Blackfire (https://blackfire.io) is a PHP performance management & monitoring solution - currently to install with Plesk requires adding specific PHP directives for each domain, and setting up with different PHP versions as well. Would be nice if this could all be integrated in front-end to enable it per domain simply.
It appears that the platform requested for integration has not yet reached the popularity required for integrating it into the Plesk product. For that reason we must decline the request. However, you can suggest to Blackfire that they develop a Plesk extension using the free Plesk API so that their services integrate with Plesk.
This would be great!