Conciseness

The prose sections are lean and Rill-specific (inline-vs-standalone rules, legacy auto-emit behavior) — genuinely non-obvious information. But the ~140-line inline JSON schema duplicates much of what the annotated example already explains (banner, defaults, time_ranges, security all appear twice), which is unnecessary padding that could be trimmed. This is "mostly efficient but includes some unnecessary explanation or could be tightened", anchor 3, not anchor 4's "minor instances".

Actionability

Three copy-paste-ready YAML examples (inline explore, fully annotated stand-alone, minimal stand-alone) cover the common cases, and the guidance includes concrete decision rules like "do NOT create a stand-alone type: explore file... edit the explore: block in the metrics view file" and exact field-selector syntax ('*', a list, or {exclude: [...]}). Fully executable and specific — anchor 5, and clearly not anchor 4 since no key details are missing for the common paths.

Workflow Clarity

The decision sequence is clear and well-ordered: check for an existing inline explore first, edit the explore: block if present, only create a stand-alone file when multiple explores are needed or the user asks. However there is no validation checkpoint (e.g., verifying the dashboard reconciles or renders), which keeps it at anchor 4 ("most checkpoints present; minor validation gaps") rather than 5. The skill is not destructive/batch, so the workflow-clarity cap of 3 does not apply.

Progressive Disclosure

The "Reference documentation" section inlines ~140 lines of raw JSON schema that clearly belongs in a separate reference file — this is precisely anchor 2's "content that clearly belongs in separate files is inlined" (the anchor example is an inlined API reference). No bundle files exist (no references/, scripts/, or assets/ directories), so the schema cannot be reached on demand; it cannot score 3, which would require a present, if poorly signaled, reference structure.

Specificity

"Detailed instructions and examples for developing explore dashboard resources in Rill" names the domain (Rill explore dashboards) but the only action offered is the generic "developing"; "detailed instructions and examples" is filler rather than a concrete capability. It matches anchor 2 ("Names the domain but actions are minimal or generic") and falls short of anchor 3, which requires 1-2 concrete named actions like "create" or "configure dimensions and measures".

Completeness

The "what" is clear (instructions and examples for developing explore dashboards in Rill), but there is no "Use when..." clause or equivalent explicit trigger guidance, which the judging guidelines cap at 3. Anchor 4 requires both a "what" and a "when", and no "when" is present or even weakly implied.

Trigger Term Quality

"explore dashboard" and "Rill" are natural terms a user would say, but common variations and synonyms are missing — users would likely say "dashboard", "metrics view", "build/create a dashboard", or mention YAML/dashboard configuration. This is "some relevant keywords but missing common variations", anchor 3, not anchor 4's "good keyword coverage".

Distinctiveness Conflict Risk

The phrase "explore dashboard resources in Rill" carves out a clear niche with a distinct product-specific trigger ("Rill", "explore dashboard"), so conflict risk with unrelated skills is minimal. It is not a 5 because it could still overlap with closely related Rill skills (e.g., canvas dashboards or metrics views), which anchor 4 ("Mostly distinct; minor overlap risk with closely related skills") describes exactly.