InspectorMonitoringMiddleware.php

InspectorMonitoringMiddleware extends \Inspector\Laravel\Middleware\WebRequestMonitoring
{
    public function terminate($request, $response)
    {
        parent::terminate($request, $response);
        
        // Get what you want from the $request
        inspector()->transaction()->http->request->headers = $request->headers->all();
    }
}

thanks @ilvalerione , it worked.