Conciseness

The ~30-line body is lean and assumes Claude's competence: "Bind the subscription, cluster, resource group, and kube context", "Keep reads non-mutating; require approval for every change" — no concept explanations, no padding, every token earns its place (anchor 5).

Actionability

Steps are concrete but incomplete: step 2 says "Route to [NAP readiness]... [bin-packing]... [node-scaling bottlenecks], or [storage optimization]" without any selection criteria for choosing among them, and "Prefer fitting Azure MCP reads" names no specific tools or commands. This matches anchor 3 ('some concrete guidance but incomplete; missing key details') rather than anchor 4's concrete commands with minor gaps.

Workflow Clarity

A coherent numbered sequence (bind context → route → commitment handoff → safety) with explicit checkpoints: "require approval for every change" and "Evidence conflict: mark the conclusion unconfirmed". Matches anchor 4 ('clear sequence with most checkpoints present'); not anchor 5 because the routing decision in step 2 lacks explicit criteria, and the read-only workflow limits feedback-loop needs.

Progressive Disclosure

SKILL.md is a clean overview with five well-labeled links (all verified to exist) to primary references — good structure per anchor 4. Scored against the actual bundle: 8 of the 13 reference files are reachable only via nested chains 2–3 levels deep (e.g. aks-storage-optimization.md → storage-metrics.md → storage-container-insights.md), so it falls short of anchor 5's 'one-level-deep references' while clearly exceeding anchor 3's buried references.

Specificity

The action verb is generic ("Analyze advanced AKS cost efficiency"), but the WHEN clause explicitly names several concrete analysis areas — "AKS NAP readiness", "AKS bin packing", "AKS node scaling bottleneck", "AKS blocked scale-down", "AKS storage cost" — matching anchor 4 ('lists several specific actions; minor gaps'). It falls short of anchor 5 because the capability list is acronym-triggered rather than fully stated actions, and exceeds anchor 3's '1-2 concrete actions'.

Completeness

Both parts are present: what ("Analyze advanced AKS cost efficiency") and an explicit WHEN clause with concrete quoted trigger phrases, plus routing exclusions. Below anchor 5 because the 'what' is a single abstract clause rather than an enumerated capability list; above anchor 4's typical 'when could be more explicit' since the when-guidance here is fully explicit.

Trigger Term Quality

Triggers like "AKS bin packing" and "AKS blocked scale-down" are natural phrases a user would say, giving good keyword coverage (anchor 4). Missing natural variations — 'node auto-provisioning' spelled out, 'Karpenter', 'unschedulable pods', 'scale-up' — keep it below anchor 5's comprehensive synonym coverage, while it clearly beats anchor 3's partial keyword set.

Distinctiveness Conflict Risk

The "DO NOT USE AS DIRECT ENTRY FOR" clause explicitly routes overlapping use cases to named sibling skills (azure-kubernetes, cost-analysis/cost-optimization, aks-troubleshooting), establishing a clear niche with distinct triggers and minimal conflict risk — a direct match for anchor 5.