Finish putting permissions on the API

app/Http/Requests/API/Admin/Nodes/GetNodeRequest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Pterodactyl\Http\Requests\API\Admin\Nodes;
+
+use Pterodactyl\Models\Node;
+use Pterodactyl\Http\Requests\API\Admin\ApiAdminRequest;
+
+class GetNodeRequest extends ApiAdminRequest
+{
+    /**
+     * Determine if the requested node exists on the Panel.
+     *
+     * @return bool
+     */
+    public function resourceExists(): bool
+    {
+        $node = $this->route()->parameter('node');
+
+        return $node instanceof Node && $node->exists;
+    }
+}