diff --git a/src/Mcp/Tool/Constructeur/CreateConstructeurTool.php b/src/Mcp/Tool/Constructeur/CreateConstructeurTool.php
new file mode 100644
index 0000000..78ad2e3
--- /dev/null
+++ b/src/Mcp/Tool/Constructeur/CreateConstructeurTool.php
@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Constructeur;
+
+use App\Entity\Constructeur;
+use App\Mcp\Tool\McpToolHelper;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'create_constructeur',
+    description: 'Create a new constructeur (manufacturer/supplier). Requires ROLE_GESTIONNAIRE.',
+)]
+class CreateConstructeurTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+    ) {}
+
+    public function __invoke(
+        string $name,
+        string $email = '',
+        string $phone = '',
+    ): array {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $constructeur = new Constructeur();
+        $constructeur->setName($name);
+        $constructeur->setEmail('' !== $email ? $email : null);
+        $constructeur->setPhone('' !== $phone ? $phone : null);
+
+        $this->em->persist($constructeur);
+        $this->em->flush();
+
+        return $this->jsonResponse([
+            'id'   => $constructeur->getId(),
+            'name' => $constructeur->getName(),
+        ]);
+    }
+}
diff --git a/src/Mcp/Tool/Constructeur/DeleteConstructeurTool.php b/src/Mcp/Tool/Constructeur/DeleteConstructeurTool.php
new file mode 100644
index 0000000..2aa07ce
--- /dev/null
+++ b/src/Mcp/Tool/Constructeur/DeleteConstructeurTool.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Constructeur;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ConstructeurRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'delete_constructeur',
+    description: 'Delete a constructeur by ID. Requires ROLE_GESTIONNAIRE.',
+)]
+class DeleteConstructeurTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ConstructeurRepository $constructeurs,
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+    ) {}
+
+    public function __invoke(string $constructeurId): array
+    {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $constructeur = $this->constructeurs->find($constructeurId);
+
+        if (!$constructeur) {
+            $this->mcpError('not_found', "Constructeur not found: {$constructeurId}");
+        }
+
+        $this->em->remove($constructeur);
+        $this->em->flush();
+
+        return $this->jsonResponse(['deleted' => true, 'id' => $constructeurId]);
+    }
+}
diff --git a/src/Mcp/Tool/Constructeur/GetConstructeurTool.php b/src/Mcp/Tool/Constructeur/GetConstructeurTool.php
new file mode 100644
index 0000000..69647f0
--- /dev/null
+++ b/src/Mcp/Tool/Constructeur/GetConstructeurTool.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Constructeur;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ConstructeurRepository;
+use Mcp\Capability\Attribute\McpTool;
+
+#[McpTool(
+    name: 'get_constructeur',
+    description: 'Get a single constructeur (manufacturer/supplier) by ID with all its details.',
+)]
+class GetConstructeurTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ConstructeurRepository $constructeurs,
+    ) {}
+
+    public function __invoke(string $constructeurId): array
+    {
+        $constructeur = $this->constructeurs->find($constructeurId);
+
+        if (!$constructeur) {
+            $this->mcpError('not_found', "Constructeur not found: {$constructeurId}");
+        }
+
+        return $this->jsonResponse([
+            'id'        => $constructeur->getId(),
+            'name'      => $constructeur->getName(),
+            'email'     => $constructeur->getEmail(),
+            'phone'     => $constructeur->getPhone(),
+            'createdAt' => $constructeur->getCreatedAt()->format('Y-m-d H:i:s'),
+            'updatedAt' => $constructeur->getUpdatedAt()->format('Y-m-d H:i:s'),
+        ]);
+    }
+}
diff --git a/src/Mcp/Tool/Constructeur/ListConstructeursTool.php b/src/Mcp/Tool/Constructeur/ListConstructeursTool.php
new file mode 100644
index 0000000..6ebe64d
--- /dev/null
+++ b/src/Mcp/Tool/Constructeur/ListConstructeursTool.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Constructeur;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ConstructeurRepository;
+use Mcp\Capability\Attribute\McpTool;
+
+#[McpTool(
+    name: 'list_constructeurs',
+    description: 'List all constructeurs (manufacturers/suppliers) with pagination. Filterable by name.',
+)]
+class ListConstructeursTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ConstructeurRepository $constructeurs,
+    ) {}
+
+    public function __invoke(int $page = 1, int $limit = 30, string $search = ''): array
+    {
+        $p = $this->paginationParams($page, $limit);
+
+        $countQb = $this->constructeurs->createQueryBuilder('c')
+            ->select('COUNT(c.id)')
+        ;
+
+        $qb = $this->constructeurs->createQueryBuilder('c')
+            ->select('c.id', 'c.name', 'c.email', 'c.phone')
+            ->orderBy('c.name', 'ASC')
+        ;
+
+        if ('' !== $search) {
+            $countQb->andWhere('LOWER(c.name) LIKE LOWER(:search)')
+                ->setParameter('search', "%{$search}%")
+            ;
+            $qb->andWhere('LOWER(c.name) LIKE LOWER(:search)')
+                ->setParameter('search', "%{$search}%")
