Content
80%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A concise, actionable single-file skill with executable web-vitals and Lighthouse code and a useful audit checklist. Its main gaps are the absence of explicit validation/feedback checkpoints in the audit workflow and no progressive disclosure into separate reference files.
Suggestions
Add an explicit validation/re-measure checkpoint to the audit workflow (e.g., 'After applying optimizations, re-run Core Web Vitals and confirm the metric moved into the Good range before declaring the issue resolved').
Split the Lighthouse automation and performance-budget material into a referenced file (e.g., REFERENCE.md) and keep SKILL.md as a lean overview with clearly signaled one-level-deep links.
Tie the generic optimization bullets ('Implement code splitting', 'Add service worker caching') to concrete commands or short code snippets so they instruct rather than describe.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Lean and assumption-respecting: it gives Core Web Vitals thresholds, executable code, and a checklist without explaining what a Core Web Vital is or how the libraries work. Not a level-2 because there is no padded concept explanation to tighten. | 3 / 3 |
Actionability | Provides copy-paste-ready executable code for web-vitals collection and Lighthouse automation, plus a concrete performance-budget JSON and an audit checklist. Not a level-2 because the examples are complete and runnable rather than pseudocode. | 3 / 3 |
Workflow Clarity | The Audit Checklist sequences the audit (measure baseline, run Lighthouse, analyze RUM, set budget, configure monitoring) but has no explicit validation checkpoints or fix-then-retry feedback loops. Not a level-3 because validation/feedback steps are absent; not a level-1 because a real ordered sequence exists. | 2 / 3 |
Progressive Disclosure | Well-organized into clear sections, but everything is inline in a single ~90-line file with no external references or signaled deeper-dive files. Not a level-3 because it exceeds the simple-skill (<50 line) exemption and offers no one-level-deep references; not a level-1 because it is structured, not a monolithic wall of text. | 2 / 3 |
Total | 10 / 12 Passed |