diff --git a/README.md b/README.md
index 6b3289f..8b3d753 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ Exemple : un mapping `mcp/graylog/install.sh` peut servir le fichier `install.sh
 ## Fonctionnement
 
 - `/admin` affiche l’écran de connexion puis l’interface de gestion.
+- `/` redirige vers l’URL configurée dans `/admin/settings`, ou vers `/admin` si aucune URL n’est configurée.
 - Un mapping lie un chemin public `.sh` à une URL Git, une référence Git et un chemin de fichier dans le dépôt.
 - Le bouton `Synchroniser` clone ou met à jour le dépôt, extrait la référence demandée et copie le fichier dans le cache.
 - Les chemins publics hors `/admin` servent uniquement les scripts déjà synchronisés.
@@ -54,11 +55,12 @@ docker compose -f compose.yaml -f compose.dev.yaml run --rm -e APP_ENV=test app
 ## Servir un script
 
 1. Se connecter sur `/admin`.
-2. Créer un mapping :
+2. Optionnel : configurer l’URL de redirection de `/` via `Configuration`.
+3. Créer un mapping :
    - Chemin public : `mcp/graylog/install.sh`
    - Dépôt : `https://forge.lclr.dev/AI/graylog-mcp.git`
    - Réf. : `main`
    - Fichier : `install.sh`
    - Token : optionnel, pour dépôt privé
-3. Cliquer sur `Synchroniser`.
-4. Appeler `http://localhost:8080/mcp/graylog/install.sh`.
+4. Cliquer sur `Synchroniser`.
+5. Appeler `http://localhost:8080/mcp/graylog/install.sh`.
diff --git a/migrations/Version20260505081600.php b/migrations/Version20260505081600.php
new file mode 100644
index 0000000..6b805b2
--- /dev/null
+++ b/migrations/Version20260505081600.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20260505081600 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Create application settings.';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('CREATE TABLE app_setting (id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, name VARCHAR(190) NOT NULL, value CLOB DEFAULT NULL, created_at DATETIME NOT NULL, updated_at DATETIME NOT NULL)');
+        $this->addSql('CREATE UNIQUE INDEX uniq_app_setting_name ON app_setting (name)');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('DROP TABLE app_setting');
+    }
+}
diff --git a/src/Controller/Admin/SettingsController.php b/src/Controller/Admin/SettingsController.php
new file mode 100644
index 0000000..7aecbfb
--- /dev/null
+++ b/src/Controller/Admin/SettingsController.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Controller\Admin;
+
+use App\Form\SettingsType;
+use App\Service\AppSettings;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
+
+final class SettingsController extends AbstractController
+{
+    #[Route('/admin/settings', name: 'admin_settings', methods: ['GET', 'POST'])]
+    public function __invoke(Request $request, AppSettings $settings, EntityManagerInterface $entityManager): Response
+    {
+        $form = $this->createForm(SettingsType::class, [
+            'rootRedirectUrl' => $settings->rootRedirectUrl(),
+        ]);
+        $form->handleRequest($request);
+
+        if ($form->isSubmitted() && $form->isValid()) {
+            $data = $form->getData();
+            $settings->setRootRedirectUrl($data['rootRedirectUrl'] ?? null);
+            $entityManager->flush();
+
+            $this->addFlash('success', 'Configuration mise à jour.');
+
+            return $this->redirectToRoute('admin_dashboard');
+        }
+
+        return $this->render('admin/settings.html.twig', [
+            'form' => $form,
+        ], new Response(status: $form->isSubmitted() ? Response::HTTP_UNPROCESSABLE_ENTITY : Response::HTTP_OK));
+    }
+}
diff --git a/src/Controller/HomeController.php b/src/Controller/HomeController.php
new file mode 100644
index 0000000..6fdf7b0
--- /dev/null
+++ b/src/Controller/HomeController.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Controller;
+
+use App\Service\AppSettings;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\Routing\Attribute\Route;
+
+final class HomeController extends AbstractController
+{
+    #[Route('/', name: 'home', methods: ['GET'])]
+    public function __invoke(AppSettings $settings): RedirectResponse
+    {
+        $redirectUrl = $settings->rootRedirectUrl();
+        if ($redirectUrl !== null) {
+            return new RedirectResponse($redirectUrl);
+        }
+
+        return $this->redirectToRoute('admin_dashboard');
+    }
+}
diff --git a/src/Entity/AppSetting.php b/src/Entity/AppSetting.php
new file mode 100644
index 0000000..719403f
--- /dev/null
+++ b/src/Entity/AppSetting.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace App\Entity;
+
+use App\Repository\AppSettingRepository;
+use DateTimeImmutable;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\ORM\Mapping as ORM;
+
+#[ORM\Entity(repositoryClass: AppSettingRepository::class)]
+#[ORM\HasLifecycleCallbacks]
+#[ORM\UniqueConstraint(name: 'uniq_app_setting_name', columns: ['name'])]
+class AppSetting
+{
+    public const ROOT_REDIRECT_URL = 'root_redirect_url';
+
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    private ?int $id = null;
+
+    #[ORM\Column(length: 190)]
+    private string $name = '';
