Content
75%Weight 40%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
A well-structured, self-contained instruction skill: every phase is concrete and executable, the checklist encodes real engine-divergence expertise, and the severity table defines a crisp output. It falls short of top marks only on feedback loops for capture failures, the unspecified MCP invocation, and minor trimmable asides.
Suggestions
Add an explicit recovery step in Phase 1 (e.g., what to do when a page fails to load or an engine crashes mid-capture — retry, skip, or flag as a finding) to close the workflow's feedback-loop gap.
Give one concrete Playwright MCP invocation example (tool name plus the per-engine browser_type values) so the primary capture route is as copy-paste-ready as the npx playwright test command.
Tighten the Phase 0/Phase 1 asides (the 'most projects only run Chromium by default' parenthetical and the overlap rationale already covered by the description's NOT clauses) to reclaim tokens.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is lean and assumes Claude's competence (citing 'Firefox's flexbox min-content defaults' as a divergence point without explaining flexbox), but a few asides and the partial redundancy between the description's NOT clauses and the 'When not to use' section could be trimmed. Not 5 because minor asides and duplicated boundary content keep it from 'every token earns its place'; not 3 because there is no explanation of concepts Claude already knows and no padding. | 4 / 5 |
Actionability | Concrete, executable guidance dominates: the exact command 'npx playwright test --project=chromium --project=firefox --project=webkit', a fixed 992x900 viewport, a capture naming convention ('<page-slug>-<engine>.png'), and a caniuse check with named risky features (':has()', 'subgrid', 'backdrop-filter'). Not 5 because the primary capture route (Playwright MCP, 'switching browser_type per engine') remains a high-level hint rather than a fully specified invocation; not 3 because the command path, naming, and checklist specifics are executable. | 4 / 5 |
Workflow Clarity | The four phases (Scope, Capture, Checklist, Findings) are clearly sequenced with the per-page checklist acting as a checkpoint and severity-ranked findings defining the output shape, and the read-only nature means the destructive/batch cap does not apply. Not 5 because there is no explicit feedback loop (e.g., re-capture if a page fails to load, or what to do after spotting an engine-unique console error); not 3 because the sequence is complete and unambiguous. | 4 / 5 |
Progressive Disclosure | The body is well-sectioned with a clear overview, dedicated boundary section, and phased structure with nothing buried, and no bundle files exist so all content lives inline. Not 5 because at roughly 90 lines with the full checklist and severity table inline it exceeds the under-50-line simple-skill carve-out that would allow a reference-less 5; not 3 because organization is clean, navigation is easy, and nothing is inlined that clearly belongs elsewhere at this size. | 4 / 5 |
Total | 16 / 20 Passed |