+            ;
+        }
+
+        $total = (int) $countQb->getQuery()->getSingleScalarResult();
+
+        $items = $qb->setFirstResult($p['offset'])
+            ->setMaxResults($p['limit'])
+            ->getQuery()
+            ->getArrayResult()
+        ;
+
+        return $this->paginatedResponse($items, $total, $p['page'], $p['limit']);
+    }
+}
diff --git a/src/Mcp/Tool/Constructeur/UpdateConstructeurTool.php b/src/Mcp/Tool/Constructeur/UpdateConstructeurTool.php
new file mode 100644
index 0000000..d136493
--- /dev/null
+++ b/src/Mcp/Tool/Constructeur/UpdateConstructeurTool.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Constructeur;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ConstructeurRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'update_constructeur',
+    description: 'Update an existing constructeur. Only provided fields are changed. Requires ROLE_GESTIONNAIRE.',
+)]
+class UpdateConstructeurTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ConstructeurRepository $constructeurs,
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+    ) {}
+
+    public function __invoke(
+        string $constructeurId,
+        ?string $name = null,
+        ?string $email = null,
+        ?string $phone = null,
+    ): array {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $constructeur = $this->constructeurs->find($constructeurId);
+
+        if (!$constructeur) {
+            $this->mcpError('not_found', "Constructeur not found: {$constructeurId}");
+        }
+
+        if (null !== $name) {
+            $constructeur->setName($name);
+        }
+        if (null !== $email) {
+            $constructeur->setEmail($email);
+        }
+        if (null !== $phone) {
+            $constructeur->setPhone($phone);
+        }
+
+        $this->em->flush();
+
+        return $this->jsonResponse(['id' => $constructeur->getId(), 'name' => $constructeur->getName()]);
+    }
+}
diff --git a/src/Mcp/Tool/Product/CreateProductTool.php b/src/Mcp/Tool/Product/CreateProductTool.php
new file mode 100644
index 0000000..22fbcdb
--- /dev/null
+++ b/src/Mcp/Tool/Product/CreateProductTool.php
@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Product;
+
+use App\Entity\Product;
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ConstructeurRepository;
+use App\Repository\ModelTypeRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'create_product',
+    description: 'Create a new product. supplierPrice must be a string (e.g. "12.50"). Requires ROLE_GESTIONNAIRE.',
+)]
+class CreateProductTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+        private readonly ModelTypeRepository $modelTypes,
+        private readonly ConstructeurRepository $constructeurs,
+    ) {}
+
+    /**
+     * @param string[] $constructeurIds
+     */
+    public function __invoke(
+        string $name,
+        string $reference = '',
+        string $supplierPrice = '',
+        string $modelTypeId = '',
+        array $constructeurIds = [],
+    ): array {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $product = new Product();
+        $product->setName($name);
+
+        if ('' !== $reference) {
+            $product->setReference($reference);
+        }
+        if ('' !== $supplierPrice) {
+            $product->setSupplierPrice($supplierPrice);
+        }
+
+        if ('' !== $modelTypeId) {
+            $modelType = $this->modelTypes->find($modelTypeId);
+            if (!$modelType) {
+                $this->mcpError('not_found', "ModelType not found: {$modelTypeId}");
+            }
+            $product->setTypeProduct($modelType);
+        }
+
+        foreach ($constructeurIds as $cId) {
+            $c = $this->constructeurs->find($cId);
+            if (!$c) {
+                $this->mcpError('not_found', "Constructeur not found: {$cId}");
+            }
+            $product->addConstructeur($c);
+        }
+
+        $this->em->persist($product);
+        $this->em->flush();
+
+        return $this->jsonResponse([
+            'id'   => $product->getId(),
+            'name' => $product->getName(),
+        ]);
+    }
+}
diff --git a/src/Mcp/Tool/Product/DeleteProductTool.php b/src/Mcp/Tool/Product/DeleteProductTool.php
new file mode 100644
index 0000000..76395bc
--- /dev/null
+++ b/src/Mcp/Tool/Product/DeleteProductTool.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Product;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ProductRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'delete_product',
+    description: 'Delete a product by ID. Requires ROLE_GESTIONNAIRE.',
+)]
+class DeleteProductTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ProductRepository $products,
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+    ) {}
+
+    public function __invoke(string $productId): array
+    {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $product = $this->products->find($productId);
+
+        if (!$product) {
+            $this->mcpError('not_found', "Product not found: {$productId}");
+        }
+
+        $this->em->remove($product);
+        $this->em->flush();
+
+        return $this->jsonResponse(['deleted' => true, 'id' => $productId]);
+    }
+}
diff --git a/src/Mcp/Tool/Product/GetProductTool.php b/src/Mcp/Tool/Product/GetProductTool.php
