Conciseness

The body is mostly efficient and assumes AWS/IAM knowledge (no beginner padding), but the 'no register-delegated-administrator CLI operation' warning is repeated almost verbatim in the Overview, the decision rule, the governance bullet, the paragraph after the create-service command, and the Troubleshooting section — several unnecessary repetitions that could be consolidated. It fits the 3 anchor ('mostly efficient but some unnecessary explanation or could be tightened') better than the 4 anchor, since the duplication is substantive rather than minor.

Actionability

Provides a fully executable copy-paste command (`aws resiliencehubv2 create-service --name {service} --regions {regions} --permission-model '{...}'`) with the complete JSON structure, plus concrete troubleshooting checks ('role ARN matches exactly', 'trust policy allows the central account's invoker role', 'externalId matches'). The bulk of executable steps are appropriately delegated to the real one-level-deep reference file (verified to exist with full CLI commands), leaving only minor gaps in the body itself — a 4, not 5, since the body's own setup guidance beyond the single command is thin.

Workflow Clarity

A clear decision rule up front ('To run cross-account resilience assessments... use the per-service cross-account permission model... Do NOT use register-delegated-administrator'), a directed handoff ('follow the procedure exactly. See references/multi-account-procedure.md'), and troubleshooting sections that function as error-recovery feedback loops for the two most likely failures (AccessDenied, no resources discovered). Not a 5 because the body's validation checkpoints are reactive (troubleshooting after failure) rather than explicit inline validation steps — those live in the reference's step constraints.

Progressive Disclosure

Good structure: the body is an overview (mechanism comparison, decision rule, one key command, troubleshooting, security notes) with a clearly signaled, verified one-level-deep reference (references/multi-account-procedure.md, 120-line SOP with parameters and steps) and no nested references. Not a 5 because some content duplicated between body and reference (the delegated-administrator caveat appears in both, and the create-service form also appears in the reference's step set) is inline rather than fully split.

Specificity

Names the domain precisely ('AWS Resilience Hub v2', 'multi-account resilience management across an AWS Organization') and lists several specific capabilities ('per-service cross-account permission model, cross-account IAM roles, and centralized assessment from a single account'), but the verbs 'Configures'/'Covers' describe topic areas rather than fully enumerating concrete actions, leaving minor gaps versus the comprehensive 5 anchor.

Completeness

Explicitly answers both questions: what ('Configures AWS Resilience Hub v2... Covers the per-service cross-account permission model, cross-account IAM roles, and centralized assessment') and when ('Applies when the user wants to set up org-wide resilience or assess workloads that span multiple AWS accounts'). Both are concrete and use third-person voice, matching the 5 anchor; the 4 anchor applies only when the 'when' clause is less explicit.

Trigger Term Quality

Natural user phrasings are well covered — 'set up org-wide resilience', 'assess workloads that span multiple AWS accounts', 'centralized assessment', 'multi-account' — matching how users would actually ask. A few natural variants ('member accounts', 'central account', 'AWS Organizations setup') are missing, so it falls just short of the comprehensive-synonym 5 anchor.

Distinctiveness Conflict Risk

A clear niche — Resilience Hub v2 multi-account/cross-account configuration — with distinct trigger phrases (org-wide resilience, workloads spanning multiple AWS accounts) that are unlikely to fire for unrelated skills. It is far more specific than the 4 anchor's 'minor overlap risk with closely related skills'.