diff --git a/e2e/define-router.spec.ts b/e2e/define-router.spec.ts
index 15a98d070..5aed9d852 100644
--- a/e2e/define-router.spec.ts
+++ b/e2e/define-router.spec.ts
@@ -26,5 +26,25 @@ for (const mode of ['DEV', 'PRD'] as const) {
       await page.goto(`http://localhost:${port}/foo`);
       await expect(page.getByTestId('foo-title')).toHaveText('Foo');
     });
+
+    test('api hi', async ({ page }) => {
+      await page.goto(`http://localhost:${port}/api/hi`);
+      await expect(page.getByText('hello world!')).toBeVisible();
+    });
+
+    test('api hi.txt', async ({ page }) => {
+      await page.goto(`http://localhost:${port}/api/hi.txt`);
+      await expect(page.getByText('hello from a text file!')).toBeVisible();
+    });
+
+    test('api empty', async ({ page }) => {
+      await page.goto(`http://localhost:${port}/api/empty`);
+      await expect(await page.innerHTML('body')).toBe('');
+    });
+
+    test('not found', async ({ page }) => {
+      await page.goto(`http://localhost:${port}/does-not-exist.txt`);
+      await expect(page.getByText('Not Found')).toBeVisible();
+    });
   });
 }
diff --git a/e2e/fixtures/define-router/private/hi.txt b/e2e/fixtures/define-router/private/hi.txt
new file mode 100644
index 000000000..0ecb6f596
--- /dev/null
+++ b/e2e/fixtures/define-router/private/hi.txt
@@ -0,0 +1 @@
+hello from a text file!
\ No newline at end of file
diff --git a/e2e/fixtures/define-router/src/entries.tsx b/e2e/fixtures/define-router/src/entries.tsx
index 04bb401a0..047aaa2e9 100644
--- a/e2e/fixtures/define-router/src/entries.tsx
+++ b/e2e/fixtures/define-router/src/entries.tsx
@@ -5,6 +5,7 @@ import { Slot, Children } from 'waku/minimal/client';
 import Layout from './routes/layout.js';
 import Page from './routes/page.js';
 import FooPage from './routes/foo/page.js';
+import { readFile } from 'node:fs/promises';
 
 const STATIC_PATHS = ['/', '/foo'];
 const PATH_PAGE: Record<string, ReactNode> = {
@@ -59,6 +60,61 @@ const router: ReturnType<typeof defineRouter> = defineRouter({
       },
     };
   },
+  getApiConfig: async () => [
+    {
+      path: [
+        { type: 'literal', name: 'api' },
+        { type: 'literal', name: 'hi' },
+      ],
+      isStatic: true,
+    },
+    {
+      path: [
+        { type: 'literal', name: 'api' },
+        { type: 'literal', name: 'hi.txt' },
+      ],
+      isStatic: false,
+    },
+    {
+      path: [
+        { type: 'literal', name: 'api' },
+        { type: 'literal', name: 'empty' },
+      ],
+      isStatic: true,
+    },
+  ],
+  handleApi: async (path) => {
+    if (path === '/api/hi.txt') {
+      const hiTxt = await readFile('./private/hi.txt');
+
+      return {
+        status: 200,
+        body: new ReadableStream({
+          start(controller) {
+            controller.enqueue(hiTxt);
+            controller.close();
+          },
+        }),
+      };
+    } else if (path === '/api/hi') {
+      return {
+        status: 200,
+        body: new ReadableStream({
+          start(controller) {
+            controller.enqueue(new TextEncoder().encode('hello world!'));
+            controller.close();
+          },
+        }),
+      };
+    } else if (path === '/api/empty') {
+      return {
+        status: 200,
+      };
+    }
+    return {
+      status: 404,
+    };
+  },
 });
 
 export default router;