Mako 11.0 or greater.
Install the package using the following composer command:
composer require mako/toolbar
Next, add the mako\toolbar\ToolbarPackage package to your app/config/application.php config file.
You should make sure that the middleware gets executed first to ensure that the toolbar is able to collect all the information about your application.
$dispatcher->setMiddlewarePriority(ToolbarMiddleware::class, 1);
You can now add the middleware to the routes of your choice or make it global if you want to apply it to all your routes.
$dispatcher->registerGlobalMiddleware(ToolbarMiddleware::class);
The middleware will only append the toolbar to responses with a content type of
text/htmland a body that includes a set of<body></body>tags.