The prose is lean and avoids over-explaining concepts, but the inline input/output JSON schemas are large boilerplate that competes with context budget and could be trimmed or referenced.

It provides copy-paste-ready executable CLI commands including the --input, --input-file, and stdin variants plus troubleshooting, giving concrete and complete guidance.

This single-task skill has an unambiguous action with an explicit guard (every ObjectRef MUST resolve or the tool throws before touching Selection.objects), and the Behavior section sequences assign, repaint, and return.

As a single-file simple skill with no bundle files, it is organized into clear labeled sections (Inputs, Behavior, How to Call, Troubleshooting, Input/Output schemas), satisfying the simple-skill allowance.

It names a concrete action ('Set the current Selection') and a domain (Unity Editor) with a failure condition, but does not list multiple distinct concrete actions like the score-3 example.

The 'what' is clear (set the selection) but there is no 'Use when...' trigger clause, so per the guidelines completeness is capped at 2.

It uses relevant terms ('Selection', 'Unity Editor', 'objects', 'editor-selection-get') but leans on Unity-specific technical jargon and lacks common natural variations users would say.

It targets a narrow Unity Editor selection niche and references a companion skill, making it unlikely to trigger for unrelated skills.