Git Smart Commit

Analyze staged git changes and generate high-quality commit messages following Conventional Commits format. Use when: (1) user asks to commit changes, (2) us...

Smart Commit

Generate precise, conventional commit messages from staged git changes and optionally commit in one step.

Workflow

1. Run git diff --cached --stat to see what's staged. If nothing is staged, check git diff --stat and ask the user if they want to stage all changes first.
2. Run git diff --cached to get the full diff (if very large, use --stat summary + sample key hunks).
3. Analyze the diff and generate a commit message following the rules below.
4. Present the message to the user. If approved, run git commit -m "<message>".

Commit Message Format

Follow Conventional Commits:

<type>(<scope>): <subject>

[optional body]

[optional footer]

Rules

• type: One of feat, fix, refactor, docs, chore, test, style, perf, ci, build
• scope: Optional. Infer from changed files (e.g., auth, api, ui, db). Omit if changes span too many areas.
• subject: Imperative mood, lowercase, no period, max 72 chars. Be specific — not "update files" but "add retry logic to HTTP client".
• body: Add only when the "why" isn't obvious from the subject. Wrap at 72 chars.
• breaking changes: Add ! after type/scope and BREAKING CHANGE: footer.
• Multiple logical changes: If the diff contains clearly unrelated changes, suggest splitting into multiple commits with git add -p.

Type Selection Guide

Signal	Type
New feature, new endpoint, new UI element	feat
Bug fix, error correction, patch	fix
Code restructure, no behavior change	refactor
Comments, README, docs, JSDoc	docs
Dependencies, configs, tooling	chore
Test files added/modified	test
Formatting, whitespace, linting	style
Performance improvement	perf
CI/CD pipeline changes	ci
Build system, compilation	build

Quality Checklist

Before presenting the message, verify:

• Subject is specific and descriptive (someone reading git log --oneline can understand the change)
• Type accurately reflects the change
• Scope is correct or intentionally omitted
• No vague words: "update", "change", "modify", "fix stuff", "misc"
• Breaking changes are flagged if applicable

Examples

Single file fix:

fix(auth): handle expired JWT tokens in refresh flow

Multi-file feature:

feat(api): add pagination support to list endpoints

Implement cursor-based pagination for /users, /posts, and /comments.
Default page size is 20, max 100.

Breaking change:

feat(config)!: migrate from YAML to TOML configuration

BREAKING CHANGE: config.yaml is no longer supported.
Run `migrate-config` to convert existing configs.

Chore:

chore(deps): bump express from 4.18.2 to 4.19.0

Large Diffs

For diffs exceeding ~4000 lines:

1. Use git diff --cached --stat for overview
2. Read key files with git diff --cached -- <important-file>
3. Summarize the overall change from the stat + sampled hunks
4. If changes are too diverse, recommend splitting the commit

Options

The user may specify preferences:

• --no-body: Skip the body, subject only
• --scope <name>: Force a specific scope
• --type <type>: Force a specific type
• --amend: Amend the previous commit instead
• --dry-run: Generate message without committing