Conciseness

The body is information-dense with no padding over concepts Claude already knows (tables, tight code, library-specific gotchas like "Field discards color"), and every token is about bestax-specific behavior. Not level 5: the ~40-line label/aria wiring passage and the PinInput deep-dive are tangled, over-compressed prose that could be trimmed or restructured; not level 3 because the verbosity is confined to a couple of passages rather than scattered unnecessary explanation.

Actionability

Copy-paste-ready, complete code throughout: convenience vs composed Field/Control examples, addons, Fieldset, a full executable validation form, and exact Toast/Dialog calls ("toast.success('Demo booked')", "await dialog.confirm({…})"). Decision guidance (Autocomplete vs Combobox, PinInput vs hand-rolled inputs) and concrete commands ("pnpm storybook") cover the common cases.

Workflow Clarity

Sections sequence the form lifecycle (compose → validate state → submit feedback via Toast/Dialog → visual inspection) and the inspection step has explicit validation with a fallback loop (renderToString + grep classes, "say plainly that the visual pass is still owed"), plus a final checklist. Not level 5: the build path is conveyed through section order and prose rather than an explicit ordered sequence of steps with checkpoints.

Progressive Disclosure

Good structure: overview + inventory + common props in SKILL.md, with clearly signaled one-level-deep references ("See references/api.md for per-component props and references/patterns.md for a full multi-field form") — both files exist and contain exactly that, with no nested references. Not level 5: the extended label/aria-wiring passage and the PinInput deep-dive read like patterns.md material inlined in the main file rather than appropriately split out.

Specificity

"Build forms with @allxsmith/bestax-bulma — Field/Control/Label/Help composition, inputs, selects, checkboxes, radios, switches, and advanced controls (Autocomplete, Combobox, Slider, Numberinput, PinInput, Rate, Taginput, File, date/time)" names the domain plus a comprehensive, concrete inventory of actions and components, including the "validate-it-yourself error pattern". Not level 4: coverage is exhaustive of the form surface, not merely several actions with minor gaps.

Completeness

Explicitly answers both: what ("Build forms with @allxsmith/bestax-bulma — …composition… advanced controls… validate-it-yourself error pattern") and when ("Use when building a form, wiring inputs to state, or showing validation/error state") with concrete trigger phrases. Matches the anchor-5 example pattern exactly; level 4 would require a vaguer 'when'.

Trigger Term Quality

"Use when building a form, wiring inputs to state, or showing validation/error state" plus "inputs, selects, checkboxes, radios, switches" are natural phrases users would say. Not level 5: a few common synonyms/variations (e.g. "form fields", "controlled inputs", "error messages") are absent, though the package name itself is a strong trigger.

Distinctiveness Conflict Risk

The niche is pinned to a named package (@allxsmith/bestax-bulma form components) with distinct triggers (form composition, wiring inputs to state, validation/error state); it also disambiguates by stating "There is no form/validation library", minimizing overlap with formik/react-hook-form skills. Minimal conflict risk.