This tool allows you to backup your CloudFlare DNS settings. It will back them up locally, and optionally push any changes to a git repository.
Install the dependencies with bundler: bundle install.
Then to use it, you'll need the email address and API token from your CloudFlare account:
bundle exec ./cloudflare-backup.rb EMAIL TOKEN OUTPUT_DIRECTORY
You can run this from a cron job to keep up-to-date.
If you want to track your changes, make the OUTPUT_DIRECTORY a git repository. Set up a git remote where changes should be pushed, and create an id_rsa in this directory so that the backup tool has access to your remote.