Content
86%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, executable skill body with clear workflows, validation on the destructive update flow, and clean progressive disclosure to a verified reference file. The options table and a few prose asides could be tightened slightly for token efficiency.
Suggestions
Tighten the toHaveScreenshot options table by dropping self-evident defaults (e.g. the default values already shown in prose) to reduce token cost.
Trim restating prose like 'This is the self-hosted option - no external service...' and 'if: always() is critical' since the code and section headers already convey it.
Consider moving the full GitHub Actions workflow block into the reference file, keeping only a minimal CI-stub inline in SKILL.md.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Lean body that largely assumes Claude's competence, but the full toHaveScreenshot options table and some explanatory prose ('This is the self-hosted option', 'if: always() is critical') add a little padding that could be trimmed. | 4 / 5 |
Actionability | Copy-paste-ready executable TypeScript and shell snippets cover the common cases (page/locator assertions, mask, maxDiffPixels, clip, config, update flow, CI workflow), matching the fully-executable anchor. | 5 / 5 |
Workflow Clarity | The destructive --update-snapshots flow is clearly sequenced with an explicit validation checkpoint ('Always review the diff of the baselines in your PR'), and the CI-matching section gives a two-option decision path; minor checkpoint gaps keep it just below a 5. | 4 / 5 |
Progressive Disclosure | Clear overview in SKILL.md with a single, well-signaled one-level-deep reference to references/responsive-breakpoints.md (a real file), with the bulk of the viewport-matrix detail correctly split out. | 5 / 5 |
Total | 18 / 20 Passed |