Content
85%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 skill body is a lean, dense operational guide with an explicit observe-act-verify workflow, strong error-recovery feedback loops, and clean separation of procedural guidance from the API reference. It is highly actionable, naming concrete methods and options throughout. The only weaknesses are minor: some safety and ref-invalidation guidance is restated across sections, and a few tools are only identified in the reference file rather than the body.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is dense, imperative, and assumes Claude's competence ("Observations emit directly; do not print them again"), with zero padding or explanation of known concepts. It falls just short of anchor 5 because guidance is repeated across sections — ref invalidation after navigation appears in "Navigation can replace the document and invalidate old refs", "After navigation, take a new snapshot before reusing any target", and the image-coordinate note — and the "untrusted data" principle is restated in both Observe and Trust sections; these could be trimmed. | 4 / 5 |
Actionability | Concrete, executable guidance throughout: "bind `var tab = await browser.getTab()`", "`tab.getAXState()`", "`tab.getScreenshot({ref})`", "passing `nextCursor` back as `cursor` with `fullPage: true`". This matches anchor 4's "concrete code or commands with minor gaps": most method calls are copy-paste ready, but a few steps defer to the reference without naming the tool in the body (e.g., "Use explicit dialog tools when available" never names `tab.handleDialog`), keeping it short of fully copy-paste-ready anchor 5. | 4 / 5 |
Workflow Clarity | The "Observe, act, verify" section gives a clear numbered 5-step sequence with explicit validation ("Verify the outcome, URL and page identity before reporting success") and error-recovery feedback loops for `stale_ref`, `stale_web_tool`, timeouts ("inspect whether its effect already happened"), and context loss ("call `browser.documentation()`"). This matches anchor 5's explicit validation steps plus feedback loops; anchor 4's "minor validation gaps" does not apply. | 5 / 5 |
Progressive Disclosure | The body is a well-organized operational overview (Observe/act/verify, Screenshots, Login, Trust) with the exact API surface split into a single clearly signaled, one-level-deep reference: "Exact methods, inputs, outputs and platform limits are defined in [API reference](references/api.md)", and references/api.md exists with exactly that content. This matches anchor 5's "clear overview with well-signaled one-level-deep references; content appropriately split". | 5 / 5 |
Total | 18 / 20 Passed |