diff --git a/migrations/Version20260309213629.php b/migrations/Version20260309213629.php
new file mode 100644
index 0000000..c487c62
--- /dev/null
+++ b/migrations/Version20260309213629.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260309213629 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql('CREATE TABLE client (id INT GENERATED BY DEFAULT AS IDENTITY NOT NULL, name VARCHAR(255) NOT NULL, email VARCHAR(255) DEFAULT NULL, phone VARCHAR(50) DEFAULT NULL, street VARCHAR(255) DEFAULT NULL, city VARCHAR(255) DEFAULT NULL, postal_code VARCHAR(20) DEFAULT NULL, PRIMARY KEY (id))');
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('DROP TABLE client');
+    }
+}
diff --git a/src/Entity/Client.php b/src/Entity/Client.php
new file mode 100644
index 0000000..41e7551
--- /dev/null
+++ b/src/Entity/Client.php
@@ -0,0 +1,155 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Entity;
+
+use ApiPlatform\Metadata\ApiResource;
+use ApiPlatform\Metadata\Delete;
+use ApiPlatform\Metadata\Get;
+use ApiPlatform\Metadata\GetCollection;
+use ApiPlatform\Metadata\Patch;
+use ApiPlatform\Metadata\Post;
+use App\Repository\ClientRepository;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Serializer\Attribute\Groups;
+
+#[ApiResource(
+    operations: [
+        new GetCollection(),
+        new Get(),
+        new Post(security: "is_granted('ROLE_ADMIN')"),
+        new Patch(security: "is_granted('ROLE_ADMIN')"),
+        new Delete(security: "is_granted('ROLE_ADMIN')"),
+    ],
+    normalizationContext: ['groups' => ['client:read']],
+    denormalizationContext: ['groups' => ['client:write']],
+    order: ['name' => 'ASC'],
+)]
+#[ORM\Entity(repositoryClass: ClientRepository::class)]
+class Client
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    #[Groups(['client:read', 'project:read'])]
+    private ?int $id = null;
+
+    #[ORM\Column(length: 255)]
+    #[Groups(['client:read', 'client:write', 'project:read'])]
+    private ?string $name = null;
+
+    #[ORM\Column(length: 255, nullable: true)]
+    #[Groups(['client:read', 'client:write'])]
+    private ?string $email = null;
+
+    #[ORM\Column(length: 50, nullable: true)]
+    #[Groups(['client:read', 'client:write'])]
+    private ?string $phone = null;
+
+    #[ORM\Column(length: 255, nullable: true)]
+    #[Groups(['client:read', 'client:write'])]
+    private ?string $street = null;
+
+    #[ORM\Column(length: 255, nullable: true)]
+    #[Groups(['client:read', 'client:write'])]
+    private ?string $city = null;
+
+    #[ORM\Column(length: 20, nullable: true)]
+    #[Groups(['client:read', 'client:write'])]
+    private ?string $postalCode = null;
+
+    /** @var Collection<int, Project> */
+    #[ORM\OneToMany(targetEntity: Project::class, mappedBy: 'client')]
+    private Collection $projects;
+
+    public function __construct()
+    {
+        $this->projects = new ArrayCollection();
+    }
+
+    public function getId(): ?int
+    {
+        return $this->id;
+    }
+
+    public function getName(): ?string
+    {
+        return $this->name;
+    }
+
+    public function setName(string $name): static
+    {
+        $this->name = $name;
+
+        return $this;
+    }
+
+    public function getEmail(): ?string
+    {
+        return $this->email;
+    }
+
+    public function setEmail(?string $email): static
+    {
+        $this->email = $email;
+
+        return $this;
+    }
+
+    public function getPhone(): ?string
+    {
+        return $this->phone;
+    }
+
+    public function setPhone(?string $phone): static
+    {
+        $this->phone = $phone;
+
+        return $this;
+    }
+
+    public function getStreet(): ?string
+    {
+        return $this->street;
+    }
+
+    public function setStreet(?string $street): static
+    {
+        $this->street = $street;
+
+        return $this;
+    }
+
+    public function getCity(): ?string
+    {
+        return $this->city;
+    }
+
+    public function setCity(?string $city): static
+    {
+        $this->city = $city;
+
+        return $this;
+    }
+
+    public function getPostalCode(): ?string
+    {
+        return $this->postalCode;
+    }
+
+    public function setPostalCode(?string $postalCode): static
+    {
+        $this->postalCode = $postalCode;
+
+        return $this;
+    }
+
+    /** @return Collection<int, Project> */
+    public function getProjects(): Collection
+    {
+        return $this->projects;
+    }
+}
diff --git a/src/Repository/ClientRepository.php b/src/Repository/ClientRepository.php
new file mode 100644
index 0000000..198e9d2
--- /dev/null
+++ b/src/Repository/ClientRepository.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repository;
+
+use App\Entity\Client;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+
+class ClientRepository extends ServiceEntityRepository
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, Client::class);
+    }
+}