diff --git a/bin/test-integration b/bin/test-integration
new file mode 100755
index 0000000..93d28c9
--- /dev/null
+++ b/bin/test-integration
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Load .env.local secrets and run integration tests inside the app container.
+if [ -f "$(dirname "$0")/../.env.local" ]; then
+  set -a
+  # shellcheck disable=SC1091
+  source "$(dirname "$0")/../.env.local"
+  set +a
+fi
+
+docker compose exec \
+  -e FRAPPE_ERP_BASE_URL="${FRAPPE_ERP_BASE_URL:-}" \
+  -e FRAPPE_ERP_API_KEY="${FRAPPE_ERP_API_KEY:-}" \
+  -e FRAPPE_ERP_API_SECRET="${FRAPPE_ERP_API_SECRET:-}" \
+  app php vendor/bin/phpunit tests/Integration/ --testdox "$@"
diff --git a/src/Infrastructure/Channel/Frappe/FrappeHttpClient.php b/src/Infrastructure/Channel/Frappe/FrappeHttpClient.php
index 01e0546..1ba2f1d 100644
--- a/src/Infrastructure/Channel/Frappe/FrappeHttpClient.php
+++ b/src/Infrastructure/Channel/Frappe/FrappeHttpClient.php
@@ -42,6 +42,40 @@ class FrappeHttpClient
         return $result;
     }
 
+    /**
+     * GET a Frappe resource endpoint.
+     *
+     * @return array<string, mixed>
+     */
+    public function get(string $path): array
+    {
+        $response = $this->httpClient->request('GET', $this->baseUrl.$path, [
+            'headers' => ['Authorization' => $this->authHeader],
+        ]);
+
+        /** @var array<string, mixed> $result */
+        $result = $response->toArray();
+
+        return $result;
+    }
+
+    /**
+     * DELETE a Frappe resource.
+     *
+     * @return array<string, mixed>
+     */
+    public function delete(string $path): array
+    {
+        $response = $this->httpClient->request('DELETE', $this->baseUrl.$path, [
+            'headers' => ['Authorization' => $this->authHeader],
+        ]);
+
+        /** @var array<string, mixed> $result */
+        $result = $response->toArray();
+
+        return $result;
+    }
+
     /** GET raw binary content (for PDF downloads). */
     public function getContent(string $path): string
     {
diff --git a/tests/Integration/Infrastructure/Channel/Frappe/FrappeCustomerIntegrationTest.php b/tests/Integration/Infrastructure/Channel/Frappe/FrappeCustomerIntegrationTest.php
new file mode 100644
index 0000000..6958085
--- /dev/null
+++ b/tests/Integration/Infrastructure/Channel/Frappe/FrappeCustomerIntegrationTest.php
@@ -0,0 +1,110 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Integration\Infrastructure\Channel\Frappe;
+
+use App\Infrastructure\Channel\Frappe\FrappeHttpClient;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpClient\HttpClient;
+use Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface;
+
+/**
+ * Integration tests against the live ERPNext staging instance.
+ * Requires FRAPPE_ERP_BASE_URL, FRAPPE_ERP_API_KEY, FRAPPE_ERP_API_SECRET in .env.local.
+ *
+ * Run with: vendor/bin/phpunit --testsuite Integration
+ */
+final class FrappeCustomerIntegrationTest extends TestCase
+{
+    private FrappeHttpClient $client;
+    private string $createdCustomerName = '';
+
+    protected function setUp(): void
+    {
+        $baseUrl = $_SERVER['FRAPPE_ERP_BASE_URL'] ?? getenv('FRAPPE_ERP_BASE_URL');
+        $apiKey = $_SERVER['FRAPPE_ERP_API_KEY'] ?? getenv('FRAPPE_ERP_API_KEY');
+        $apiSecret = $_SERVER['FRAPPE_ERP_API_SECRET'] ?? getenv('FRAPPE_ERP_API_SECRET');
+
+        if (!$baseUrl || !$apiKey || !$apiSecret) {
+            $this->markTestSkipped('FRAPPE_ERP_* env vars not set');
+        }
+
+        $this->client = new FrappeHttpClient(
+            HttpClient::create(),
+            (string) $baseUrl,
+            (string) $apiKey,
+            (string) $apiSecret,
+        );
+    }
+
+    protected function tearDown(): void
+    {
+        if ('' !== $this->createdCustomerName) {
+            try {
+                $this->client->delete('/api/resource/Customer/'.$this->createdCustomerName);
+            } catch (\Throwable) {
+                // best-effort cleanup
+            }
+        }
+    }
+
+    public function test_create_customer(): void
+    {
+        $response = $this->client->post('/api/resource/Customer', [
+            'customer_name' => 'Test Superseller Integration',
+            'customer_type' => 'Individual',
+            'customer_group' => 'Individual',
+            'territory' => 'Germany',
+        ]);
+
+        $this->assertArrayHasKey('data', $response);
+        $this->assertNotEmpty($response['data']['name']);
+
+        $this->createdCustomerName = $response['data']['name'];
+    }
+
+    public function test_find_created_customer(): void
+    {
+        // Create first
+        $created = $this->client->post('/api/resource/Customer', [
+            'customer_name' => 'Test Superseller Integration',
+            'customer_type' => 'Individual',
+            'customer_group' => 'Individual',
+            'territory' => 'Germany',
+        ]);
+        $this->createdCustomerName = $created['data']['name'];
+
+        // Find by name
+        $response = $this->client->get('/api/resource/Customer/'.$this->createdCustomerName);
+
+        $this->assertSame($this->createdCustomerName, $response['data']['name']);
+        $this->assertSame('Test Superseller Integration', $response['data']['customer_name']);
+    }
+
+    public function test_find_nonexistent_customer_throws(): void
+    {
+        $this->expectException(ClientExceptionInterface::class);
+
+        $this->client->get('/api/resource/Customer/CUST-DOES-NOT-EXIST-99999');
+    }
+
+    public function test_delete_customer(): void
+    {
+        // Create
+        $created = $this->client->post('/api/resource/Customer', [
+            'customer_name' => 'Test Superseller Integration',
+            'customer_type' => 'Individual',
+            'customer_group' => 'Individual',
+            'territory' => 'Germany',
+        ]);
+        $name = $created['data']['name'];
+
+        // Delete
+        $this->client->delete('/api/resource/Customer/'.$name);
+
+        // Confirm gone
+        $this->expectException(ClientExceptionInterface::class);
+        $this->client->get('/api/resource/Customer/'.$name);
+    }
+}