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.
The body is a tight, well-structured four-phase workflow with explicit thresholds, a safety section for mutating journeys, and honest INCONCLUSIVE handling for missing baselines. It falls short of top marks mainly on actionability — steps are named but not wired to concrete MCP commands — and on the absence of an explicit error-recovery loop.
Suggestions
Add concrete invocations for the ambiguous steps: which browser-MCP tool or snippet captures Core Web Vitals and runs axe-core, rather than 'Check Core Web Vitals' / 'Run axe-core' as bare checklist items.
Add a short fix-and-retry loop after Phase 2/3 failures (e.g., on a failed form or visual check, how to re-verify before recording the verdict) to upgrade workflow validation from checkpoints to a full feedback loop.
Move the time-sensitive metric note ('INP replaced FID in March 2024') into a brief deprecations/old-metrics line so the main thresholds stay evergreen, and consider relocating the QA report template to a references/ file to slim the main body.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is lean — phase checklists, a safety note, and an output template with no padding or explanations of concepts Claude already knows — but the inline time-sensitive aside 'INP replaced FID in March 2024; thresholds per web.dev' (not in a deprecated/old-patterns section) and the illustrative numbers in the output template cost a few tokens. | 4 / 5 |
Actionability | Concrete specifics abound (LCP < 2.5s, CLS < 0.1, INP < 200ms; breakpoints 375px/768px/1440px; named tools and MCP prefixes; a full output-format template), but steps like 'Check Core Web Vitals' and 'Run axe-core' stop at the checklist level without the concrete commands or tool invocations to execute them. | 4 / 5 |
Workflow Clarity | The four-phase sequence is clear and includes real checkpoints ('no baseline ⇒ report INCONCLUSIVE, never a silent PASS', explicit verdict gating, and blast-radius rules for mutating journeys), but there is no explicit fix-and-retry feedback loop after a failed check. | 4 / 5 |
Progressive Disclosure | As a single-file bundle with no references/, scripts/, or assets/ directories, the ~100-line body is well-sectioned with everything appropriately inline; it sits just over the 50-line simple-skill threshold, and the output-format template is borderline content that could move to a reference file. | 4 / 5 |
Total | 16 / 20 Passed |