new file mode 100644
index 0000000..f3cf6ba
--- /dev/null
+++ b/src/Mcp/Tool/Product/GetProductTool.php
@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Product;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ProductRepository;
+use Mcp\Capability\Attribute\McpTool;
+
+#[McpTool(
+    name: 'get_product',
+    description: 'Get a single product by ID with all its details, including typeProduct and constructeurs.',
+)]
+class GetProductTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ProductRepository $products,
+    ) {}
+
+    public function __invoke(string $productId): array
+    {
+        $product = $this->products->find($productId);
+
+        if (!$product) {
+            $this->mcpError('not_found', "Product not found: {$productId}");
+        }
+
+        $constructeurs = [];
+        foreach ($product->getConstructeurs() as $c) {
+            $constructeurs[] = [
+                'id'   => $c->getId(),
+                'name' => $c->getName(),
+            ];
+        }
+
+        $typeProduct = null;
+        if ($product->getTypeProduct()) {
+            $typeProduct = [
+                'id'   => $product->getTypeProduct()->getId(),
+                'name' => $product->getTypeProduct()->getName(),
+            ];
+        }
+
+        return $this->jsonResponse([
+            'id'            => $product->getId(),
+            'name'          => $product->getName(),
+            'reference'     => $product->getReference(),
+            'supplierPrice' => $product->getSupplierPrice(),
+            'typeProduct'   => $typeProduct,
+            'constructeurs' => $constructeurs,
+            'createdAt'     => $product->getCreatedAt()->format('Y-m-d H:i:s'),
+            'updatedAt'     => $product->getUpdatedAt()->format('Y-m-d H:i:s'),
+        ]);
+    }
+}
diff --git a/src/Mcp/Tool/Product/ListProductsTool.php b/src/Mcp/Tool/Product/ListProductsTool.php
new file mode 100644
index 0000000..baf68ca
--- /dev/null
+++ b/src/Mcp/Tool/Product/ListProductsTool.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Product;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ProductRepository;
+use Mcp\Capability\Attribute\McpTool;
+
+#[McpTool(
+    name: 'list_products',
+    description: 'List products with pagination. Filterable by name or reference.',
+)]
+class ListProductsTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ProductRepository $products,
+    ) {}
+
+    public function __invoke(int $page = 1, int $limit = 30, string $search = ''): array
+    {
+        $p = $this->paginationParams($page, $limit);
+
+        $countQb = $this->products->createQueryBuilder('pr')
+            ->select('COUNT(pr.id)')
+        ;
+
+        $qb = $this->products->createQueryBuilder('pr')
+            ->select('pr.id', 'pr.name', 'pr.reference', 'pr.supplierPrice')
+            ->orderBy('pr.name', 'ASC')
+        ;
+
+        if ('' !== $search) {
+            $countQb->andWhere('LOWER(pr.name) LIKE LOWER(:search) OR LOWER(pr.reference) LIKE LOWER(:search)')
+                ->setParameter('search', "%{$search}%")
+            ;
+            $qb->andWhere('LOWER(pr.name) LIKE LOWER(:search) OR LOWER(pr.reference) LIKE LOWER(:search)')
+                ->setParameter('search', "%{$search}%")
+            ;
+        }
+
+        $total = (int) $countQb->getQuery()->getSingleScalarResult();
+
+        $items = $qb->setFirstResult($p['offset'])
+            ->setMaxResults($p['limit'])
+            ->getQuery()
+            ->getArrayResult()
+        ;
+
+        return $this->paginatedResponse($items, $total, $p['page'], $p['limit']);
+    }
+}
diff --git a/src/Mcp/Tool/Product/UpdateProductTool.php b/src/Mcp/Tool/Product/UpdateProductTool.php
new file mode 100644
index 0000000..c3fc9b9
--- /dev/null
+++ b/src/Mcp/Tool/Product/UpdateProductTool.php
@@ -0,0 +1,89 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Product;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\ConstructeurRepository;
+use App\Repository\ModelTypeRepository;
+use App\Repository\ProductRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'update_product',
+    description: 'Update an existing product. Only provided fields are changed. supplierPrice must be a string. Requires ROLE_GESTIONNAIRE.',
+)]
+class UpdateProductTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly ProductRepository $products,
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+        private readonly ModelTypeRepository $modelTypes,
+        private readonly ConstructeurRepository $constructeurs,
+    ) {}
+
+    /**
+     * @param null|string[] $constructeurIds
+     */
+    public function __invoke(
+        string $productId,
+        ?string $name = null,
+        ?string $reference = null,
+        ?string $supplierPrice = null,
+        ?string $modelTypeId = null,
+        ?array $constructeurIds = null,
+    ): array {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $product = $this->products->find($productId);
+
+        if (!$product) {
+            $this->mcpError('not_found', "Product not found: {$productId}");
+        }
+
+        if (null !== $name) {
+            $product->setName($name);
+        }
+        if (null !== $reference) {
