Conciseness

The body is lean with no concept padding (no explanation of what WebGL or cobe is), but the "When to use" section lightly echoes the frontmatter description and the ~40-line recipe, while justified, is borderline inline bulk, so it sits just below a 5.

Actionability

The Quick recipe is complete, copy-paste-ready JavaScript covering the common case (responsive sizing, DPR clamping, markers, ambient rotation, resize teardown/recreate), and the Key APIs and pitfalls give concrete, executable guidance.

Workflow Clarity

This is a single-purpose, non-destructive render task; per the simple-skill exception the single unambiguous setup-plus-resize sequence scores a 5, and no destructive/batch validation cap applies.

Progressive Disclosure

The skill is self-contained with no bundle files, and content is organized into clearly signaled sections (When to use, Key APIs, Common pitfalls, Quick recipe, What to ask the user), satisfying the well-organized-sections exception for reference-free skills.

Specificity

The description enumerates several concrete capability areas — "canvas setup, markers, interaction, performance, integration with React/Next.js" — naming the domain plus multiple specific sub-tasks, though they read more as concerns than crisp action verbs, so it sits just below a 5.

Completeness

It contains an explicit "Use when..." trigger and states what the skill does (adding an interactive globe with the listed concerns), but the "when" is a single combined clause rather than a rich set of concrete trigger phrases, keeping it just below a 5.

Trigger Term Quality

Natural terms like "lightweight interactive globe", "cobe", "markers", and "React/Next.js" would plausibly be said by a user wanting this skill, but common synonyms such as "spinning globe", "3D globe", or "earth" are missing.

Distinctiveness Conflict Risk

"lightweight interactive globe with cobe" carves out a clear niche tied to a specific library, with distinct triggers and minimal overlap risk against other skills.