Install
This is the repository archive. It installs, but the folder name will carry the branch suffix and updates will not flow.
Install straight from GitHub with WP-CLI:
wp plugin install https://github.com/akirk/blueprint-extractor/archive/refs/heads/main.zipNo built-in updater. New versions won't appear under Dashboard → Updates. Install new releases yourself, or let Git Updater track the repository.
This plugin assists you in creating a WordPress Playground Blueprint for the current site. It provide a wp-admin page that allows selecting a subselection of important entities of the current site:

Try it in WordPress Playground or build on it via the Step Library
Development
Use the Playground CLI to run the plugin in your local environment.
npx @wp-playground/cli@latest server --mount=.:/wordpress/wp-content/plugins/blueprint-extractor --login --blueprint=blueprint.json
Open the Playground URL in your browser to see the plugin admin page.