Conciseness

The body is dense and imperative throughout — no time is spent explaining concepts Claude already knows (no "what HTML is", no library tutorials), and every section carries operational instructions. Not a 5 because a few rhetorical justifications could be trimmed, e.g., "the removals are the load-bearing rows — a behavior nobody can account for is a regression that was never filed, and the author is the last person able to notice it" and "Expect the count of intentional removals to be wrong on the first pass"; the point survives in half the tokens. Comfortably above the 3 anchor, which requires unnecessary explanation.

Actionability

Fully executable guidance: copy-paste-ready bash for building the board (with SKILL_ROOT resolution and placeholders clearly marked), serving it with BOARD_URL extraction guarded by `test -n "$BOARD_URL"`, and the reload API curl with its expected `{"reloaded":true}` response; artifact formats (decision contract fields, board.json via references/board-contract.md, approved.json contents) are enumerated field-by-field, and fallbacks are specified when a command path fails. This matches the 5 anchor (copy-paste ready commands covering the common cases) rather than 4, which allows minor gaps.

Workflow Clarity

Six clearly sequenced steps with explicit validation checkpoints and feedback loops: the builder's rejection conditions ("byte-identical candidates, path traversal, missing declared states") with the instruction to fix the candidate rather than weaken the boundary, expected `BOARD_BUILT variants=...` output, the BOARD_URL guard, the reload-vs-reserve distinction with expected response, an explicit stop condition ("Stop adding rounds when feedback no longer changes the decision"), an approval gate ("Then—and only then—implement"), and a disposition-recheck loop for the behavior inventory. Matches the 5 anchor (explicit validation, error-recovery loops, checklists).

Progressive Disclosure

The SKILL.md body is an appropriate overview that offloads detail to one-level-deep, clearly signaled resources: "Read `references/interaction-design-method.md` before proposing the candidate architectures" and "Create `board.json` using `references/board-contract.md`", plus the `scripts/build_board.py` invocation. All referenced paths exist in the bundle, the reference files contain no further nested references, and the `assets/design-board-template.html` file is consumed by the script rather than orphaned. Clean match for the 5 anchor.

Specificity

Concrete actions are named in third person — "Generates several distinct, clickable HTML interaction prototypes for one product surface into a Design Board and collects selection/remix feedback before implementation" — which lists several specific capabilities (generate prototypes, board them, collect feedback, gate implementation). Not a 5 because the action list stops at the entry-point actions and does not cover the full capability set (e.g., iterating on remix feedback, approval capture).

Completeness

Explicitly answers both questions: what ("Generates several distinct, clickable HTML interaction prototypes... and collects selection/remix feedback before implementation") and when ("Use for multiple UI versions, interaction alternatives, progressive-disclosure options, or when styling is fine but hierarchy/workflow/interaction feels off"), with concrete trigger phrases and additional negative boundaries ("Not for static visual-style calibration... or a settled CSS tweak"). Clearly matches the top anchor rather than the 4 anchor, whose 'when' is less explicit.

Trigger Term Quality

Natural user phrasings are present: "multiple UI versions", "interaction alternatives", "progressive-disclosure options", "when styling is fine but hierarchy/workflow/interaction feels off" — language a user would plausibly say. Not a 5 because common synonyms such as "prototype", "mockup", "wireframe", "flow", or "UX" are absent; not a 3 because the included terms are varied and clearly map to the trigger scenario rather than one generic keyword.

Distinctiveness Conflict Risk

The description carves a clear niche (runnable interaction prototypes for one product surface) and actively disambiguates from neighbors: "Not for static visual-style calibration (use design-style-picker) or a settled CSS tweak". Triggers are interaction-specific terms, minimizing conflict with visual-styling or implementation skills — a clean match for the 5 anchor.