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-crafted, highly actionable skill body: executable code at every step, genuinely non-obvious operational guidance (platform-specific baselines, CI matching), and clean use of a one-level-deep reference file. The remaining gains are trimming a few sentences that restate Playwright basics and making the first-run-to-CI sequence an explicit numbered workflow with a diff-failure feedback loop.
Suggestions
Cut sentences that restate known Playwright behavior (e.g. 'The first run generates the baseline PNG; subsequent runs compare against it') to tighten conciseness toward the lean anchor.
Add a short numbered adoption sequence (add assertion → commit baseline from matching platform → verify CI green) with an explicit 'if a snapshot fails unexpectedly, inspect the report diff before updating baselines' feedback loop to lift workflow clarity.
Consider moving the full toHaveScreenshot options table into a reference file (like the viewport pattern) so SKILL.md carries only the most-used options inline.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is dense with non-obvious operational knowledge (platform-suffix load-bearingness, CI baseline-matching strategies, the options table) and mostly assumes Playwright competence. Not 5: a few sentences restate basics Claude already knows, e.g. "The first run generates the baseline PNG; subsequent runs compare against it". | 4 / 5 |
Actionability | Fully executable throughout: copy-paste-ready page- and locator-level spec examples, a complete playwright.config.ts, concrete --update-snapshots commands, and a whole CI workflow YAML, with the common cases (mask, maxDiffPixels, clip) each shown as code. Not 4: there are no gaps in executable guidance for the common cases. | 5 / 5 |
Workflow Clarity | Sections progress logically (authoring → snapshot layout → config → run/update → CI matching → CI integration) and include a real validation checkpoint ("Always review the diff of the baselines in your PR") plus failure remediation for platform mismatch. Not 5: there is no explicit ordered step sequence or a failure→fix→rerun feedback loop for an unexpected snapshot diff; not 3: checkpoints are present and explicit, not implicit. | 4 / 5 |
Progressive Disclosure | The SKILL.md is a clear overview and the advanced viewport-matrix pattern is correctly split into references/responsive-breakpoints.md (a real bundle file), which is linked in both the config section and References with an accurate description of its contents and nests no further. Not 4: the single reference is well signaled and all content is appropriately placed, meeting the 'clear overview with well-signaled one-level-deep references' anchor. | 5 / 5 |
Total | 18 / 20 Passed |