+            $product->setReference($reference);
+        }
+        if (null !== $supplierPrice) {
+            $product->setSupplierPrice($supplierPrice);
+        }
+
+        if (null !== $modelTypeId) {
+            if ('' === $modelTypeId) {
+                $product->setTypeProduct(null);
+            } else {
+                $modelType = $this->modelTypes->find($modelTypeId);
+                if (!$modelType) {
+                    $this->mcpError('not_found', "ModelType not found: {$modelTypeId}");
+                }
+                $product->setTypeProduct($modelType);
+            }
+        }
+
+        if (null !== $constructeurIds) {
+            foreach ($product->getConstructeurs()->toArray() as $existing) {
+                $product->removeConstructeur($existing);
+            }
+            foreach ($constructeurIds as $cId) {
+                $c = $this->constructeurs->find($cId);
+                if (!$c) {
+                    $this->mcpError('not_found', "Constructeur not found: {$cId}");
+                }
+                $product->addConstructeur($c);
+            }
+        }
+
+        $this->em->flush();
+
+        return $this->jsonResponse(['id' => $product->getId(), 'name' => $product->getName()]);
+    }
+}
diff --git a/src/Mcp/Tool/Site/CreateSiteTool.php b/src/Mcp/Tool/Site/CreateSiteTool.php
new file mode 100644
index 0000000..0272239
--- /dev/null
+++ b/src/Mcp/Tool/Site/CreateSiteTool.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Site;
+
+use App\Entity\Site;
+use App\Mcp\Tool\McpToolHelper;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'create_site',
+    description: 'Create a new industrial site. Requires ROLE_GESTIONNAIRE.',
+)]
+class CreateSiteTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+    ) {}
+
+    public function __invoke(
+        string $name,
+        string $contactName = '',
+        string $contactPhone = '',
+        string $contactAddress = '',
+        string $contactPostalCode = '',
+        string $contactCity = '',
+        string $color = '',
+    ): array {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $site = new Site();
+        $site->setName($name);
+        $site->setContactName($contactName);
+        $site->setContactPhone($contactPhone);
+        $site->setContactAddress($contactAddress);
+        $site->setContactPostalCode($contactPostalCode);
+        $site->setContactCity($contactCity);
+        $site->setColor($color);
+
+        $this->em->persist($site);
+        $this->em->flush();
+
+        return $this->jsonResponse([
+            'id'   => $site->getId(),
+            'name' => $site->getName(),
+        ]);
+    }
+}
diff --git a/src/Mcp/Tool/Site/DeleteSiteTool.php b/src/Mcp/Tool/Site/DeleteSiteTool.php
new file mode 100644
index 0000000..c611684
--- /dev/null
+++ b/src/Mcp/Tool/Site/DeleteSiteTool.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Site;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\SiteRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'delete_site',
+    description: 'Delete a site by ID. Requires ROLE_GESTIONNAIRE.',
+)]
+class DeleteSiteTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly SiteRepository $sites,
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+    ) {}
+
+    public function __invoke(string $siteId): array
+    {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $site = $this->sites->find($siteId);
+
+        if (!$site) {
+            $this->mcpError('not_found', "Site not found: {$siteId}");
+        }
+
+        $this->em->remove($site);
+        $this->em->flush();
+
+        return $this->jsonResponse(['deleted' => true, 'id' => $siteId]);
+    }
+}
diff --git a/src/Mcp/Tool/Site/GetSiteTool.php b/src/Mcp/Tool/Site/GetSiteTool.php
new file mode 100644
index 0000000..233a354
--- /dev/null
+++ b/src/Mcp/Tool/Site/GetSiteTool.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Site;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\SiteRepository;
+use Mcp\Capability\Attribute\McpTool;
+
+#[McpTool(
+    name: 'get_site',
+    description: 'Get a single site by ID with all its details (name, contact info, address).',
+)]
+class GetSiteTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly SiteRepository $sites,
+    ) {}
+
+    public function __invoke(string $siteId): array
+    {
+        $site = $this->sites->find($siteId);
+
+        if (!$site) {
+            $this->mcpError('not_found', "Site not found: {$siteId}");
+        }
+
+        return $this->jsonResponse([
+            'id'                => $site->getId(),
+            'name'              => $site->getName(),
+            'contactName'       => $site->getContactName(),
+            'contactPhone'      => $site->getContactPhone(),
+            'contactAddress'    => $site->getContactAddress(),
+            'contactPostalCode' => $site->getContactPostalCode(),
+            'contactCity'       => $site->getContactCity(),
+            'color'             => $site->getColor(),
+            'createdAt'         => $site->getCreatedAt()->format('Y-m-d H:i:s'),
+            'updatedAt'         => $site->getUpdatedAt()->format('Y-m-d H:i:s'),
+        ]);
+    }
+}
diff --git a/src/Mcp/Tool/Site/ListSitesTool.php b/src/Mcp/Tool/Site/ListSitesTool.php
