Conciseness

The body is dense and operational — numbered steps, exact metric names, formulas, and copy-paste PromQL/YAML — with almost no explanation of concepts Claude already knows. Not 5 because ~35 lines of full SLO alert YAML and the interactive wizard prompt blocks are inline detail that could be trimmed or moved to the reference file.

Actionability

Guidance is fully executable: exact metric names ('http_requests_total', 'http_request_duration_seconds'), a sizing formula 'replicas = ceil((peak_rps × avg_latency_s) / target_concurrency_per_pod)', a runnable k6 command ('k6 run --out json=results.json load-test.js'), complete burn-rate alert YAML with runbooks, and specific histogram bucket values (0.1, 0.25, 0.3, 0.5, 1.0, 2.5). Matches 'Fully executable; copy-paste ready... specific examples cover the common cases'.

Workflow Clarity

Each mode has a clear numbered sequence, and several include explicit validation — alert mode step 5 ('no alert fires on healthy baseline, alert fires on injected fault') and loadtest result interpretation against thresholds. Fits 'Clear sequence with most checkpoints present; minor validation gaps'. Not 5 because instrument and dashboard modes end with no verification step (e.g. checking /metrics is scraped or the dashboard renders).

Progressive Disclosure

Every mode consistently signals a one-level-deep reference ('Reference: references/observability.md → <section>'), but that file does not exist in the bundle — there is no references/ directory — so the navigation path is broken. Additionally the SLO mode inlines the full alert YAML that the reference pattern suggests belongs elsewhere. Fits 'references present but not clearly signaling usable content / could be better organized'; not 4 because a cited-but-missing file is more than a minor organization gap.

Specificity

The description lists multiple concrete actions across the domain: 'Instrument services with structured logging, Prometheus metrics, and OpenTelemetry tracing. Build Grafana dashboards, write Prometheus alerting rules, run k6 load tests, and plan infrastructure capacity.' This matches the anchor 'Lists multiple specific concrete actions; comprehensive coverage' — five distinct, named capabilities with specific tooling. Not 4 because coverage spans all six skill modes (only SLO work is implicit in 'alerting rules') with no generic filler.

Completeness

The 'what' is explicit and concrete (instrument, dashboards, alerts, load tests, capacity), but there is no 'Use when...' clause or equivalent explicit trigger guidance — per the judging guidelines this caps completeness at 3. The anchor 'Has a clear what but when is missing or only weakly implied' is the exact fit; not 4 because nothing in the text signals when to invoke it.

Trigger Term Quality

Natural terms users would say are well covered: 'Prometheus metrics', 'Grafana dashboards', 'alerting rules', 'load tests', 'tracing', 'structured logging'. Not 5 because common synonyms and variations are missing — 'monitoring', 'observability', 'SLOs', 'error budgets', 'alert rules' — none appear, and the skill's own slo mode has no trigger term in the description.

Distinctiveness Conflict Risk

Named technologies (Prometheus, Grafana, OpenTelemetry, k6) form a clear observability niche with distinct triggers, fitting 'Mostly distinct; minor overlap risk'. Not 5 because 'Build Grafana dashboards' and general dashboard/chart language overlaps with visualization skills, and capacity planning could brush against generic infra-sizing skills.