diff --git a/src/LinkRepository.php b/src/LinkRepository.php
new file mode 100644
index 0000000..79a010c
--- /dev/null
+++ b/src/LinkRepository.php
@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+final class LinkRepository
+{
+    private PDO $pdo;
+
+    public function __construct(PDO $pdo)
+    {
+        $this->pdo = $pdo;
+    }
+
+    public function all(): array
+    {
+        return $this->pdo->query('SELECT * FROM links ORDER BY id DESC')->fetchAll();
+    }
+
+    public function find(int $id): ?array
+    {
+        $stmt = $this->pdo->prepare('SELECT * FROM links WHERE id = :id');
+        $stmt->execute(['id' => $id]);
+        $row = $stmt->fetch();
+
+        return $row ?: null;
+    }
+
+    public function create(string $title, string $description, string $linkUrl, ?string $thumbnail): int
+    {
+        $stmt = $this->pdo->prepare(
+            'INSERT INTO links (title, description, link_url, thumbnail)
+             VALUES (:title, :description, :link_url, :thumbnail)'
+        );
+        $stmt->execute([
+            'title'       => $title,
+            'description' => $description,
+            'link_url'    => $linkUrl,
+            'thumbnail'   => $thumbnail,
+        ]);
+
+        return (int) $this->pdo->lastInsertId();
+    }
+
+    public function update(int $id, string $title, string $description, string $linkUrl, ?string $thumbnail): bool
+    {
+        $stmt = $this->pdo->prepare(
+            'UPDATE links
+                SET title = :title,
+                    description = :description,
+                    link_url = :link_url,
+                    thumbnail = :thumbnail,
+                    updated_at = datetime(\'now\')
+             WHERE id = :id'
+        );
+        $stmt->execute([
+            'id'          => $id,
+            'title'       => $title,
+            'description' => $description,
+            'link_url'    => $linkUrl,
+            'thumbnail'   => $thumbnail,
+        ]);
+
+        return $stmt->rowCount() > 0;
+    }
+
+    public function delete(int $id): bool
+    {
+        $stmt = $this->pdo->prepare('DELETE FROM links WHERE id = :id');
+        $stmt->execute(['id' => $id]);
+
+        return $stmt->rowCount() > 0;
+    }
+}