new file mode 100644
index 0000000..f99367f
--- /dev/null
+++ b/src/Mcp/Tool/Site/ListSitesTool.php
@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Site;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\SiteRepository;
+use Mcp\Capability\Attribute\McpTool;
+
+#[McpTool(
+    name: 'list_sites',
+    description: 'List all industrial sites with pagination. Sites contain machines. Filterable by name.',
+)]
+class ListSitesTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly SiteRepository $sites,
+    ) {}
+
+    public function __invoke(int $page = 1, int $limit = 30, string $search = ''): array
+    {
+        $p = $this->paginationParams($page, $limit);
+
+        $countQb = $this->sites->createQueryBuilder('s')
+            ->select('COUNT(s.id)')
+        ;
+
+        $qb = $this->sites->createQueryBuilder('s')
+            ->select('s.id', 's.name', 's.contactName', 's.contactCity', 's.contactPhone')
+            ->orderBy('s.name', 'ASC')
+        ;
+
+        if ('' !== $search) {
+            $countQb->andWhere('LOWER(s.name) LIKE LOWER(:search)')
+                ->setParameter('search', "%{$search}%")
+            ;
+            $qb->andWhere('LOWER(s.name) LIKE LOWER(:search)')
+                ->setParameter('search', "%{$search}%")
+            ;
+        }
+
+        $total = (int) $countQb->getQuery()->getSingleScalarResult();
+
+        $items = $qb->setFirstResult($p['offset'])
+            ->setMaxResults($p['limit'])
+            ->getQuery()
+            ->getArrayResult()
+        ;
+
+        return $this->paginatedResponse($items, $total, $p['page'], $p['limit']);
+    }
+}
diff --git a/src/Mcp/Tool/Site/UpdateSiteTool.php b/src/Mcp/Tool/Site/UpdateSiteTool.php
new file mode 100644
index 0000000..010881d
--- /dev/null
+++ b/src/Mcp/Tool/Site/UpdateSiteTool.php
@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Mcp\Tool\Site;
+
+use App\Mcp\Tool\McpToolHelper;
+use App\Repository\SiteRepository;
+use Doctrine\ORM\EntityManagerInterface;
+use Mcp\Capability\Attribute\McpTool;
+use Symfony\Bundle\SecurityBundle\Security;
+
+#[McpTool(
+    name: 'update_site',
+    description: 'Update an existing site. Only provided fields are changed. Requires ROLE_GESTIONNAIRE.',
+)]
+class UpdateSiteTool
+{
+    use McpToolHelper;
+
+    public function __construct(
+        private readonly SiteRepository $sites,
+        private readonly EntityManagerInterface $em,
+        private readonly Security $security,
+    ) {}
+
+    public function __invoke(
+        string $siteId,
+        ?string $name = null,
+        ?string $contactName = null,
+        ?string $contactPhone = null,
+        ?string $contactAddress = null,
+        ?string $contactPostalCode = null,
+        ?string $contactCity = null,
+        ?string $color = null,
+    ): array {
+        $this->requireRole($this->security, 'ROLE_GESTIONNAIRE');
+
+        $site = $this->sites->find($siteId);
+
+        if (!$site) {
+            $this->mcpError('not_found', "Site not found: {$siteId}");
+        }
+
+        if (null !== $name) {
+            $site->setName($name);
+        }
+        if (null !== $contactName) {
+            $site->setContactName($contactName);
+        }
+        if (null !== $contactPhone) {
+            $site->setContactPhone($contactPhone);
+        }
+        if (null !== $contactAddress) {
+            $site->setContactAddress($contactAddress);
+        }
+        if (null !== $contactPostalCode) {
+            $site->setContactPostalCode($contactPostalCode);
+        }
+        if (null !== $contactCity) {
+            $site->setContactCity($contactCity);
+        }
+        if (null !== $color) {
+            $site->setColor($color);
+        }
+
+        $this->em->flush();
+
+        return $this->jsonResponse(['id' => $site->getId(), 'name' => $site->getName()]);
+    }
+}
diff --git a/tests/AbstractApiTestCase.php b/tests/AbstractApiTestCase.php
index 7b72f30..6e66eb4 100644
--- a/tests/AbstractApiTestCase.php
+++ b/tests/AbstractApiTestCase.php
@@ -25,6 +25,7 @@ use App\Entity\Profile;
 use App\Entity\Site;
 use App\Enum\ModelCategory;
 use Doctrine\ORM\EntityManagerInterface;
+use stdClass;
 use Symfony\Component\PasswordHasher\Hasher\UserPasswordHasherInterface;
 
 abstract class AbstractApiTestCase extends ApiTestCase
@@ -85,6 +86,93 @@ abstract class AbstractApiTestCase extends ApiTestCase
         return static::createClient();
     }
 
+    // ── MCP helpers ──────────────────────────────────────────────────
+
+    /**
+     * @return array{client: Client, sessionId: string}
+     */
+    protected function createMcpClient(string $role = 'ROLE_VIEWER'): array
+    {
+        $profile = $this->createProfile(roles: [$role], password: self::DEFAULT_PASSWORD);
+
+        return $this->initMcpSession($profile->getId(), self::DEFAULT_PASSWORD);
+    }
+
+    /**
+     * @return array{client: Client, sessionId: string}
+     */
+    protected function initMcpSession(string $profileId, string $password): array
+    {
+        $client = static::createClient();
+
+        $response = $client->request('POST', '/_mcp', [
+            'headers' => [
+                'Content-Type'       => 'application/json',
+                'X-Profile-Id'       => $profileId,
