Conciseness

The body is dense and imperative, teaching only project-specific contracts (MCP tool names, CLI flags, schema fields, render budgets) rather than concepts Claude already knows. It is not a 5 because the Extended Workflow routing list ('imports, prefabs, patterns, unfamiliar components, schema errors, image reconstruction...') and the do-not-load-it-on-the-Fast-Path instruction each repeat three times and could be consolidated.

Actionability

Fully executable guidance throughout: the exact MCP tool list, CLI commands with flags and JSON payloads, a complete copy-paste minimal scene JSON, exact budgets ('at most three scene renders, two compact image reads, and one correction round'), exact component payload fields, and concrete failure-handling steps — matching the copy-paste-ready anchor.

Workflow Clarity

The Fast Path is a numbered seven-step sequence with explicit validation gates (render the first hero at 512×512 or smaller, verify the correction at 384×384, 'open the file, confirm clean state, and run the application build', then stop), and error-recovery feedback loops are given (iwsdk runtime wait/status/logs, preserve the structured failure and report the visual-verification gate as blocked). The Extended Workflow reference adds a gated finish checklist.

Progressive Disclosure

SKILL.md is a genuine overview that keeps the common path inline and deliberately defers the long material ('Load the long scene-format material only for imports, prefabs, patterns, or after a concrete schema rejection'), with both directly referenced files (extended-workflow.md, environment-recipes.md) present in the bundle. extended-workflow.md clearly signals each of the five focused references with an explicit per-file condition, making navigation easy and the split appropriate.

Specificity

The description names the domain and concrete capabilities ('Compose and review IWSDK scenes from existing manifest assets using scene JSON, placement, scale, contacts, prefabs, patterns, lighting, environment, cameras, and final framing') with explicit boundary exclusions. It falls short of a 5 because only two distinct verbs are given and the skill's stateful-interaction scope (grab/ray activation) covered in the body is absent.

Completeness

The 'what' is clear and concrete, but there is no positive 'Use when...' clause; the negative routing ('Does not author geometry or materials; create or repair an individual 3D asset with iwsdk-build-model') only weakly implies when to use this skill. Per the guideline that a missing 'Use when' clause or equivalent explicit trigger guidance caps completeness at 3, this fits anchor 3 rather than 4.

Trigger Term Quality

Good coverage of natural domain terms a user would say — 'scenes', 'assets', 'placement', 'lighting', 'environment', 'cameras', 'framing' — plus the sibling-skill trigger 'iwsdk-build-model'. It is not a 5 because synonyms (e.g., 'arrange' or 'assemble') and the concrete scene file extension (.iwsdk.scene.json) are missing.

Distinctiveness Conflict Risk

The IWSDK niche is explicit and the description actively disambiguates from the sibling skill ('create or repair an individual 3D asset with iwsdk-build-model'), giving distinct triggers with minimal conflict risk — a clear match to anchor 5.