Currently MediaWiki has a single $wgShellboxUrl, which only allows routing to one Shellbox. But we want to be able to run multiple Shellboxes dependening upon use case for better isolation, so we need to configure multiple:
$wgShellboxUrls = [ 'score' => '...', 'constraints' => '...' ];
Or if we want the secret key to be different across Shellboxes:
$wgShellboxes = [ 'score' => [ 'url' => '...', 'key' => '...' ], 'constraints' => [ 'url' => '...', 'key' => '...' ], ];
And each caller of Shellbox will need to ask for their specifically named Shellbox.