Conciseness

The body is lean and assumes AWS competence — no explanations of what a VPC or NAT gateway is. Minor trimming is possible: the Overview paragraph restates the frontmatter description almost verbatim ("public and private subnets... internet gateway, NAT gateways... following AWS Well-Architected principles"), and the 0.0.0.0/0 guidance appears both in the `allowed_web_cidrs` parameter note and again in Troubleshooting. That duplication places it at anchor 4 ('minor instances... could be trimmed') rather than anchor 5's every-token-earns-its-place.

Actionability

Concrete, executable elements are present: exact parameter names with required/optional status, defaults, and ranges ("availability_zones (optional, default 3): Number of AZs (2–6)"), a runnable command ("aws ec2 describe-availability-zones"), and an unambiguous pointer to the full procedure ("follow the procedure exactly. See [Production VPC creation procedure](references/create-production-vpc-multi-az.md)"). It stops short of anchor 5 only because the body itself contains no executable creation sequence — the copy-paste-ready steps all live in the reference file.

Workflow Clarity

The body clearly delegates the multi-step sequence to the referenced procedure and surfaces the key checkpoints: dependency/AZ verification ("The target region must have at least 2 available AZs. Use aws ec2 describe-availability-zones to verify") and the NAT Gateway wait before route table configuration ("The procedure waits for availability before configuring route tables"). The referenced procedure itself contains an explicit numbered sequence with verification steps (verify dependencies, validate region/AZs, wait for NAT availability), so validation is not absent; the score sits at 4 rather than 5 because the sequence is not laid out inline in the body and some intermediate checkpoints (e.g., post-creation verification) are only implicit here.

Progressive Disclosure

The structure matches the anchor-5 pattern exactly: a short well-organized body (Overview, Create a production VPC, Troubleshooting) with a single, clearly signaled, one-level-deep reference — "See [Production VPC creation procedure](references/create-production-vpc-multi-az.md)" — which is a real 221-line file containing the detailed steps and full parameter documentation. The bulk of the detail is appropriately split out of SKILL.md and navigation is unambiguous.

Specificity

The description lists multiple concrete capabilities — "public and private subnets across multiple Availability Zones, including internet gateway, NAT gateways, route tables, and security groups" — comprehensively covering the components of a production VPC. Anchor 4 ('several specific actions; minor gaps') fits less well because no meaningful VPC component is missing; the enumeration matches the comprehensiveness of the anchor-5 example.

Completeness

Both halves are explicit: what — "Creates a production-ready VPC with public and private subnets... internet gateway, NAT gateways, route tables, and security groups"; when — "Use when deploying multi-AZ VPC infrastructure with automatic CIDR planning and DNS resolution". This mirrors the anchor-5 example's structure of a concrete capability list followed by an explicit 'Use when' clause with concrete trigger phrases.

Trigger Term Quality

Natural terms users would say are well covered: "VPC", "multi-AZ", "Availability Zones", "public and private subnets", "NAT gateways", "CIDR planning", "DNS resolution". A few plausible entry phrases are absent (e.g., "AWS networking", "set up subnets", "production network"), keeping it just below the comprehensive-with-synonyms anchor 5; it is clearly above anchor 3, which expects missing common variations.

Distinctiveness Conflict Risk

The niche is clear (production multi-AZ VPC creation with CIDR planning and DNS) and triggers are distinctive, but the description would also fire for generic requests like "create a VPC" or "set up security groups" that might belong to simpler AWS networking skills — minor overlap risk with closely related skills, matching anchor 4 rather than the minimal-conflict anchor 5.