Conciseness

The body is dense and operational throughout — it never explains git basics Claude already knows, and the Context table's "Non-zero / empty means" column is high-value compressed guidance. Two rationale paragraphs (why `git commit -F` avoids shell parsing, and why the trailing path list is required) each run longer than needed and could be trimmed to a sentence, matching anchor 4's "minor instances of over-explanation that could be trimmed" rather than anchor 5's every-token-earns-its-place.

Actionability

Every step is copy-paste ready: exact commands (`git checkout -b <name>`, `git commit -F <message-file> -- file1 file2 file3`, `git branch --show-current`), a fallback chain for the default branch, and good/bad message examples ("Fix double-submit on checkout" vs "Update checkout.rb"). Nothing is pseudocode or abstract; this matches the anchor-5 fully-executable pattern, and it is not level 4 because there are no gaps in the common-case path.

Workflow Clarity

A numbered 0–7 sequence with explicit validation checkpoints at every fragile point: step 1's nothing-to-commit stop (with the caveat that `git diff HEAD` misses untracked files), step 2's re-read of the branch after checkout, step 24's "Re-read branch and staged set immediately before committing", and step 7's post-commit `git status` confirmation. The "Done when / Stop when" line and the instruction to interpret non-zero exits rather than suppress them provide the checklist and error-recovery framing of anchor 5; the destructive/batch cap does not apply since verification is present.

Progressive Disclosure

This is a single-file skill of roughly 50 body lines with no references/, scripts/, or assets/ bundle, and none is needed — the skill never points to files that don't exist. Content is cleanly split into a Context section (command table) and a numbered Workflow, satisfying the simple-skill exception where well-organized sections alone earn anchor 5. It is not level 4 because there is no content that should have been split out into a separate file.

Specificity

"Create a git commit with a clear, value-communicating message" names a concrete, precisely qualified action in correct third person. It stays at a single action rather than listing several specific behaviors (e.g., message authoring, branch handling, logical grouping), so it matches anchor 4 with minor coverage gaps rather than anchor 5's comprehensiveness.

Completeness

It explicitly answers both questions with concrete trigger phrases: the "what" is "Create a git commit with a clear, value-communicating message" and the "when" is an explicit "Use when the user asks to commit/save staged or unstaged changes with a repo-appropriate message" clause. This mirrors the anchor-5 example's structure; it cannot be the level below because anchor 4 requires a "when" that is weaker or less explicit, and there is nothing above.

Trigger Term Quality

"commit/save staged or unstaged changes" captures the natural synonyms users say ("commit", "save my changes", "staged") plus "repo-appropriate message" for the message angle. A few natural phrasings like "check in", "make a commit message", or "git commit" verbatim are absent, so it sits between anchor 4 and 5.

Distinctiveness Conflict Risk

The git-commit niche with commit/save triggers is well differentiated from generic skills, and "staged or unstaged changes" is a strong discriminator. There is minor overlap risk with a sibling commit-push-PR skill (whose boundary is only stated in the body as "No push, no PR — use ce-commit-push-pr"), keeping it just below anchor 5.