+
+    #[ORM\Column(type: Types::TEXT, nullable: true)]
+    private ?string $value = null;
+
+    #[ORM\Column(type: Types::DATETIME_IMMUTABLE)]
+    private ?DateTimeImmutable $createdAt = null;
+
+    #[ORM\Column(type: Types::DATETIME_IMMUTABLE)]
+    private ?DateTimeImmutable $updatedAt = null;
+
+    public function getId(): ?int
+    {
+        return $this->id;
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function setName(string $name): self
+    {
+        $this->name = trim($name);
+
+        return $this;
+    }
+
+    public function getValue(): ?string
+    {
+        return $this->value;
+    }
+
+    public function setValue(?string $value): self
+    {
+        $value = $value === null ? null : trim($value);
+        $this->value = $value === '' ? null : $value;
+
+        return $this;
+    }
+
+    public function getCreatedAt(): ?DateTimeImmutable
+    {
+        return $this->createdAt;
+    }
+
+    public function getUpdatedAt(): ?DateTimeImmutable
+    {
+        return $this->updatedAt;
+    }
+
+    #[ORM\PrePersist]
+    public function initializeTimestamps(): void
+    {
+        $now = new DateTimeImmutable();
+        $this->createdAt ??= $now;
+        $this->updatedAt ??= $now;
+    }
+
+    #[ORM\PreUpdate]
+    public function refreshUpdatedAt(): void
+    {
+        $this->updatedAt = new DateTimeImmutable();
+    }
+}
diff --git a/src/Form/SettingsType.php b/src/Form/SettingsType.php
new file mode 100644
index 0000000..55ae832
--- /dev/null
+++ b/src/Form/SettingsType.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Form;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\UrlType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Component\Validator\Constraints\Url;
+
+final class SettingsType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder->add('rootRedirectUrl', UrlType::class, [
+            'default_protocol' => null,
+            'required' => false,
+            'constraints' => [
+                new Url(
+                    protocols: ['http', 'https'],
+                    requireTld: false,
+                    message: 'L’URL de redirection doit être une URL http ou https.'
+                ),
+            ],
+        ]);
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'data_class' => null,
+        ]);
+    }
+}
diff --git a/src/Repository/AppSettingRepository.php b/src/Repository/AppSettingRepository.php
new file mode 100644
index 0000000..6c94d54
--- /dev/null
+++ b/src/Repository/AppSettingRepository.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Repository;
+
+use App\Entity\AppSetting;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+final class AppSettingRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, AppSetting::class);
+    }
+
+    public function getValue(string $name): ?string
+    {
+        return $this->findOneBy(['name' => $name])?->getValue();
+    }
+
+    public function setValue(string $name, ?string $value): AppSetting
+    {
+        $setting = $this->findOneBy(['name' => $name]) ?? (new AppSetting())->setName($name);
+        $setting->setValue($value);
+
+        $this->getEntityManager()->persist($setting);
+
+        return $setting;
+    }
+}
diff --git a/src/Service/AppSettings.php b/src/Service/AppSettings.php
new file mode 100644
index 0000000..6ec034a
--- /dev/null
+++ b/src/Service/AppSettings.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Service;
+
+use App\Entity\AppSetting;
+use App\Repository\AppSettingRepository;
+
+final class AppSettings
+{
+    public function __construct(private readonly AppSettingRepository $settings)
+    {
+    }
+
+    public function rootRedirectUrl(): ?string
+    {
+        return $this->settings->getValue(AppSetting::ROOT_REDIRECT_URL);
+    }
+
+    public function setRootRedirectUrl(?string $url): void
+    {
+        $this->settings->setValue(AppSetting::ROOT_REDIRECT_URL, $url);
+    }
+}
diff --git a/templates/admin/dashboard.html.twig b/templates/admin/dashboard.html.twig
index fed1a70..13ede38 100644
--- a/templates/admin/dashboard.html.twig
+++ b/templates/admin/dashboard.html.twig
@@ -5,7 +5,10 @@
 {% block body %}
     <main>
         <h1>Mappings</h1>
-        <p><a href="{{ path('admin_mapping_new') }}">Nouveau mapping</a></p>
+        <p>
+            <a href="{{ path('admin_mapping_new') }}">Nouveau mapping</a>
+            <a href="{{ path('admin_settings') }}">Configuration</a>
+        </p>
 
         {% for message in app.flashes('success') %}
             <p>{{ message }}</p>
diff --git a/templates/admin/settings.html.twig b/templates/admin/settings.html.twig
new file mode 100644
index 0000000..1954592
--- /dev/null
+++ b/templates/admin/settings.html.twig
@@ -0,0 +1,17 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}Configuration{% endblock %}
+
+{% block body %}
+    <main>
+        <h1>Configuration</h1>
+
+        {{ form_start(form) }}
+            {{ form_row(form.rootRedirectUrl, {
+                label: 'URL de redirection de /',
+                help: 'Laisser vide pour rediriger vers /admin.'
