Conciseness

The body is lean: it lists only the commands and decision points Claude does not already know (workspace paths, protected-file list, report format), avoiding any explanation of what lint/format/tsc are.

Actionability

Every check provides copy-paste-ready commands and a concrete workspace command table, plus explicit pass/fail report templates covering the common cases.

Workflow Clarity

Checks are numbered 0-7 in a clear sequence with explicit validation checkpoints ('Resolve any issues before proceeding', 'Fix all type errors before proceeding') and a defined pass/fail feedback loop at the end.

Progressive Disclosure

The skill is a focused, well-organized single-file overview under 180 lines with no external references needed; per the rubric's simple-skill guidance this scores 5 with well-organized sections.

Specificity

Lists several concrete actions (format, lint, TypeScript check, protected file check) and concrete detection logic (which workspaces changed), with only minor coverage gaps such as test-running being mentioned only in the table.

Completeness

Clearly states what it does (the five validation checks with workspace-aware scoping) and gives an explicit 'Use before submitting any PR...' when clause; the when could be slightly more specific about trigger contexts.

Trigger Term Quality

Includes natural trigger phrases like 'Use before submitting any PR', 'to check if code is ready', and 'validate a branch before review' that a user would plausibly say, though it lacks short synonyms like 'pre-PR check'.

Distinctiveness Conflict Risk

The 'Pre-PR validation' niche and the specific check set distinguish it from generic lint/test skills, with only minor overlap risk against a plain lint skill.