazy loading: identify candidates → choose strategy → implement → validate performance improvement with specific tools like Lighthouse.
Include framework-specific executable code snippets for React (React.lazy + Suspense), Vue (defineAsyncComponent), and native browser APIs (Intersection Observer).
Remove all 'When to Use' and 'Example Triggers' sections—these are meta-information about skill activation that waste tokens and provide no actionable guidance.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is entirely filler and meta-description. It explains what the skill does in abstract terms without providing any actual technical content. Every section describes rather than instructs, wasting tokens on information Claude doesn't need. | 1 / 3 |
Actionability | There is zero concrete guidance—no code examples, no commands, no specific implementation patterns for lazy loading. The content is entirely vague descriptions like 'Provides step-by-step guidance' without actually providing any such guidance. | 1 / 3 |
Workflow Clarity | No workflow is defined at all. There are no steps, no sequence, no validation checkpoints. The skill claims to provide 'step-by-step guidance' but contains none. | 1 / 3 |
Progressive Disclosure | The content is a monolithic block of meta-descriptions with no meaningful structure. There are no references to detailed files, no quick-start section, and no actual content to organize. | 1 / 3 |
Total | 4 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
- Commit
3e83543
- Reviewed
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