diff --git a/plugins/puppetdb/config.d.ts b/plugins/puppetdb/config.d.ts
new file mode 100644
index 0000000000..530f651af7
--- /dev/null
+++ b/plugins/puppetdb/config.d.ts
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Represents the configuration for the Backstage.
+ */
+export interface Config {
+  /**
+   * Configuration of PuppetDB frontend plugin.
+   */
+  puppetdb?: {
+    /**
+     * (Required) The host of PuppetDB API instance.
+     * @visibility frontend
+     */
+    host: string;
+  };
+}