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Commitizen Documentation Site

Commitizen is a powerful release management tool that helps teams maintain consistent and meaningful commit messages while automating version management.

By enforcing standardized commit conventions (defaulting to Conventional Commits), Commitizen helps teams:

• Write clear, structured commit messages
• Automatically manage version numbers using semantic versioning
• Generate and maintain changelogs
• Streamline the release process

With just a simple cz bump command, Commitizen handles:

1. Version Management: Automatically bumps version numbers and updates version files based on your commit history
2. Changelog Generation: Creates and updates changelogs following the Keep a changelog format
3. Commit Standardization: Enforces consistent commit message formats across your team

This standardization makes your commit history more readable and meaningful, while the automation reduces manual work and potential errors in the release process.

• Interactive CLI for standardized commits with default Conventional Commits support
• Intelligent version bumping using Semantic Versioning
• Automatic keep a changelog generation
• Built-in commit validation with pre-commit hooks
• Customizable commit rules and templates
• Multi-format version file support
• Custom rules and plugins via pip

Before installing Commitizen, ensure you have:

• Python 3.10+
• Git 1.8.5.2+

The recommended way to install Commitizen is using pipx or uv, which ensures a clean, isolated installation:

Using pipx:

# Install Commitizen
pipx install commitizen

# Keep it updated
pipx upgrade commitizen

Using uv:

# Install commitizen
uv tool install commitizen

# Keep it updated
uv tool upgrade commitizen

(For macOS users) Using Homebrew:

brew install commitizen

You can add Commitizen to your Python project using any of these package managers:

Using pip:

pip install -U commitizen

Using conda:

conda install -c conda-forge commitizen

Using Poetry:

# For Poetry >= 1.2.0
poetry add commitizen --group dev

# For Poetry < 1.2.0
poetry add commitizen --dev

Using uv:

uv add --dev commitizen

Using pdm:

pdm add -d commitizen

To get started, run the cz init command. This will guide you through the process of creating a configuration file with your preferred settings.

Create standardized commits using:

cz commit
# or use the shortcut
cz c

To sign off your commits:

cz commit -- --signoff
# or use the shortcut
cz commit -- -s

For more commit options, run cz commit --help.

The most common command you'll use is:

cz bump

This command:

• Bumps your project's version
• Creates a git tag
• Updates the changelog (if update_changelog_on_bump is enabled)
• Updates version files

You can customize:

• Version files
• Version scheme
• Version provider

For all available options, see the bump command documentation.

# Get your project's version (instead of Commitizen's version)
cz version -p
# Preview changelog changes
cz changelog --dry-run "$(cz version -p)"

This command is particularly useful for automation scripts and CI/CD pipelines.

For example, you can use the output of the command cz changelog --dry-run "$(cz version -p)" to notify your team about a new release in Slack.

Commitizen can automatically validate your commit messages using pre-commit hooks.

1. Add to your .pre-commit-config.yaml:

---
repos:
  - repo: https://github.com/commitizen-tools/commitizen
    rev: master  # Replace with latest tag
    hooks:
      - id: commitizen
      - id: commitizen-branch
        stages: [pre-push]

2. Install the hooks:

prek install --hook-type commit-msg --hook-type pre-push

Note: Replace master with the latest tag to avoid warnings. You can automatically update this with:

prek autoupdate

For more details about commit validation, see the check command documentation.

Commitizen provides a comprehensive CLI with various commands. Here's the complete reference:

• Conventional Commits Specification
• Exit Codes Reference
• Configuration Guide
• Command Documentation

For each command, you can get detailed help by adding --help:

cz commit --help
cz bump --help
cz changelog --help

For more details, visit our documentation site.

Commitizen supports command-line completion through argcomplete, which is automatically installed as a dependency. This feature provides intelligent auto-completion for all Commitizen commands and options.

• Bash: Full support
• Zsh: Limited support
• Fish: Limited support
• Tcsh: Limited support

If you installed Commitizen globally (e.g., using pipx or brew), you can enable global completion:

# Enable global completion for all Python applications
sudo activate-global-python-argcomplete

For a user-specific installation that persists across sessions:

# Add to your shell's startup file (e.g., ~/.bashrc, ~/.zshrc)
register-python-argcomplete cz >> ~/.bashrc

For one-time activation in your current shell session:

# Activate completion for current session only
eval "$(register-python-argcomplete cz)"

After installation, you can verify the completion is working by:

1. Opening a new terminal session
2. Typing cz followed by a space and pressing TAB twice
3. You should see a list of available commands

For more detailed information about argcomplete configuration and troubleshooting, visit the argcomplete documentation.

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