+            }) }}
+            <button type="submit">Enregistrer</button>
+        {{ form_end(form) }}
+    </main>
+{% endblock %}
diff --git a/tests/Controller/Admin/SettingsControllerTest.php b/tests/Controller/Admin/SettingsControllerTest.php
new file mode 100644
index 0000000..7d7be8a
--- /dev/null
+++ b/tests/Controller/Admin/SettingsControllerTest.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace App\Tests\Controller\Admin;
+
+use App\Entity\AppSetting;
+use App\Entity\User;
+use App\Tests\DatabaseWebTestCase;
+
+final class SettingsControllerTest extends DatabaseWebTestCase
+{
+    public function testSettingsRequireAuthentication(): void
+    {
+        $this->client->request('GET', '/admin/settings');
+
+        self::assertResponseRedirects('/admin/login');
+    }
+
+    public function testAdminCanUpdateRootRedirectUrl(): void
+    {
+        $this->loginAsAdmin();
+
+        $crawler = $this->client->request('GET', '/admin/settings');
+        $form = $crawler->selectButton('Enregistrer')->form([
+            'settings[rootRedirectUrl]' => 'https://example.com/installers',
+        ]);
+
+        $this->client->submit($form);
+
+        self::assertResponseRedirects('/admin');
+
+        self::assertSame(
+            'https://example.com/installers',
+            $this->entityManager->getRepository(AppSetting::class)->getValue(AppSetting::ROOT_REDIRECT_URL)
+        );
+    }
+
+    public function testRootRedirectUrlMustBeHttpOrHttps(): void
+    {
+        $this->loginAsAdmin();
+
+        $crawler = $this->client->request('GET', '/admin/settings');
+        $form = $crawler->selectButton('Enregistrer')->form([
+            'settings[rootRedirectUrl]' => 'javascript:alert(1)',
+        ]);
+
+        $this->client->submit($form);
+
+        self::assertResponseStatusCodeSame(422);
+        self::assertNull($this->entityManager->getRepository(AppSetting::class)->getValue(AppSetting::ROOT_REDIRECT_URL));
+    }
+
+    private function loginAsAdmin(): void
+    {
+        $user = (new User())->setUsername('admin')->setPasswordHash('unused');
+        $this->entityManager->persist($user);
+        $this->entityManager->flush();
+
+        $this->client->loginUser($user);
+    }
+}
diff --git a/tests/Controller/HomeControllerTest.php b/tests/Controller/HomeControllerTest.php
new file mode 100644
index 0000000..0b78347
--- /dev/null
+++ b/tests/Controller/HomeControllerTest.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Tests\Controller;
+
+use App\Entity\AppSetting;
+use App\Tests\DatabaseWebTestCase;
+
+final class HomeControllerTest extends DatabaseWebTestCase
+{
+    public function testRootRedirectsToAdminWhenNoRedirectUrlIsConfigured(): void
+    {
+        $this->client->request('GET', '/');
+
+        self::assertResponseRedirects('/admin');
+    }
+
+    public function testRootRedirectsToConfiguredUrl(): void
+    {
+        $setting = (new AppSetting())
+            ->setName(AppSetting::ROOT_REDIRECT_URL)
+            ->setValue('https://example.com/installers');
+        $this->entityManager->persist($setting);
+        $this->entityManager->flush();
+
+        $this->client->request('GET', '/');
+
+        self::assertResponseRedirects('https://example.com/installers');
+    }
+}