The body is lean and avoids explaining basics Claude already knows, but the intro paragraph, the "What is covered in this Skill?" bullets, the Scope line, and the "When to use this skill" list overlap each other and duplicate the description; it could be tightened. Not score 3 because of this redundancy, not score 1 because nothing is padded with concept explanations.

Provides some concrete guidance — the VERIFY command "`./mvnw clean verify` or `mvn clean verify`", a meter-type-to-behavior mapping, and named bad tag values (userId, UUID, raw URL) — but no executable Micrometer meter-instrumentation code examples, with the good/bad examples deferred to the reference. Not score 1 because concrete commands and rules exist; not score 3 because nothing is copy-paste ready instrumentation.

A clear 4-step sequence (Define goals → Select meter types → Harden → Validate) with an explicit validation checkpoint in step 4 reinforced by the VERIFY constraint and the mvn command. Not score 2 because the checkpoint is explicit rather than implicit; metrics instrumentation is not a destructive/batch operation that would cap the score at 2 for a missing retry loop.

A concise overview SKILL.md (~50 lines) with well-organized sections pointing via a clearly signaled markdown link to the verified one-level-deep file references/182-java-observability-metrics-micrometer.md (462 lines, no further nesting). Not score 2 because the reference is clearly signaled and the split is appropriate.

Lists multiple specific concrete capabilities — "meter design, naming/tag conventions, cardinality control, timers/counters/gauges/distribution summaries, percentiles/histograms, Actuator/Prometheus integration, and metrics validation through tests" — matching the score-3 anchor; it is not score 2 because the actions are comprehensive rather than a partial domain mention.

Clearly answers both what (the capability list) and when via the explicit "Use when you need to implement or improve Java metrics observability..." clause plus a trigger list; the present 'Use when' clause avoids the score-2 cap.

"Improve metrics; Apply Micrometer; Add metrics observability; Refactor Micrometer instrumentation; Add Micrometer timers counters or gauges to Java services" are natural phrasings a user would actually say, with good coverage; not score 2 because common variations are present rather than sparse.

"Java metrics observability with Micrometer" pins a specific language, library, and domain, giving a clear niche unlikely to conflict with other skills; not score 2 because the scope is narrow, not merely 'somewhat specific'.