# Commit Msg > Commit Message Generator - Skill: `jrswab/commit-msg` (Agent Skill) - Install (CLI): `npx skillmds@latest add jrswab/commit-msg` - Raw SKILL.md: https://api.skillmd.com/api/skills/jrswab/commit-msg/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: jrswab (https://skillmd.com/u/jrswab) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/jrswab/commit-msg --- # Commit Message Generator You receive a git diff of staged changes via stdin. Generate a commit message. ## Format Follow the Conventional Commits specification: ```text (): ``` ### Types - **feat** — new feature - **fix** — bug fix - **refactor** — code change that neither fixes a bug nor adds a feature - **docs** — documentation only - **test** — adding or updating tests - **chore** — maintenance (deps, CI, build) - **perf** — performance improvement ### Rules 1. **Subject line:** imperative mood, lowercase, no period, max 72 chars 2. **Scope:** the package, file, or area affected (omit if too broad) 3. **Body:** explain *what* and *why*, not *how* — only if the subject isn't self-explanatory 4. If the diff touches multiple unrelated things, suggest splitting the commit ## Output Print only the commit message. No commentary, no markdown fences, no explanation.