diff --git a/src/Configurator.php b/src/Configurator.php
index da957f0bd..a8e9da8b9 100644
--- a/src/Configurator.php
+++ b/src/Configurator.php
@@ -41,6 +41,7 @@ public function __construct(Composer $composer, IOInterface $io, Options $option
             'container' => Configurator\ContainerConfigurator::class,
             'makefile' => Configurator\MakefileConfigurator::class,
             'composer-scripts' => Configurator\ComposerScriptsConfigurator::class,
+            'composer-commands' => Configurator\ComposerCommandsConfigurator::class,
             'gitignore' => Configurator\GitignoreConfigurator::class,
             'dockerfile' => Configurator\DockerfileConfigurator::class,
             'docker-compose' => Configurator\DockerComposeConfigurator::class,
diff --git a/src/Configurator/ComposerCommandsConfigurator.php b/src/Configurator/ComposerCommandsConfigurator.php
new file mode 100644
index 000000000..c64165299
--- /dev/null
+++ b/src/Configurator/ComposerCommandsConfigurator.php
@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Flex\Configurator;
+
+use Composer\Factory;
+use Composer\Json\JsonFile;
+use Composer\Json\JsonManipulator;
+use Symfony\Flex\Lock;
+use Symfony\Flex\Recipe;
+use Symfony\Flex\Update\RecipeUpdate;
+
+/**
+ * @author Marcin Morawski <marcin@morawskim.pl>
+ */
+class ComposerCommandsConfigurator extends AbstractConfigurator
+{
+    public function configure(Recipe $recipe, $scripts, Lock $lock, array $options = [])
+    {
+        $json = new JsonFile(Factory::getComposerFile());
+
+        file_put_contents($json->getPath(), $this->configureScripts($scripts, $json));
+    }
+
+    public function unconfigure(Recipe $recipe, $scripts, Lock $lock)
+    {
+        $json = new JsonFile(Factory::getComposerFile());
+
+        $manipulator = new JsonManipulator(file_get_contents($json->getPath()));
+        foreach ($scripts as $key => $command) {
+            $manipulator->removeSubNode('scripts', $key);
+        }
+
+        file_put_contents($json->getPath(), $manipulator->getContents());
+    }
+
+    public function update(RecipeUpdate $recipeUpdate, array $originalConfig, array $newConfig): void
+    {
+        $json = new JsonFile(Factory::getComposerFile());
+        $jsonPath = ltrim(str_replace($recipeUpdate->getRootDir(), '', $json->getPath()), '/\\');
+
+        $recipeUpdate->setOriginalFile(
+            $jsonPath,
+            $this->configureScripts($originalConfig, $json)
+        );
+        $recipeUpdate->setNewFile(
+            $jsonPath,
+            $this->configureScripts($newConfig, $json)
+        );
+    }
+
+    private function configureScripts(array $scripts, JsonFile $json): string
+    {
+        $manipulator = new JsonManipulator(file_get_contents($json->getPath()));
+        foreach ($scripts as $cmdName => $script) {
+            $manipulator->addSubNode('scripts', $cmdName, $script);
+        }
+
+        return $manipulator->getContents();
+    }
+}
diff --git a/tests/Configurator/ComposerCommandConfiguratorTest.php b/tests/Configurator/ComposerCommandConfiguratorTest.php
new file mode 100644
index 000000000..d85a833e2
--- /dev/null
+++ b/tests/Configurator/ComposerCommandConfiguratorTest.php
@@ -0,0 +1,289 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Flex\Tests\Configurator;
+
+use Composer\Composer;
+use Composer\IO\IOInterface;
+use Composer\Util\Platform;
+use PHPUnit\Framework\TestCase;
+use Symfony\Flex\Configurator\ComposerCommandsConfigurator;
+use Symfony\Flex\Lock;
+use Symfony\Flex\Options;
+use Symfony\Flex\Recipe;
+use Symfony\Flex\Update\RecipeUpdate;
+
+class ComposerCommandConfiguratorTest extends TestCase
+{
+    protected function setUp(): void
+    {
