Conciseness

The body is dense and operational — it never explains what a WAF, jq, or curl is, and the time-series 'get vs list' gotchas (output shape, bucket size, zero handling) are exactly the non-obvious knowledge Claude lacks. Not 5: hardcoded time-sensitive example dates ('--from=2026-08-01T00:00:00Z') sit outside any old-patterns section, and a few Error Handling rows ('jq is not installed' → 'brew install jq') state fixes Claude already knows — minor over-explanation that could be trimmed. Not 3: nothing is concept over-explanation and nearly every sentence carries skill-specific information.

Actionability

Every step ships a complete, copy-paste-ready command with all required flags — 'fastly ngwaf workspace list --json | jq -r '.[].id'', the fully encoded curl URL for the requests API, and time-series invocations specifying '--metrics', '--granularity', and RFC 3339 timestamps — plus a bundled runnable script ('bash "$NGWAF_SKILL_DIR/scripts/assess_ngwaf_rules.sh"') covering the common case. Matches anchor 5: fully executable commands covering the common cases; no pseudocode or missing-key-detail gaps.

Workflow Clarity

A clearly sequenced 5-step workflow where steps 3–5 are themselves validation checkpoints, each with an interpretation rule ('If empty, NGWAF is not configured', 'When LOGINATTEMPT is missing or disabled, search recent request logs', 'Report it even when every rule checks out'), plus an Error Handling table for recovery and Expected Output healthy/unhealthy examples. The audit is read-only, so the destructive/batch validation cap does not apply. Not 4: checkpoints are explicit at every step, not merely present.

Progressive Disclosure

The single bundle file (scripts/assess_ngwaf_rules.sh) is real and clearly signaled in Quick Start with its exact invocation path, one level deep with no nesting, and the design is sound — run the bundled script as the primary path, manual steps inline as fallback. Not 5: all reference material lives inline in the ~175-line body (time-series get/list gotchas, expected-output examples) with no references/ split, so 'content appropriately split' is only partially met. Not 3: structure is good, the existing reference is clearly signaled rather than buried, and navigation via section headers is easy.

Specificity

Enumerates multiple concrete actions — 'audit that critical templated protection rules are configured and enabled', 'checking for missing or disabled login protection rules', 'identifying potential login endpoints not covered by NGWAF rules', 'comparing attack traffic against blocked traffic' — covering every capability of the skill. This matches the anchor 'Lists multiple specific concrete actions; comprehensive coverage' rather than 4, since no capability gap exists (the triggers mirror the full audit workflow).

Completeness

Explicitly answers both: what ('Performs an internal audit of Fastly Next-Gen WAF (NGWAF) workspaces to audit that critical templated protection rules are configured and enabled') and when ('Use when auditing NGWAF workspace security posture, checking for missing or disabled login protection rules...'), with concrete trigger phrases for each scenario. Clear anchor-5 match; the 'Use when' clause is present and specific.

Trigger Term Quality

Natural phrases a user would say are comprehensively covered: 'auditing NGWAF workspace security posture', 'missing or disabled login protection rules', 'credit card validation rules', 'gift card protection rules', 'attack traffic against blocked traffic', with the abbreviation expansion 'Fastly Next-Gen WAF (NGWAF)' providing synonym coverage. Not 4: the enumerated triggers already cover the common variations ('audit my WAF rules', 'check disabled rules'); the signal names supplement rather than replace natural terms.

Distinctiveness Conflict Risk

Scoped to a clear niche — auditing Fastly Next-Gen WAF workspaces — with distinct triggers (NGWAF signal names, login/CC/GC rule auditing, attack-vs-blocked traffic) that no generic security or Fastly-adjacent skill would claim. Minimal conflict risk, matching the anchor-5 example's profile.