+                'X-Profile-Password' => $password,
+            ],
+            'body' => json_encode([
+                'jsonrpc' => '2.0',
+                'method'  => 'initialize',
+                'params'  => [
+                    'protocolVersion' => '2025-03-26',
+                    'capabilities'    => new stdClass(),
+                    'clientInfo'      => ['name' => 'test', 'version' => '1.0'],
+                ],
+                'id' => 1,
+            ]),
+        ]);
+
+        $sessionId = $response->getHeaders()['mcp-session-id'][0] ?? '';
+
+        $client->request('POST', '/_mcp', [
+            'headers' => [
+                'Content-Type'       => 'application/json',
+                'X-Profile-Id'       => $profileId,
+                'X-Profile-Password' => $password,
+                'Mcp-Session-Id'     => $sessionId,
+            ],
+            'body' => json_encode([
+                'jsonrpc' => '2.0',
+                'method'  => 'notifications/initialized',
+            ]),
+        ]);
+
+        return ['client' => $client, 'sessionId' => $sessionId, 'profileId' => $profileId, 'password' => $password];
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    protected function callMcpTool(array $session, string $toolName, array $arguments = []): array
+    {
+        $response = $session['client']->request('POST', '/_mcp', [
+            'headers' => [
+                'Content-Type'       => 'application/json',
+                'X-Profile-Id'       => $session['profileId'],
+                'X-Profile-Password' => $session['password'],
+                'Mcp-Session-Id'     => $session['sessionId'],
+            ],
+            'body' => json_encode([
+                'jsonrpc' => '2.0',
+                'method'  => 'tools/call',
+                'params'  => [
+                    'name'      => $toolName,
+                    'arguments' => empty($arguments) ? new stdClass() : $arguments,
+                ],
+                'id' => random_int(10, 9999),
+            ]),
+        ]);
+
+        $data = $response->toArray(false);
+
+        if (isset($data['result']['content'][0]['text'])) {
+            $data['_parsed'] = json_decode($data['result']['content'][0]['text'], true);
+        }
+
+        return $data;
+    }
+
     // ── Factory helpers ─────────────────────────────────────────────
 
     protected function createProfile(
diff --git a/tests/Mcp/Tool/Constructeur/ConstructeursCrudToolTest.php b/tests/Mcp/Tool/Constructeur/ConstructeursCrudToolTest.php
new file mode 100644
index 0000000..efb22cf
--- /dev/null
+++ b/tests/Mcp/Tool/Constructeur/ConstructeursCrudToolTest.php
@@ -0,0 +1,85 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Mcp\Tool\Constructeur;
+
+use App\Tests\AbstractApiTestCase;
+
+/**
+ * @internal
+ */
+class ConstructeursCrudToolTest extends AbstractApiTestCase
+{
+    public function testListConstructeurs(): void
+    {
+        $this->createConstructeur(name: 'Constructeur Alpha');
+        $this->createConstructeur(name: 'Constructeur Beta');
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'list_constructeurs');
+
+        $this->assertArrayHasKey('_parsed', $data, 'MCP response: '.json_encode($data));
+        $this->assertGreaterThanOrEqual(2, $data['_parsed']['total']);
+    }
+
+    public function testGetConstructeur(): void
+    {
+        $constructeur = $this->createConstructeur(name: 'Constructeur Gamma');
+        $session      = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'get_constructeur', ['constructeurId' => $constructeur->getId()]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('Constructeur Gamma', $data['_parsed']['name']);
+    }
+
+    public function testCreateConstructeur(): void
+    {
+        $session = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'create_constructeur', [
+            'name'  => 'Constructeur Nouveau',
+            'email' => 'contact@nouveau.com',
+            'phone' => '+33123456789',
+        ]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('Constructeur Nouveau', $data['_parsed']['name']);
+        $this->assertNotEmpty($data['_parsed']['id']);
+    }
+
+    public function testCreateConstructeurRequiresGestionnaire(): void
+    {
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'create_constructeur', ['name' => 'Forbidden']);
+
+        $this->assertArrayHasKey('error', $data, 'Should fail with VIEWER role');
+    }
+
+    public function testUpdateConstructeur(): void
+    {
+        $constructeur = $this->createConstructeur(name: 'Old Name');
+        $session      = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'update_constructeur', [
+            'constructeurId' => $constructeur->getId(),
+            'name'           => 'New Name',
+        ]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('New Name', $data['_parsed']['name']);
+    }
+
+    public function testDeleteConstructeur(): void
+    {
+        $constructeur = $this->createConstructeur(name: 'To Delete');
+        $session      = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'delete_constructeur', ['constructeurId' => $constructeur->getId()]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertTrue($data['_parsed']['deleted']);
+    }
+}
