Content
81%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-built, actionable instruction-only skill: precise measurement rules, explicit validation and cleanup checkpoints, and useful non-obvious interpretation heuristics. The main weaknesses are minor duplication of the frontmatter description in the body and code fragments (decorator payload, no readiness-probe command) that stop just short of fully executable examples.
Suggestions
Remove or drastically shorten the 'Purpose' and 'Example Triggers' sections, which restate the frontmatter description, and fold any unique phrasing into the description itself.
Replace the TS payload fragment with a complete, copy-paste-ready preview decorator example (including the mount hook and the one-requestAnimationFrame wait), so the render-signal step is fully executable.
Add a concrete server-readiness probe (e.g., a one-line fetch/HTTP check with the exact URL and expected status) to make harness step 4 unambiguous.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is dense and prescriptive with no padding or explanations of known concepts, but the "Purpose" section and the closing "Example Triggers" section largely restate the frontmatter description, which is duplication that could be trimmed. | 4 / 5 |
Actionability | Concrete throughout — exact timing boundaries, exact flags ("--no-open"/"--open"), exact signal names (`window.__sbStartupBenchmark`, `requestAnimationFrame()`), an 8-step harness spec, and a JSON output schema — but the TS snippet is a payload fragment rather than complete decorator code, and no concrete server-readiness probe is given. | 4 / 5 |
Workflow Clarity | The 8-step harness sequence includes explicit validation checkpoints ("Fail fast if the target Storybook port is already in use", "Kill the full spawned process group during cleanup") plus error-recovery guidance ("If a repeated benchmark reports unrealistically low `server.average`, first check for a stale Storybook server on the same port") and a warm-vs-cold-run pitfall. | 5 / 5 |
Progressive Disclosure | No bundle files exist and the single-file body is well organized with clear section headers and easy navigation; however, it is a flat single file over 50 lines with no reference layering, and sections like Example Triggers and the full summary JSON block sit at the same level as core guidance. | 4 / 5 |
Total | 17 / 20 Passed |