Conciseness

The body is dense but efficient: a parameter table with shapes and clamping rules, a complete response example, and a copy-paste curl command. The gas-semantics paragraphs (lines 70-74) repeat coverage and caveat statements that could be consolidated, matching anchor 4 (efficient with minor over-explanation to trim) rather than 5.

Actionability

Provides an exact endpoint URL, auth header format, full parameter table with types and defaults, an executable curl example with jq projection, and error codes with retry guidance. This is copy-paste ready and covers common cases, matching anchor 5.

Workflow Clarity

As a single-task API skill, the single action (present key header, GET with parameters, interpret response flags) is unambiguous, with explicit error-recovery paths for 401, 429 (retry with backoff), and degraded data via dataAvailable/coverageLevel. The simple-skill exception applies; there are no destructive or batch operations requiring a validation cap.

Progressive Disclosure

Content is well-organized under clear section headers, with core interpretation material inline and deeper material (OpenAPI spec, auth matrix, docs) delegated one level deep via a References section. At ~105 lines with several dense gas-semantics paragraphs that could live in a reference file, it matches anchor 4 (good structure, minor organization gaps) rather than 5.

Specificity

"Model oil or gas supply shock exposure for a country and chokepoint" names a specific domain and one concrete action, but lists only a single action verb without secondary capabilities (products affected, cover days, gas sensitivity). It matches anchor 3 (domain plus 1-2 concrete actions, not comprehensive) rather than 4, which requires several listed actions.

Completeness

It explicitly answers both questions: what ("Model oil or gas supply shock exposure for a country and chokepoint") and when ("Use when the user asks how an energy disruption could affect fuel supply, strategic cover, or product deficits") with concrete trigger topics. The 'when' clause is explicit and specific, matching anchor 5 rather than 4.

Trigger Term Quality

Triggers like "energy disruption", "fuel supply", "strategic cover", and "product deficits" are natural user phrasings. Common variants such as "chokepoint", "LNG", or named straits (Hormuz/Malacca) — which the body itself uses as example triggers — are missing, so it falls at anchor 4 rather than 5.

Distinctiveness Conflict Risk

Scenario shock modeling is a clear niche distinct from static energy profiles or chokepoint status checks, but terms like "energy disruption" and "fuel supply" carry minor overlap risk with closely related sibling skills (which the body's own "When NOT to use" section routes around). Anchor 4 (mostly distinct, minor overlap) fits better than 5.