diff --git a/.gitignore b/.gitignore
index 6dd1518..b69d32d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,6 +27,7 @@ composer.phar
 /phpunit.phar
 /phpunit.xml
 /.phpunit.cache
+.phpunit.result.cache
 
 # Static analysis
 analysis.txt
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90988b4..ffcb69a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - Enh #353: Add shortcut for tag reference #333 (@xepozz)
 - Enh #356: Improve usage `NotFoundException` for cases with definitions (@vjik)
 - Enh #364: Minor refactoring to improve performance of container (@samdark)
+- New #372: Add `debug:container` console command (@samdark, @xepozz)
 - Enh #375: Raise minimum PHP version to `^8.1` and refactor code (@vjik)
 
 ## 1.2.1 December 23, 2022
diff --git a/README.md b/README.md
index e4b54db..6172776 100644
--- a/README.md
+++ b/README.md
@@ -492,6 +492,11 @@ $config = ContainerConfig::create()
 $container = new Container($config);
 ```
 
+## Configuration debugging
+
+If you use the package with Yii3, `./yii debug:container` command is available.
+It shows information about container.
+
 ## Documentation
 
 - [Internals](docs/internals.md)
diff --git a/composer.json b/composer.json
index 5d7a32c..ccb9cbe 100644
--- a/composer.json
+++ b/composer.json
@@ -47,11 +47,14 @@
         "spatie/phpunit-watcher": "^1.23",
         "vimeo/psalm": "^5.26",
         "yiisoft/injector": "^1.0",
-        "yiisoft/test-support": "^3.0"
+        "yiisoft/test-support": "^3.0",
+        "yiisoft/config": "^1.3",
+        "yiisoft/var-dumper": "^1.7",
+        "symfony/console": "^5.4|^6.0|^7.0"
     },
     "suggest": {
-        "yiisoft/injector": "^1.0",
-        "phpbench/phpbench": "To run benchmarks."
+        "symfony/console": "For debug:container command",
+        "yiisoft/var-dumper": "For debug:container command"
     },
     "provide": {
         "psr/container-implementation": "1.0.0"
@@ -66,6 +69,14 @@
             "Yiisoft\\Di\\Tests\\": "tests"
         }
     },
+    "extra": {
+        "config-plugin-options": {
+            "source-directory": "config"
+        },
+        "config-plugin": {
+            "params": "params.php"
+        }
+    },
     "scripts": {
         "test": "phpunit --testdox --no-interaction",
         "test-watch": "phpunit-watcher watch"
@@ -77,7 +88,8 @@
         "sort-packages": true,
         "allow-plugins": {
             "infection/extension-installer": true,
-            "composer/package-versions-deprecated": true
+            "composer/package-versions-deprecated": true,
+            "yiisoft/config": false
         }
     }
 }
diff --git a/config/params.php b/config/params.php
new file mode 100644
index 0000000..549a0e9
--- /dev/null
+++ b/config/params.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+use Yiisoft\Di\Command\DebugContainerCommand;
+
+return [
+    'yiisoft/yii-debug' => [
+        'ignoredCommands' => [
+            'debug:container',
+        ],
+    ],
+    'yiisoft/yii-console' => [
+        'commands' => [
+            'debug:container' => DebugContainerCommand::class,
+        ],
+    ],
+];
diff --git a/src/Command/DebugContainerCommand.php b/src/Command/DebugContainerCommand.php
new file mode 100644
index 0000000..8682803
--- /dev/null
+++ b/src/Command/DebugContainerCommand.php
@@ -0,0 +1,190 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Di\Command;
+
+use Psr\Container\ContainerInterface;
+use ReflectionClass;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Helper\Table;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Yiisoft\Config\ConfigInterface;
+use Yiisoft\Definitions\ArrayDefinition;
+use Yiisoft\Definitions\CallableDefinition;
+use Yiisoft\Definitions\ValueDefinition;
+use Yiisoft\Di\Helpers\DefinitionNormalizer;
+use Yiisoft\VarDumper\VarDumper;
+
+#[AsCommand(
+    name: 'debug:container',
+    description: 'Show information about container',
+)]
+final class DebugContainerCommand extends Command
+{
+    public function __construct(
+        private readonly ContainerInterface $container,
+    ) {
+        parent::__construct();
+    }
+
+    protected function configure(): void
+    {
+        $this
+            ->addArgument('id', InputArgument::IS_ARRAY, 'Service ID')
+            ->addOption('groups', null, InputOption::VALUE_NONE, 'Show groups')
+            ->addOption('group', 'g', InputOption::VALUE_REQUIRED, 'Show group');
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $config = $this->container->get(ConfigInterface::class);
+
+        $io = new SymfonyStyle($input, $output);
+
+        if ($input->hasArgument('id') && !empty($ids = $input->getArgument('id'))) {
+            $build = $this->getConfigBuild($config);
+            foreach ($ids as $id) {
+                $definition = null;
+                foreach ($build as $definitions) {
+                    if (array_key_exists($id, $definitions)) {
+                        $definition = $definitions[$id];
+                    }
+                }
+                if ($definition === null) {
+                    $io->error(
+                        sprintf(
+                            'Service "%s" not found.',
+                            $id,
+                        )
+                    );
+                    continue;
+                }
+                $io->title($id);
+
+                $normalizedDefinition = DefinitionNormalizer::normalize($definition, $id);
+                if ($normalizedDefinition instanceof ArrayDefinition) {
+                    $definitionList = ['ID' => $id];
+                    if (class_exists($normalizedDefinition->getClass())) {
+                        $definitionList[] = ['Class' => $normalizedDefinition->getClass()];
+                    }
+                    if (!empty($normalizedDefinition->getConstructorArguments())) {
+                        $definitionList[] = [
+                            'Constructor' => $this->export(
+                                $normalizedDefinition->getConstructorArguments()
