Conciseness

The ~28-line body is lean with no padding: a two-sentence Overview, a single delegation instruction ("follow the procedure exactly"), and three brief troubleshooting entries with concrete specifics. It assumes Claude's competence and every token earns its place, matching anchor 5; there is no unnecessary concept explanation that would drop it to anchor 4.

Actionability

The troubleshooting section gives concrete, executable specifics — exact IAM permissions ("logs:DescribeLogGroups", "logs:StartQuery", "logs:GetQueryResults") and log group patterns ("/aws/lambda/function-name") — and the main procedure is delegated to a real reference file containing concrete aws CLI commands. This fits anchor 4 (mostly executable, minor gaps): the body itself contains no commands for the core workflow, relying entirely on the reference, so it is not fully copy-paste ready as anchor 5 requires.

Workflow Clarity

The single main step is unambiguous ("follow the procedure exactly" with a well-labeled reference), and the referenced procedure (verified) contains explicit validation checkpoints (e.g., "Validate Log Groups and Check Availability", verifying log streams before querying). This matches anchor 4 (clear sequence with most checkpoints present); it is not anchor 5 because the body itself does not summarize the step sequence or validation points, leaving a minor gap for a reader who stays in SKILL.md.

Progressive Disclosure

The body is a clean overview with one clearly signaled, one-level-deep reference ([Application failure troubleshooting procedure](references/application-failure-troubleshooting.md)) that exists and itself contains no nested references. Brief fallback guidance (troubleshooting subsections) is appropriately inlined, matching anchor 5 (clear overview, well-signaled one-level-deep references, easy navigation).

Specificity

The description lists several concrete actions — "discovering and analyzing CloudWatch log groups", "identify error patterns, root causes, and actionable solutions" — covering most of the workflow with minor gaps (e.g., "actionable solutions" is generic and remediation generation is only implied). It matches anchor 4 (several specific actions, minor gaps) rather than anchor 5, which demands comprehensive coverage, and is clearly above anchor 3, which expects only 1-2 concrete actions.

Completeness

It answers both questions explicitly: what ("Troubleshoots failing applications by discovering and analyzing CloudWatch log groups...") and when ("Use when an application is experiencing failures and log-based diagnosis is needed"). The "when" clause is present but "log-based diagnosis is needed" is somewhat abstract rather than a concrete user trigger phrase, matching anchor 4 rather than anchor 5's fully concrete triggers, and well above anchor 3 (weak or missing "when").

Trigger Term Quality

Natural terms include "failing applications", "failures", "CloudWatch", "log", and "diagnosis", which users would plausibly say. It falls at anchor 4 (good keyword coverage, a few natural terms missing) because common phrasings like "debug", "errors", "crashes", or "app is down" are absent; it is well above anchor 3's sparse keyword set.

Distinctiveness Conflict Risk

The CloudWatch log-analysis niche is clearly bounded and unlikely to trigger unrelated skills, fitting anchor 4 (mostly distinct, minor overlap risk). It is not anchor 5 because adjacent AWS skills (e.g., CloudWatch metrics monitoring or general AWS debugging skills) could plausibly compete for similar failure-reporting triggers.