Conciseness

The body is efficient and assumes Claude's git competence — the branch model table and naming examples are project-specific knowledge Claude lacks, and code blocks are minimal. Only minor trimmable redundancy (the intro line 'Cut a new branch for the GitHub repository' restates the description). Not a 5 because of that small redundancy; not a 3 because there is no over-explanation of concepts Claude already knows.

Actionability

Provides concrete, executable commands ('git checkout main', 'git pull --ff-only', 'git checkout -b <type>/<short-slug>') with concrete naming examples. Not a 5 because the slug is a placeholder and step 1 defers type selection to 'Ask (or infer)', leaving a small gap before copy-paste readiness; not a 3 because the given commands are real and runnable, not pseudocode.

Workflow Clarity

A clear four-step sequence (determine type → update main → create branch → keep scoped and open PR) with concrete commands per step. Not a 5 because there are no explicit validation/checkpoint steps (e.g., confirm main is current or branch was created); not a 3 because the sequence is well-defined and branch creation is non-destructive, so the missing-validation cap does not apply.

Progressive Disclosure

The skill is under 50 lines with no need for external references (no references/scripts/assets bundle exists), and content is organized into clear sections (Branch model, Steps, Naming) — meeting the simple-skill exception for a top score. Not lower because structure is clean and navigation within the single file is unambiguous.

Specificity

Names the domain ('GitHub branch from main') and one concrete action (create a branch with the naming convention), but coverage is not comprehensive — it is a single action rather than a list of capabilities. Not a 2 because the action is concrete and domain-specific rather than generic; not a 4 because there are not several specific actions listed.

Completeness

Has a clear 'what' ('Create a GitHub branch from main with the project naming convention') but no 'Use when...' clause or equivalent explicit trigger guidance, which caps completeness at 3 per the judging guidelines. Not a 4 because 'when' is entirely absent rather than weakly present.

Trigger Term Quality

Includes relevant natural terms ('GitHub branch', 'main', 'naming convention') that a user might say, but misses common variations/synonyms like 'new branch', 'feature branch', or 'cut a branch'. Not a 4 because keyword coverage is limited to a narrow phrasing rather than broad natural-term coverage.

Distinctiveness Conflict Risk

The project-specific naming convention angle gives it a clear niche distinct from generic git skills, with only minor overlap risk against general branch/git workflows. Not a 5 because 'create a branch' could still overlap with broader git helper skills absent an explicit trigger phrase.