commit-message-writer

name	commit-message-writer
description	Generates conventional commit messages from staged git diffs. Activates when the user requests a commit message and produces type(scope) subject format.
author	Jeremy Longshore <[e-mail]>
version	1.0.0
license	MIT
allowed-tools	Bash(git:diff --staged)
compatibility	Designed for Claude Code 2.x
tags	["git","developer-tools"]
model	sonnet

Commit Message Writer

Generate a commit message for the currently staged changes.

Instructions

1. Read the staged diff using git diff --staged
2. Analyze the changes to determine:
   • The type (feat, fix, docs, refactor, test, chore, ci, style)
   • The scope (affected module or component)
   • A concise subject line (under 72 characters)
3. Output the commit message in conventional commit format

Format

type(scope): subject line

Optional body explaining the motivation for the change.

Examples

Input: A diff showing a new function added to auth.ts Output: feat(auth): add token refresh endpoint

Input: A diff fixing a typo in README.md Output: docs(readme): fix installation instructions typo