diff --git a/hwe/compare/item_catalog.php b/hwe/compare/item_catalog.php
new file mode 100644
index 00000000..b34ce292
--- /dev/null
+++ b/hwe/compare/item_catalog.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace sammo;
+
+if (PHP_SAPI !== 'cli') {
+    http_response_code(404);
+    exit;
+}
+
+chdir(dirname(__DIR__));
+require_once 'lib.php';
+require_once 'func.php';
+
+$input = stream_get_contents(STDIN);
+$keys = Json::decode($input);
+if (!is_array($keys)) {
+    fwrite(STDERR, "Expected a JSON array of item keys.\n");
+    exit(2);
+}
+
+$result = [];
+foreach ($keys as $key) {
+    if (!is_string($key)) {
+        continue;
+    }
+    $item = buildItemClass($key);
+    $result[$key] = [
+        'rawName' => $item->getRawName(),
+        'name' => $item->getName(),
+        'info' => $item->getInfo(),
+        'cost' => $item->getCost(),
+        'buyable' => $item->isBuyable(),
+        'consumable' => $item->isConsumable(),
+        'reqSecu' => $item->getReqSecu(),
+    ];
+}
+
+echo Json::encode($result);