The body is lean and assumes Claude's competence — no padding explaining what AWS or billing is — and dense tables plus punchy critical-rule guardrails earn their tokens, with only minor restatement in the Overview.

Provides fully executable, copy-paste-ready AWS CLI commands with real flags and a complete budgets create-budget JSON block including a concrete ARN format, matching the executable-code anchor.

The cost audit enumerates a clear inline 7-step sequence and right-sizing gives an opt-in-then-read sequence, plus two explicit pre-flight validation checkpoints ('Always Check the Current Date', 'Deterministic Calculations').

A clear overview points to one-level-deep references via a decision-guide table and inline cues; all 15 cited references/*.md paths were verified to exist as real files, so navigation is easy and well-signaled.

Lists many concrete, service-specific actions such as 'right-size EC2/Lambda/RDS/EBS with Compute Optimizer' and 'query CUR with Athena' rather than vague language, matching the multiple-specific-actions anchor.

It explicitly answers both 'what' via the enumerated action list and 'when' via an explicit 'Triggers on:' clause, satisfying the what-and-when anchor.

The 'Triggers on:' clause covers natural phrasings a user would actually say ('reduce spend', 'budget alert', 'AWS bill', 'free tier', 'cost anomaly') with good variation coverage.

AWS billing/cost management is a clear niche with domain-specific triggers ('CUR', 'billing view ARN', 'savings plan') unlikely to fire for unrelated skills.