The content is mostly efficient and well-structured, but includes some sections that could be tightened. For example, the anti-patterns list and context-file guidance gating section add useful but somewhat verbose detail. The procedure steps have minor redundancy (e.g., step 7 'Validate' partially restates earlier constraints). Overall reasonable but not maximally lean.

The skill provides highly concrete, specific guidance: exact commit message format patterns, specific imperative verbs to use, clear rules for when to add body content, explicit file path patterns to check (context/plans/*.md), and precise instructions for when to stop and ask for clarification. This is an instruction-only skill that achieves strong actionability without needing code examples.

The 7-step procedure is clearly sequenced with logical progression from analysis through validation. It includes explicit validation in step 7, a feedback loop for ambiguous plan references (stop and ask for clarification in step 5), and clear decision points for when to split commits vs. propose a single message. The gating section adds an additional checkpoint for context-file scope.

For a standalone skill with no bundle files, the content is well-organized into clearly labeled sections (Goal, Inputs, Output format, Procedure, Context-file guidance gating, Anti-patterns). Each section serves a distinct purpose and the content is appropriately scoped for a single SKILL.md without needing external references.

Lists multiple specific concrete actions: writing atomic commits, splitting work into coherent commits, and reviewing whether a commit is too broad. These are distinct, actionable capabilities.

Clearly answers both what ('Write atomic, repo-style git commits from a change summary or diff') and when ('Use when preparing commit messages, splitting work into coherent commits, or reviewing whether a commit is too broad').

Includes strong natural trigger terms users would say: 'git commits', 'commit messages', 'diff', 'change summary', 'splitting work', 'atomic'. These cover common variations of how users discuss commit-related tasks.

Clearly scoped to git commit authoring with specific triggers like 'atomic commits', 'splitting work into commits', and 'commit too broad'. Unlikely to conflict with general git skills or code review skills due to the narrow focus on commit message crafting.