+                            ),
+                        ];
+                    }
+                    if (!empty($normalizedDefinition->getMethodsAndProperties())) {
+                        $definitionList[] = [
+                            'Methods' => $this->export(
+                                $normalizedDefinition->getMethodsAndProperties()
+                            ),
+                        ];
+                    }
+                    if (isset($definition['tags'])) {
+                        $definitionList[] = ['Tags' => $this->export($definition['tags'])];
+                    }
+
+                    $io->definitionList(...$definitionList);
+
+                    continue;
+                }
+                if ($normalizedDefinition instanceof CallableDefinition || $normalizedDefinition instanceof ValueDefinition) {
+                    $io->text(
+                        $this->export($definition)
+                    );
+                    continue;
+                }
+
+                $output->writeln([
+                    $id,
+                    VarDumper::create($normalizedDefinition)->asString(),
+                ]);
+            }
+
+            return self::SUCCESS;
+        }
+
+        if ($input->hasOption('groups') && $input->getOption('groups')) {
+            $build = $this->getConfigBuild($config);
+            $groups = array_keys($build);
+            sort($groups);
+
+            $io->table(['Groups'], array_map(static fn ($group) => [$group], $groups));
+
+            return self::SUCCESS;
+        }
+        if ($input->hasOption('group') && !empty($group = $input->getOption('group'))) {
+            $data = $config->get($group);
+            ksort($data);
+
+            $rows = $this->getGroupServices($data);
+
+            $table = new Table($output);
+            $table
+                ->setHeaderTitle($group)
+                ->setHeaders(['Service', 'Definition'])
+                ->setRows($rows);
+            $table->render();
+
+            return self::SUCCESS;
+        }
+
+        $build = $this->getConfigBuild($config);
+
+        foreach ($build as $group => $data) {
+            $rows = $this->getGroupServices($data);
+
+            $table = new Table($output);
+            $table
+                ->setHeaderTitle($group)
+                ->setHeaders(['Group', 'Services'])
+                ->setRows($rows);
+            $table->render();
+        }
+
+        return self::SUCCESS;
+    }
+
+    private function getConfigBuild(mixed $config): array
+    {
+        $reflection = new ReflectionClass($config);
+        $buildReflection = $reflection->getProperty('build');
+        $buildReflection->setAccessible(true);
+        return $buildReflection->getValue($config);
+    }
+
+    protected function getGroupServices(array $data): array
+    {
+        $rows = [];
+        foreach ($data as $id => $definition) {
+            $class = '';
+            if (is_string($definition)) {
+                $class = $definition;
+            }
+            if (is_array($definition)) {
+                $class = $definition['class'] ?? $id;
+            }
+            if (is_object($definition)) {
+                $class = $definition::class;
+            }
+
+            $rows[] = [
+                $id,
+                $class,
+            ];
+        }
+        return $rows;
+    }
+
+    protected function export(mixed $value): string
+    {
+        return VarDumper::create($value)->asString();
+    }
+}
diff --git a/tests/Unit/Command/DebugContainerCommandTest.php b/tests/Unit/Command/DebugContainerCommandTest.php
new file mode 100644
index 0000000..bcad82c
--- /dev/null
+++ b/tests/Unit/Command/DebugContainerCommandTest.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Di\Tests\Unit\Command;
+
+use PHPUnit\Framework\TestCase;
+use Psr\Container\ContainerInterface;
+use Psr\Log\LoggerInterface;
+use Psr\Log\NullLogger;
+use Symfony\Component\Console\Tester\CommandTester;
+use Yiisoft\Config\Config;
+use Yiisoft\Config\ConfigInterface;
+use Yiisoft\Config\ConfigPaths;
+use Yiisoft\Di\Command\DebugContainerCommand;
+use Yiisoft\Di\Container;
+use Yiisoft\Di\ContainerConfig;
+
+final class DebugContainerCommandTest extends TestCase
+{
+    public function testCommand(): void
+    {
+        $container = $this->createContainer();
+        $config = $container->get(ConfigInterface::class);
+        // trigger config build
+        $config->get('params');
+
+        $command = new DebugContainerCommand($container);
+        $commandTester = new CommandTester($command);
+
+        $commandTester->execute([]);
+
+        $this->assertEquals(0, $commandTester->getStatusCode());
+    }
+
+    private function createContainer(): ContainerInterface
+    {
+        $config = ContainerConfig::create()
+            ->withDefinitions([
+                LoggerInterface::class => NullLogger::class,
+                ConfigInterface::class => [
+                    'class' => Config::class,
+                    '__construct()' => [
+                        new ConfigPaths(__DIR__ . '/config'),
+                    ],
+                ],
+            ]);
+        return new Container($config);
+    }
+}
diff --git a/tests/Unit/Command/config/.merge-plan.php b/tests/Unit/Command/config/.merge-plan.php
new file mode 100644
index 0000000..f60be99
--- /dev/null
+++ b/tests/Unit/Command/config/.merge-plan.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    '/'=>[
+        'params' => [
+
+        ]
+    ],
+];
diff --git a/tests/Unit/Command/config/param1.php b/tests/Unit/Command/config/param1.php
new file mode 100644
index 0000000..c9d9563
--- /dev/null
+++ b/tests/Unit/Command/config/param1.php
@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+return [
+    '/' => [
+        'params' => [
+            'yiitest/yii-debug' => [
+                'param1.php',
+            ],
+        ],
+    ],
+];