changelog-gen

Changelog Generator

Writing changelogs by hand is tedious. This tool reads your git history between two refs and generates a properly categorized changelog entry. No more copy-pasting commit messages.

One command. Zero config. Just works.

Quick Start

npx ai-changelog --from v1.0.0 --to v2.0.0

What It Does

• Reads git log between any two refs (tags, branches, commits)
• Groups commits into Added, Changed, Fixed, Removed
• Cleans up messy commit messages into readable entries
• Outputs markdown ready for your CHANGELOG.md

Usage Examples

# Between two tags
npx ai-changelog --from v1.0.0 --to v2.0.0

# From a tag to HEAD
npx ai-changelog --from v1.0.0 --to HEAD

# Write directly to file
npx ai-changelog --from v1.0.0 --to v2.0.0 -o CHANGELOG.md

# Specific commit range
npx ai-changelog --from abc123 --to def456

Best Practices

• Tag your releases - makes generating changelogs way easier
• Write decent commits - garbage in, garbage out
• Review the output - AI might miscategorize some changes
• Run before release - make it part of your release checklist

When to Use This

• Preparing a release and need changelog entries
• You forgot to maintain the changelog and need to catch up
• Want consistent changelog formatting across releases
• Generating release notes for GitHub releases

Part of the LXGIC Dev Toolkit

This is one of 110+ free developer tools built by LXGIC Studios. No paywalls, no sign-ups, no API keys on free tiers. Just tools that work.

Find more:

• GitHub: https://github.com/LXGIC-Studios
• Twitter: https://x.com/lxgicstudios
• Substack: https://lxgicstudios.substack.com
• Website: https://lxgicstudios.com

Requirements

No install needed. Just run with npx. Node.js 18+ recommended. Needs OPENAI_API_KEY environment variable.

npx ai-changelog --help

How It Works

Runs git log between your specified refs, collects all commit messages, and sends them to GPT-4o-mini. The AI parses the commits, understands what each change does, and formats them into proper Keep a Changelog style with appropriate categories.

License

MIT. Free forever. Use it however you want.

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Built by LXGIC Studios

• GitHub: github.com/lxgicstudios/ai-changelog
• Twitter: @lxgicstudios