add readme

packages/server/.env.example

@@ -1 +1,3 @@
 PORT=3000
+# USERNAME=user
+# PASSWORD=1234

packages/server/README.md

@@ -20,6 +20,15 @@ Drag & drop UI to build your customized LLM flow using [LangchainJS](https://git
 
 3. Open [http://localhost:3000](http://localhost:3000)
 
+## 🔒 Authentication
+
+To enable app level authentication, add `USERNAME` and `PASSWORD` to the `.env` file:
+
+```
+USERNAME=user
+PASSWORD=1234
+```
+
 ## 📖 Documentation
 
 Coming Soon

packages/server/src/index.ts

@@ -76,7 +76,7 @@ export class App {
             const basicAuthMiddleware = basicAuth({
                 users: { [username]: password }
             })
-            const whitelistURLs = ['node-icon', 'static', 'favicon']
+            const whitelistURLs = ['static', 'favicon', '/api/v1/prediction/', '/api/v1/node-icon/']
             this.app.use((req, res, next) =>
                 whitelistURLs.some((url) => req.url.includes(url)) || req.url === '/' ? next() : basicAuthMiddleware(req, res, next)
             )