# install laravel 5.4
composer create-project --prefer-dist laravel/laravel yourProjectName "5.4.*"
# install debugbar 2.4 that compatible with laravel 5.4
composer require barryvdh/laravel-debugbar:~2.4
# install dingo/api
composer require dingo/api

<?php

namespace App\Http\Middleware;

use Closure;
use Dingo\Api\Http\Response;

class ProfileDingoHttpResponse
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        $response = $next($request);

        if ($response instanceof Response &&
            app()->bound('debugbar') &&
            app('debugbar')->isEnabled()
        ) {
            $queries_data = $this->sqlFilter(app('debugbar')->getData());
            $response->setContent(json_decode($response->morph()->getContent(), true) + [
                '_debugbar' => [
                    'total_queries' => count($queries_data),
                    'queries' => $queries_data,
                    'time' => app('debugbar')->getData()['time'],
                    'memory' => app('debugbar')->getData()['memory'],
                ],
            ]);
        }

        return $response;
    }

    /**
     * Get only sql and each duration
     *
     * @param $debugbar_data
     * @return array
     */
    protected function sqlFilter($debugbar_data)
    {
        $result = array_get($debugbar_data, 'queries.statements');

        return array_map(function ($item) {
            return [
                'sql' => array_get($item, 'sql'),
                'duration' => array_get($item, 'duration_str'),
            ];
        }, $result);
    }
}

<?php

namespace App\Http;

use Illuminate\Foundation\Http\Kernel as HttpKernel;

class Kernel extends HttpKernel
{
    ...

    protected $routeMiddleware = [
        ...
        'profile-dingo-http' => \App\Http\Middleware\ProfileDingoHttpResponse::class,
    ];
}

<?php
$api = app('Dingo\Api\Routing\Router');

$api->version('v1', ['middleware' => 'profile-dingo-http'], function ($api) {
    ...
});

"_debugbar": {
    "total_queries": 1,
    "queries": [
        {
            "sql": "select `id`, `name`, `description` from `product` where `id` = '2' limit 1",
            "duration": "14.01ms"
        }
    ],
    "time": {
        "start": 1561688591.7021,
        "end": 1561688591.8966,
        "duration": 0.19451189041138,
        "duration_str": "194.51ms",
        "measures": [
            {
                "label": "Booting",
                "start": 1561688591.7021,
                "relative_start": 0,
                "end": 1561688591.786,
                "relative_end": 1561688591.786,
                "duration": 0.083874940872192,
                "duration_str": "83.87ms",
                "params": [],
                "collector": null
            },
            {
                "label": "Application",
                "start": 1561688591.7738,
                "relative_start": 0.071721792221069,
                "end": 1561688591.8966,
                "relative_end": 0.0000050067901611328,
                "duration": 0.12279510498047,
                "duration_str": "122.8ms",
                "params": [],
                "collector": null
            }
        ]
    },
    "memory": {
        "peak_usage": 19660800,
        "peak_usage_str": "18.75MB"
    }
}