+        @mkdir(FLEX_TEST_DIR);
+        if (method_exists(Platform::class, 'putEnv')) {
+            Platform::putEnv('COMPOSER', FLEX_TEST_DIR.'/composer.json');
+        } else {
+            putenv('COMPOSER='.FLEX_TEST_DIR.'/composer.json');
+        }
+    }
+
+    protected function tearDown(): void
+    {
+        @unlink(FLEX_TEST_DIR.'/composer.json');
+        @rmdir(FLEX_TEST_DIR);
+        if (method_exists(Platform::class, 'clearEnv')) {
+            Platform::clearEnv('COMPOSER');
+        } else {
+            putenv('COMPOSER');
+        }
+    }
+
+    public function providerForConfigureMethod(): iterable
+    {
+        yield 'without_scripts_block' => [
+            new \stdClass(),
+            <<<EOF
+{
+    "scripts": {
+        "do:cool-stuff": "symfony-cmd"
+    }
+}
+
+EOF
+        ];
+
+        yield 'with_existing_command' => [
+            [
+                'scripts' => [
+                    'foo' => 'bar',
+                ],
+            ],
+            <<<EOF
+{
+    "scripts": {
+        "foo": "bar",
+        "do:cool-stuff": "symfony-cmd"
+    }
+}
+
+EOF
+        ];
+
+        yield 'with_existing_auto_scripts' => [
+            [
+                'scripts' => [
+                    'auto-scripts' => [
+                        'cache:clear' => 'symfony-cmd',
+                        'assets:install %PUBLIC_DIR%' => 'symfony-cmd',
+                    ],
+                    'post-install-cmd' => ['@auto-scripts'],
+                    'post-update-cmd' => ['@auto-scripts'],
+                ],
+            ],
+            <<<EOF
+{
+    "scripts": {
+        "auto-scripts": {
+            "cache:clear": "symfony-cmd",
+            "assets:install %PUBLIC_DIR%": "symfony-cmd"
+        },
+        "post-install-cmd": [
+            "@auto-scripts"
+        ],
+        "post-update-cmd": [
+            "@auto-scripts"
+        ],
+        "do:cool-stuff": "symfony-cmd"
+    }
+}
+
+EOF
+        ];
+    }
+
+    /**
+     * @dataProvider providerForConfigureMethod
+     */
+    public function testConfigure($composerSchema, string $expectedComposerJson): void
+    {
+        file_put_contents(FLEX_TEST_DIR.'/composer.json', json_encode($composerSchema, \JSON_PRETTY_PRINT));
+
+        $configurator = new ComposerCommandsConfigurator(
+            $this->createMock(Composer::class),
+            $this->createMock(IOInterface::class),
+            new Options(['root-dir' => FLEX_TEST_DIR])
+        );
+
+        $recipe = $this->getMockBuilder(Recipe::class)->disableOriginalConstructor()->getMock();
+        $lock = $this->getMockBuilder(Lock::class)->disableOriginalConstructor()->getMock();
+
+        $configurator->configure($recipe, [
+            'do:cool-stuff' => 'symfony-cmd',
+        ], $lock);
+        $this->assertEquals(
+            $expectedComposerJson,
+            file_get_contents(FLEX_TEST_DIR.'/composer.json')
+        );
+    }
+
+    public function providerForUnconfigureMethod(): iterable
+    {
+        yield 'unconfigure_one_command_with_auto_scripts' => [
+            [
+                'scripts' => [
+                    'auto-scripts' => [
+                        'cache:clear' => 'symfony-cmd',
+                        'assets:install %PUBLIC_DIR%' => 'symfony-cmd',
+                    ],
+                    'post-install-cmd' => ['@auto-scripts'],
+                    'post-update-cmd' => ['@auto-scripts'],
+                    'do:cool-stuff' => 'symfony-cmd',
+                    'do:another-cool-stuff' => 'symfony-cmd-2',
+                ],
+            ],
+            <<<EOF
+{
+    "scripts": {
+        "auto-scripts": {
+            "cache:clear": "symfony-cmd",
+            "assets:install %PUBLIC_DIR%": "symfony-cmd"
