diff --git a/packages/ep_products/Classes/Middleware/ApiMiddleware.php b/packages/ep_products/Classes/Middleware/ApiMiddleware.php
index 86d847d..1344d8a 100644
--- a/packages/ep_products/Classes/Middleware/ApiMiddleware.php
+++ b/packages/ep_products/Classes/Middleware/ApiMiddleware.php
@@ -43,6 +43,10 @@ class ApiMiddleware implements MiddlewareInterface
             return $this->handleProductRequest($request);
         }
 
+        if ('/api/calendar-hotels' === $path) {
+            return $this->handleCalendarHotelsRequest($request);
+        }
+
         if (str_starts_with($path, ContentFeedApi::PATH_PREFIX)) {
             return $this->contentFeedApi->handle($request);
         }
@@ -97,6 +101,51 @@ class ApiMiddleware implements MiddlewareInterface
         return new JsonResponse($data);
     }
 
+    /**
+     * The calendar hotels of all visible products, for the contingent sync of MyE&P: their
+     * availability is needed for the iCal feed and the availability calendar, whether or not
+     * MyE&P has an accommodation with prices for them.
+     */
+    private function handleCalendarHotelsRequest(ServerRequestInterface $request): ResponseInterface
+    {
+        if (!$this->authenticator->isAuthorized($request)) {
+            return new JsonResponse(['message' => 'Invalid or missing api key'], 403);
+        }
+
+        $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
+            ->getQueryBuilderForTable('tx_epproducts_domain_model_product');
+
+        $rows = $queryBuilder
+            ->select('hotel.code', 'hotel.name AS hotelName', 'product.uid', 'product.name', 'product.season')
+            ->from('tx_epproducts_domain_model_product', 'product')
+            ->join('product', 'tx_epproducts_domain_model_hotel', 'hotel', 'hotel.uid = product.calendar_hotel')
+            ->where(
+                $queryBuilder->expr()->eq('product.sys_language_uid', 0),
+                $queryBuilder->expr()->neq('hotel.code', $queryBuilder->createNamedParameter('')),
+            )
+            ->orderBy('hotel.code')
+            ->addOrderBy('product.uid')
+            ->executeQuery()
+            ->fetchAllAssociative();
+
+        $hotels = [];
+        foreach ($rows as $row) {
+            $code = trim((string)$row['code']);
+            $hotels[$code] ??= [
+                'code' => $code,
+                'name' => trim((string)preg_replace('/\s+/', ' ', (string)$row['hotelName'])),
+                'products' => [],
+            ];
+            $hotels[$code]['products'][] = [
+                'uid' => (int)$row['uid'],
+                'name' => trim((string)preg_replace('/\s+/', ' ', (string)$row['name'])),
+                'season' => '' !== (string)$row['season'] ? (string)$row['season'] : null,
+            ];
+        }
+
+        return new JsonResponse(array_values($hotels));
+    }
+
     private function fetchProductData(string $productCode): ?array
     {
         $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)