Conciseness

Roughly a quarter of the body is redundant restatement: 'When to use this skill' duplicates the Activation Contract's use/do-not-use lists, 'Core workflow' repeats 'How to use this skill' (browser validation and CloudBase-as-branch appear in both), the agent-browser mandate is stated three times, and the History-mode 404/NoSuchKey explanation is given in full twice. This matches anchor 2's 'several unnecessary explanations or padded sections' rather than 3's occasional tightening, though it avoids anchor 1 because there are no basic-concept explanations and every line is directive.

Actionability

Concrete and executable throughout: exact commands ('tsc --noEmit', 'npm install @cloudbase/js-sdk'), copy-paste MCP calls (manageHosting({ action: "setWebsiteDocument", indexDocument: "index.html", errorDocument: "index.html" }) with a queryHosting verify step), a runnable SDK init snippet, and specific file patterns to inspect ('src/lib/backend.*', 'src/lib/auth.*'). It falls short of 5 because the central browser-validation workflow is deferred to 'browser-testing.md', which is absent from the bundle, leaving the most important concrete workflow unavailable.

Workflow Clarity

Validation checkpoints are explicit and layered — static checks (tsc/eslint/build/tests) plus a browser layer with 'Only after both layers pass may you say the task is done', a rule to disclose exactly which step is unverified, and a deploy-then-verify loop, so the destructive-operation cap does not apply. Not 5 because the body is organized by constitution/topic rather than one sequenced end-to-end process, and the detailed browser validation loop lives in the missing 'browser-testing.md'.

Progressive Disclosure

In-body structure is good with plainly signposted one-level-deep pointers ('General React / Vue / Vite guidance -> frameworks.md', 'Browser flow checks or page validation -> browser-testing.md'), but neither referenced file exists in the bundle (no references/ directory at all), so the two primary go-deeper paths are dead links; the ~50-line CloudBase operations section is also inlined. This sits at anchor 3 rather than 4 because navigation breaks exactly where the skill directs the agent to read more, and above 2 because the SKILL.md itself is well-sectioned with prominent, non-buried references.

Specificity

It lists six concrete actions ('implement, integrate, debug, build, deploy, or validate') on a defined domain ('Web frontend'), but they are broad engineering-lifecycle verbs rather than the fine-grained distinct operations of the 5 anchor, placing this at 'several specific actions; minor gaps'. Not 3 because it names far more than 1-2 actions.

Completeness

The 'when' is explicit and trigger-rich ('Use when users need to... especially for React, Vue, Vite...'), and the 'what' is conveyed by the same action verbs, but capability and trigger are merged into a single clause with no standalone what-statement. This fits anchor 4's 'both present; one could be more explicit' rather than 5, and is clearly above 3 because the when is emphatically explicit, not weakly implied.

Trigger Term Quality

Good natural keyword coverage — 'React, Vue, Vite, browser flows, CloudBase Web integration' plus verbs users actually say like deploy and debug — well above anchor 3's single domain noun. It misses common synonyms and variants ('web app', 'SPA', 'front end', 'component'), so it does not reach the 5 anchor's comprehensive coverage including synonyms.

Distinctiveness Conflict Risk

A scoped niche ('Web frontend... after the product direction is already clear') with distinctive triggers (React/Vue/Vite/CloudBase) separates it from visual-design and backend skills. Not 5 because the boundary with UI-design skills rests on the subtle 'direction already clear' qualifier and 'Web frontend' still overlaps generic frontend skills; not 3 because the triggers are far more distinctive than anchor 3's example.