diff --git a/tests/Mcp/Tool/DashboardStatsToolTest.php b/tests/Mcp/Tool/DashboardStatsToolTest.php
index bcc5b56..64dbf6a 100644
--- a/tests/Mcp/Tool/DashboardStatsToolTest.php
+++ b/tests/Mcp/Tool/DashboardStatsToolTest.php
@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace App\Tests\Mcp\Tool;
 
 use App\Tests\AbstractApiTestCase;
-use stdClass;
 
 /**
  * @internal
@@ -18,98 +17,13 @@ class DashboardStatsToolTest extends AbstractApiTestCase
         $this->createMachine(name: 'Machine Stats 1', site: $site);
         $this->createMachine(name: 'Machine Stats 2', site: $site);
 
-        $profile = $this->createProfile(roles: ['ROLE_VIEWER'], password: 'test123');
-        $session = $this->initMcpSession($profile->getId(), 'test123');
+        $session = $this->createMcpClient('ROLE_VIEWER');
+        $data    = $this->callMcpTool($session, 'get_dashboard_stats');
 
-        $response = $session['client']->request('POST', '/_mcp', [
-            'headers' => [
-                'Content-Type'       => 'application/json',
-                'X-Profile-Id'       => $profile->getId(),
-                'X-Profile-Password' => 'test123',
-                'Mcp-Session-Id'     => $session['sessionId'],
-            ],
-            'body' => json_encode([
-                'jsonrpc' => '2.0',
-                'method'  => 'tools/call',
-                'params'  => [
-                    'name'      => 'get_dashboard_stats',
-                    'arguments' => new stdClass(),
-                ],
-                'id' => 2,
-            ]),
-        ]);
-
-        // First list tools to see what's registered
-        $listResponse = $session['client']->request('POST', '/_mcp', [
-            'headers' => [
-                'Content-Type'       => 'application/json',
-                'X-Profile-Id'       => $profile->getId(),
-                'X-Profile-Password' => 'test123',
-                'Mcp-Session-Id'     => $session['sessionId'],
-            ],
-            'body' => json_encode([
-                'jsonrpc' => '2.0',
-                'method'  => 'tools/list',
-                'params'  => new stdClass(),
-                'id'      => 3,
-            ]),
-        ]);
-        $toolsList = $listResponse->toArray(false);
-
-        $this->assertResponseIsSuccessful();
-        $data = $response->toArray(false);
-        $this->assertArrayHasKey('result', $data, 'Tools list: '.json_encode($toolsList).' | Call response: '.json_encode($data));
-
-        // Parse the text content from the MCP response
-        $content = $data['result']['content'][0]['text'] ?? '';
-        $stats   = json_decode($content, true);
-        $this->assertIsArray($stats);
+        $this->assertArrayHasKey('_parsed', $data);
+        $stats = $data['_parsed'];
         $this->assertGreaterThanOrEqual(2, $stats['machines']);
         $this->assertArrayHasKey('sites', $stats);
         $this->assertArrayHasKey('unresolvedComments', $stats);
     }
-
-    private function initMcpSession(string $profileId, string $password): array
-    {
-        $client = static::createClient();
-
-        // Step 1: Initialize MCP session
-        $response = $client->request('POST', '/_mcp', [
-            'headers' => [
-                'Content-Type'       => 'application/json',
-                'X-Profile-Id'       => $profileId,
-                'X-Profile-Password' => $password,
-            ],
-            'body' => json_encode([
-                'jsonrpc' => '2.0',
-                'method'  => 'initialize',
-                'params'  => [
-                    'protocolVersion' => '2025-03-26',
-                    'capabilities'    => new stdClass(),
-                    'clientInfo'      => ['name' => 'test', 'version' => '1.0'],
-                ],
-                'id' => 1,
-            ]),
-        ]);
-
-        $this->assertResponseIsSuccessful();
-        $sessionId = $response->getHeaders()['mcp-session-id'][0] ?? '';
-        $this->assertNotEmpty($sessionId, 'MCP session ID should be returned');
-
-        // Step 2: Send initialized notification
-        $client->request('POST', '/_mcp', [
-            'headers' => [
-                'Content-Type'       => 'application/json',
-                'X-Profile-Id'       => $profileId,
-                'X-Profile-Password' => $password,
-                'Mcp-Session-Id'     => $sessionId,
-            ],
-            'body' => json_encode([
-                'jsonrpc' => '2.0',
-                'method'  => 'notifications/initialized',
-            ]),
-        ]);
-
-        return ['client' => $client, 'sessionId' => $sessionId];
-    }
 }
diff --git a/tests/Mcp/Tool/Product/ProductsCrudToolTest.php b/tests/Mcp/Tool/Product/ProductsCrudToolTest.php
new file mode 100644
index 0000000..a0593db
--- /dev/null
+++ b/tests/Mcp/Tool/Product/ProductsCrudToolTest.php
@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Mcp\Tool\Product;
+
+use App\Enum\ModelCategory;
+use App\Tests\AbstractApiTestCase;
+
+/**
+ * @internal
+ */
+class ProductsCrudToolTest extends AbstractApiTestCase
+{
+    public function testListProducts(): void
+    {
+        $this->createProduct(name: 'Product Alpha');
+        $this->createProduct(name: 'Product Beta');
