Content
77%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 instruction-only skill body: strongly actionable, clearly sequenced with real validation checkpoints, and exemplary progressive disclosure over a verified bundle. The one real weakness is conciseness — Chrome version gating is pinned inline throughout Steps 3–5 and Error Handling instead of being consolidated in references/compatibility.md or a dedicated version section.
Suggestions
Consolidate the inline Chrome version pins (146–149, 151+, 153+, 154.0.8017.0+, 156.0.8067.0+, the 148 transition window) into references/compatibility.md or a single 'Version gating' section, keeping only the behavior difference in the step text.
Add a minimal complete registerTool() code block (name, description, inputSchema, execute with { signal }) to Step 3, or point to the template asset at the top of that step, so the imperative path is copy-paste ready without a reference hop.
Trim redundant restatements between Step 3 items 2–4 and the Error Handling bullets (e.g. the document/navigator fallback and the try/catch pattern are each explained twice).
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is imperative and free of explanations Claude already knows, but it carries roughly eight scattered time-sensitive version pins ("Chrome 146–149", "Chrome 151+", "Chrome 154.0.8017.0+", "Chrome 156.0.8067.0+", "Chrome 153+", "Chrome 148 transition window") that the rubric flags as a conciseness penalty and that largely duplicate the stated purpose of references/compatibility.md. Not 2 because there is no padding or concept-teaching; not 4 because the version-gated detail is not confined to an old-patterns/deprecated section and would need real trimming to fit the higher anchor. | 3 / 5 |
Actionability | Concrete throughout: an executable command ("node scripts/find-webmcp-targets.mjs ."), a copy-paste feature-detection pattern ("const modelContext = document.modelContext || navigator.modelContext;"), exact annotation flags (readOnlyHint, consequentialHint, debugging, untrustedContentHint), declarative attributes (toolname, tooldescription, toolautosubmit), and named error classes with fixes. Not 5 because no complete executable registerTool() example appears in the body — the full code lives one hop away in assets/model-context-registry.template.ts, leaving a minor gap against the copy-paste-ready anchor. | 4 / 5 |
Workflow Clarity | Five clearly sequenced steps (identify surface → choose shape → implement → wire UX → validate) with an explicit Step 5 validation checklist (lifecycle, invalid inputs, cancellation, deterministic-then-NL routing, "Run the workspace build, typecheck, or tests") and a dedicated Error Handling section with named exceptions and recovery actions — a full feedback loop. Meets the anchor-5 example's structure of validate/fix/retry. | 5 / 5 |
Progressive Disclosure | The ~78-line body is an overview that delegates depth via conditionally signaled, one-level-deep references that all exist in the bundle ("Read references/webmcp-reference.md before writing code", "Read references/declarative-api.md when ...", compatibility.md, troubleshooting.md, the registry template asset, and the discovery script). References are one level deep with clear when-to-read triggers and no nesting, matching the anchor-5 example. | 5 / 5 |
Total | 17 / 20 Passed |