Conciseness

The ~500-line body is dense and operational rather than padded with known concepts, but reference-grade detail is inlined (History's merge semantics, Sharing's guest-link role inheritance) and notes repeat (NETWORK_BLOCKED appears in the `open` row and again below; "Not here" overlaps "Reading the references locally"). Not 2 because nearly every sentence is skill-specific; not 4 because the file could be roughly half its size with the same clarity.

Actionability

Fully executable throughout: an exact command table (`node $A write-db <root> <batch.json | ->`), a copy-paste batch JSON example, a complete pre-commit hook script, concrete API contracts (`dash.data(id)` → `{status, data, message, refreshing, meta}`), and a ready date-parsing one-liner (`d3.utcParse('%a, %b %d, %Y')(day)`). Not 4 because commands and examples are complete and cover the common cases.

Workflow Clarity

The numbered creation flow has explicit validation loops with retry caps: "run `check <root>`… fix what it lists and run it again until `problems` is 0", "run it again, 5 times at most", "2 fixes max; still `failed`: say so", plus the page's own check and all-or-nothing batches ("every write is checked before any is written"). This matches the top anchor's validate→fix→retry pattern for batch operations.

Progressive Disclosure

References are clearly signaled one level deep with when-to-read guidance ("read `artifact-type/reference/design-defaults.md` and `artifact-type/reference/one-writer.md` first"), but none of the seven referenced `artifact-type/reference/*.md` files exist in the bundle (only `scripts/` is present), and ~150 lines of Sharing/History/Comments detail that belongs in references is inlined. Not 4 because unresolvable reference paths and inlined reference-grade material are more than minor gaps; not 2 because the in-body structure and signaling are strong.

Specificity

Concrete actions and mechanism are named ("creating, filling, refreshing or revising one", "You write the datasets, then the page as plain HTML, into the dashboard's own store with this skill's script") with near-comprehensive coverage of the core lifecycle. Base score was 5, reduced by 1 for the second-person clause "You write the datasets…", which the voice rule penalizes; it stays above 3 because far more than 1–2 concrete actions are listed.

Completeness

Both questions answered explicitly: what ("a page or scroll story of charts, numbers and tables over datasets… with a Sources panel that shows where every number comes from") and when ("Read it when creating, filling, refreshing or revising one"), with a concrete negative boundary ("Not for a static HTML mockup"). Not 4 because the when-clause is explicit and trigger-phrase-level, not merely present.

Trigger Term Quality

Comprehensive natural-term coverage: "dashboard, metrics page, KPI tracker, scorecard, data visualization or recurring report" spans the synonym space users actually say, plus file formats ("a CSV/TSV/JSON file"). Not 4 because both synonyms and extensions are covered, matching the top anchor.

Distinctiveness Conflict Risk

The niche is well carved ("opens in the bundled live editor", "Not for a static HTML mockup or a picture of a dashboard"), but the trigger term "data visualization" invites minor overlap with generic charting skills. Not 5 because of that overlap; not 3 because the local-editor/store framing is clearly distinct from document or mockup skills.