diff --git a/api/README.md b/api/README.md
index 03d41ca..e418cd4 100644
--- a/api/README.md
+++ b/api/README.md
@@ -1,6 +1,8 @@
 # file demo api
 This folder contains a sample implementation to document the minimal API that is necessary to support the local file browser component.
 
+This example is a simple [Express.js](https://expressjs.com/) server which gives methods to expose the HOME_DIR on your machine to the web.  
+
 ## Build
 ```bash
 npm install