Conciseness

The body is lean and code-forward, but contains minor trimmable material: the opening definition sentence ("TSL... is a node-based shader abstraction that lets you write GPU shaders in JavaScript instead of GLSL/WGSL strings") and the "When to Use This Skill" list, which largely duplicates the frontmatter description. Not a 5 due to this redundancy; clearly above 3 because there is no padding or explanation of concepts Claude already knows beyond the one-line TSL definition.

Actionability

Mostly executable guidance: a Quick Start snippet ("new THREE.WebGPURenderer(); await renderer.init();"), concrete node-material property swaps ("material.colorNode = texture(map)"), a chaining example, and an Fn() example. Not a 5 because the Quick Start is a fragment (no scene/camera/render loop), the Fn() example uses normalWorld/viewDir without showing how to obtain them, and copy-paste-ready equivalents are only reachable via the file listing.

Workflow Clarity

The Quick Start gives an unambiguous entry sequence (create renderer → await init → build node material) and deeper multi-step work is clearly delegated to the enumerated docs/examples/templates. No destructive or batch operations are involved, so no validation checkpoints are required; not a 5 because no multi-step workflow (e.g., a project setup or GLSL→TSL migration sequence) is actually walked through in the body.

Progressive Disclosure

The "Skill Contents" section enumerates every bundle file with a one-line description, grouped by category (Documentation, Examples, Templates, Reference), and the body keeps only the quick start and key concepts inline — a clear overview with well-signaled, one-level-deep references and easy navigation, matching the top anchor.

Specificity

Lists several specific coverage areas — "WebGPU renderer setup, TSL syntax and node materials, compute shaders, post-processing effects, and WGSL integration" — but these are topic areas introduced by "Covers" rather than concrete actions, and "Comprehensive guide" is mild padding. Not clearly a 5 since it lacks action-verb phrasing like the top anchor; well above 3 because five distinct technical areas are named.

Completeness

Explicitly answers both: "what" ("developing WebGPU-enabled Three.js applications using TSL... Covers WebGPU renderer setup... WGSL integration") and "when" ("Use this skill when working with Three.js WebGPU, TSL shaders, node materials, or GPU compute in Three.js") with concrete trigger phrases, matching the top anchor's structure exactly.

Trigger Term Quality

The trigger clause includes natural terms users would say — "Three.js WebGPU, TSL shaders, node materials, GPU compute" — giving good keyword coverage. Not a 5 because common variations like "WebGPU renderer", "compute shader", or "migrating from GLSL" are absent; clearly above 3 since multiple relevant natural phrases are present.

Distinctiveness Conflict Risk

Clear niche — WebGPU + Three.js + TSL — with distinct, unambiguous triggers; minimal risk of firing for the wrong skill. It would not plausibly conflict with generic Three.js or general shader skills because the WebGPU/TSL qualifiers are explicit.