Conciseness

The body is lean with executable commands and minimal over-explanation; a few lines ('Ensure uv is available before running any skill that depends on it') echo the description and could be trimmed, fitting the 4 anchor rather than the fully lean 5.

Actionability

Provides copy-paste-ready, fully executable commands for both Unix/macOS and Windows across check, install, and PATH steps, matching the 5 anchor 'fully executable; copy-paste ready code or commands'.

Workflow Clarity

Steps 1-4 are clearly sequenced with validation checkpoints (uv --version at step 1 and step 4) and skip-ahead logic, but there is no error-recovery guidance if install fails, fitting the 4 anchor rather than 5.

Progressive Disclosure

A simple skill under 50 lines with no external references and no bundle files, but well-organized into intro and a numbered Setup section with clear platform sub-bullets, qualifying for 5 under the simple-skills exception.

Specificity

Quotes three concrete actions — 'Checks whether the uv Python package manager is installed', 'installs it if missing', 'Ensures uv is on PATH' — which is several specific actions covering the scope, but the wording is not richly enumerated, fitting the 4 anchor better than 5.

Completeness

Both 'what' (check/install/PATH) and an explicit 'Use when' clause are present, so it clears the 3-cap; the 'when' is reasonably explicit but trigger phrasing could be more concrete, fitting the 4 anchor.

Trigger Term Quality

Relevant keywords ('uv', 'Python package manager', 'installed', 'PATH') appear, but the only trigger phrase ('Use when another skill requires uv as a prerequisite') is internal/technical rather than natural user language, and common synonyms are missing — matching the 3 anchor.

Distinctiveness Conflict Risk

Names a specific tool ('uv Python package manager') with a clear niche and minimal overlap with other skills, matching the 5 anchor's 'clear niche with distinct triggers; minimal conflict risk'.