We’ve renamed WP Composer to WP Packages
Read the announcement for what changed, what stays the same, and how to update your Composer repository URL:
If you’re currently using repo.wp-composer.com, please migrate to repo.wp-packages.org
Here’s a one-liner to update any repos you’d already migrated to WP Composer:
composer config --unset repositories.wp-composer && composer config repositories.wp-packages --json '{"type":"composer","url":"https://repo.wp-packages.org"}'