---
name: conventional-commit
description: Conventional Commits v1.0.0 standards for git messages. Use when (1) creating git commits, (2) writing or drafting commit messages, (3) reviewing commit message format, (4) explaining commit conventions, or (5) validating commit message compliance.
---

# Commit Authoring

Write commit messages following Conventional Commits v1.0.0.

## Message Structure

```
<type>[optional scope]: <description>

[optional body]

[optional footer(s)]
```

## Rules

1. Prefix with type, optional scope in parentheses, optional `!` for breaking changes, colon, space
2. `feat` for new features (MINOR in SemVer)
3. `fix` for bug fixes (PATCH in SemVer)
4. Description immediately follows the colon and space
5. Body separated by one blank line, free-form
6. Footers one blank line after body, token-separator-value format
7. Footer tokens use `-` instead of spaces (except `BREAKING CHANGE`)
8. `!` before `:` indicates breaking change; `BREAKING CHANGE:` footer may be omitted if `!` is used
9. Breaking changes correlate with MAJOR in SemVer

## Types

| Type | Purpose | SemVer |
|------|---------|--------|
| `feat` | New feature | MINOR |
| `fix` | Bug fix | PATCH |
| `docs` | Documentation only | - |
| `style` | Formatting, whitespace | - |
| `refactor` | Neither fix nor feature | - |
| `perf` | Performance improvement | - |
| `test` | Adding or updating tests | - |
| `build` | Build system or dependencies | - |
| `ci` | CI configuration | - |
| `chore` | Maintenance tasks | - |

## Description

Use imperative mood: "add feature" not "added feature". Keep under 50 characters. No period. Lowercase after type prefix.

## Body

Wrap at 72 characters. Explain what and why, not how.

## Prohibited

Do not include "Generated with Claude Code", AI attribution, Co-authored-by lines for AI, emoji, time estimates, dates, or TODO items.

## Examples

Simple:
```
docs: correct spelling of CHANGELOG
```

With scope:
```
feat(lang): add Polish language
```

Breaking change:
```
feat!: send email to customer when product ships

BREAKING CHANGE: customers now receive emails by default.
```

With body:
```
fix: prevent duplicate form submissions

Disables submit button after first click and adds
debounce to the handler.
```

With footer:
```
fix: resolve race condition in auth flow

Refs: #123
Reviewed-by: Alice
```