+        },
+        "post-install-cmd": [
+            "@auto-scripts"
+        ],
+        "post-update-cmd": [
+            "@auto-scripts"
+        ],
+        "do:another-cool-stuff": "symfony-cmd-2"
+    }
+}
+
+EOF
+        ];
+
+        yield 'unconfigure_command' => [
+            [
+                'scripts' => [
+                    'do:another-cool-stuff' => 'symfony-cmd-2',
+                    'do:cool-stuff' => 'symfony-cmd',
+                ],
+            ],
+            <<<EOF
+{
+    "scripts": {
+        "do:another-cool-stuff": "symfony-cmd-2"
+    }
+}
+
+EOF
+        ];
+    }
+
+    /**
+     * @dataProvider providerForUnconfigureMethod
+     */
+    public function testUnconfigure($composerSchema, string $expectedComposerJson): void
+    {
+        file_put_contents(FLEX_TEST_DIR.'/composer.json', json_encode($composerSchema, \JSON_PRETTY_PRINT));
+
+        $configurator = new ComposerCommandsConfigurator(
+            $this->createMock(Composer::class),
+            $this->createMock(IOInterface::class),
+            new Options(['root-dir' => FLEX_TEST_DIR])
+        );
+
+        $recipe = $this->createMock(Recipe::class);
+        $lock = $this->createMock(Lock::class);
+
+        $configurator->unconfigure($recipe, [
+            'do:cool-stuff' => 'symfony-cmd',
+        ], $lock);
+        $this->assertEquals(
+            $expectedComposerJson,
+            file_get_contents(FLEX_TEST_DIR.'/composer.json')
+        );
+    }
+
+    public function testUpdate(): void
+    {
+        $configurator = new ComposerCommandsConfigurator(
+            $this->createMock(Composer::class),
+            $this->createMock(IOInterface::class),
+            new Options(['root-dir' => FLEX_TEST_DIR])
+        );
+
+        $recipeUpdate = new RecipeUpdate(
+            $this->createMock(Recipe::class),
+            $this->createMock(Recipe::class),
+            $this->createMock(Lock::class),
+            FLEX_TEST_DIR
+        );
+
+        file_put_contents(FLEX_TEST_DIR.'/composer.json', json_encode([
+            'scripts' => [
+                'auto-scripts' => [
+                    'cache:clear' => 'symfony-cmd',
+                    'assets:install %PUBLIC_DIR%' => 'symfony-cmd',
+                ],
+                'post-install-cmd' => ['@auto-scripts'],
+                'post-update-cmd' => ['@auto-scripts'],
+                'foo' => 'bar',
+            ],
+        ], \JSON_PRETTY_PRINT));
+
+        $configurator->update(
+            $recipeUpdate,
+            ['foo' => 'bar'],
+            ['foo' => 'baz', 'do:cool-stuff' => 'symfony-cmd']
+        );
+
+        $expectedComposerJsonOriginal = <<<EOF
+{
+    "scripts": {
+        "auto-scripts": {
+            "cache:clear": "symfony-cmd",
+            "assets:install %PUBLIC_DIR%": "symfony-cmd"
+        },
+        "post-install-cmd": [
+            "@auto-scripts"
+        ],
+        "post-update-cmd": [
+            "@auto-scripts"
+        ],
+        "foo": "bar"
+    }
+}
+
+EOF
+        ;
+        $this->assertSame(['composer.json' => $expectedComposerJsonOriginal], $recipeUpdate->getOriginalFiles());
+
+        $expectedComposerJsonNew = <<<EOF
+{
+    "scripts": {
+        "auto-scripts": {
+            "cache:clear": "symfony-cmd",
+            "assets:install %PUBLIC_DIR%": "symfony-cmd"
+        },
+        "post-install-cmd": [
+            "@auto-scripts"
+        ],
+        "post-update-cmd": [
+            "@auto-scripts"
+        ],
+        "foo": "baz",
+        "do:cool-stuff": "symfony-cmd"
+    }
+}
+
+EOF
+        ;
+        $this->assertSame(['composer.json' => $expectedComposerJsonNew], $recipeUpdate->getNewFiles());
+    }
+}