diff --git a/api/server/methods.ts b/api/server/methods.ts
new file mode 100644
index 000000000..2c103f00f
--- /dev/null
+++ b/api/server/methods.ts
@@ -0,0 +1,21 @@
+import { Meteor } from 'meteor/meteor';
+import {Chats, Messages} from "../collections/whatsapp-collections";
+
+export function initMethods() {
+  Meteor.methods({
+    addMessage(chatId: string, content: string) {
+      const chatExists = !!Chats.collection.find(chatId).count();
+
+      if (!chatExists) throw new Meteor.Error('chat-not-exists',
+        'Chat doesn\'t exist');
+
+      return {
+        messageId: Messages.collection.insert({
+          chatId: chatId,
+          content: content,
+          createdAt: new Date()
+        })
+      }
+    }
+  });
+}