Conciseness

The body is lean and efficient with no padding or explanation of concepts Claude already knows; the format template, type list, rules, and examples all earn their place.

Actionability

It gives a copy-paste-ready format template, enumerated types with meanings, concrete rules (72-char limit, imperative mood), and two full examples covering common cases (feature and bug fix); the instruction-skill exception applies since the guidance is fully actionable.

Workflow Clarity

This is a simple single-purpose skill whose single action (write a conventional commit message) is unambiguous, so the simple-skill exception yields a 5; no destructive/batch validation cap applies.

Progressive Disclosure

Under 50 lines with clear section headers (Format, Types, Rules, Examples, Scope Guidelines) and no need for external references, satisfying the simple-skill exception for a 5.

Specificity

Names the domain and one concrete action ('write git commit messages') plus a format spec ('follow conventional commits format'), but coverage is not comprehensive enough for a 4 which requires several distinct actions.

Completeness

It has both an explicit trigger ('When you need to write git commit messages') and a clear 'what' ('follow conventional commits format with clear descriptions'), but only a single trigger phrase rather than the multiple concrete triggers of a 5.

Trigger Term Quality

'git commit messages' is exactly the phrase a user would say, and 'conventional commits' adds the format keyword; a few natural synonyms (e.g. 'commit', 'git log') are missing, so it stops short of 5.

Distinctiveness Conflict Risk

It carves a clear niche (conventional-format git commit messages) with a distinct trigger and minimal overlap risk with other skills.