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'list_products');
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertGreaterThanOrEqual(2, $data['_parsed']['total']);
+    }
+
+    public function testGetProduct(): void
+    {
+        $constructeur = $this->createConstructeur(name: 'Fournisseur A');
+        $modelType    = $this->createModelType(name: 'Type Produit', code: 'TP-001', category: ModelCategory::PRODUCT);
+        $product      = $this->createProduct(name: 'Product Gamma', reference: 'REF-001', type: $modelType);
+
+        // Add constructeur to product
+        $product->addConstructeur($constructeur);
+        $this->getEntityManager()->flush();
+
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'get_product', ['productId' => $product->getId()]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('Product Gamma', $data['_parsed']['name']);
+        $this->assertSame('REF-001', $data['_parsed']['reference']);
+        $this->assertNotNull($data['_parsed']['typeProduct']);
+        $this->assertSame('Type Produit', $data['_parsed']['typeProduct']['name']);
+        $this->assertCount(1, $data['_parsed']['constructeurs']);
+        $this->assertSame('Fournisseur A', $data['_parsed']['constructeurs'][0]['name']);
+    }
+
+    public function testCreateProduct(): void
+    {
+        $session = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'create_product', [
+            'name'          => 'Product Nouveau',
+            'reference'     => 'REF-NEW',
+            'supplierPrice' => '42.99',
+        ]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('Product Nouveau', $data['_parsed']['name']);
+        $this->assertNotEmpty($data['_parsed']['id']);
+    }
+
+    public function testCreateProductRequiresGestionnaire(): void
+    {
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'create_product', ['name' => 'Forbidden']);
+
+        $this->assertArrayHasKey('error', $data, 'Should fail with VIEWER role');
+    }
+
+    public function testUpdateProduct(): void
+    {
+        $product = $this->createProduct(name: 'Old Product');
+        $session = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'update_product', [
+            'productId'     => $product->getId(),
+            'name'          => 'Updated Product',
+            'supplierPrice' => '99.00',
+        ]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('Updated Product', $data['_parsed']['name']);
+    }
+
+    public function testDeleteProduct(): void
+    {
+        $product = $this->createProduct(name: 'To Delete');
+        $session = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'delete_product', ['productId' => $product->getId()]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertTrue($data['_parsed']['deleted']);
+    }
+}
diff --git a/tests/Mcp/Tool/Site/SitesCrudToolTest.php b/tests/Mcp/Tool/Site/SitesCrudToolTest.php
new file mode 100644
index 0000000..0c70548
--- /dev/null
+++ b/tests/Mcp/Tool/Site/SitesCrudToolTest.php
@@ -0,0 +1,84 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Mcp\Tool\Site;
+
+use App\Tests\AbstractApiTestCase;
+
+/**
+ * @internal
+ */
+class SitesCrudToolTest extends AbstractApiTestCase
+{
+    public function testListSites(): void
+    {
+        $this->createSite(name: 'Site Alpha');
+        $this->createSite(name: 'Site Beta');
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'list_sites');
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertGreaterThanOrEqual(2, $data['_parsed']['total']);
+    }
+
+    public function testGetSite(): void
+    {
+        $site    = $this->createSite(name: 'Site Gamma');
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'get_site', ['siteId' => $site->getId()]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('Site Gamma', $data['_parsed']['name']);
+    }
+
+    public function testCreateSite(): void
+    {
+        $session = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'create_site', [
+            'name'        => 'Site Nouveau',
+            'contactCity' => 'Paris',
+        ]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('Site Nouveau', $data['_parsed']['name']);
+        $this->assertNotEmpty($data['_parsed']['id']);
+    }
+
+    public function testCreateSiteRequiresGestionnaire(): void
+    {
+        $session = $this->createMcpClient('ROLE_VIEWER');
+
+        $data = $this->callMcpTool($session, 'create_site', ['name' => 'Forbidden']);
+
+        $this->assertArrayHasKey('error', $data);
+    }
+
+    public function testUpdateSite(): void
+    {
+        $site    = $this->createSite(name: 'Old Name');
+        $session = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'update_site', [
+            'siteId' => $site->getId(),
+            'name'   => 'New Name',
+        ]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertSame('New Name', $data['_parsed']['name']);
+    }
+
+    public function testDeleteSite(): void
+    {
+        $site    = $this->createSite(name: 'To Delete');
+        $session = $this->createMcpClient('ROLE_GESTIONNAIRE');
+
+        $data = $this->callMcpTool($session, 'delete_site', ['siteId' => $site->getId()]);
+
+        $this->assertArrayHasKey('_parsed', $data);
+        $this->assertTrue($data['_parsed']['deleted']);
+    }
+}