diff --git a/README.md b/README.md
index 86ee914..fb3314a 100644
--- a/README.md
+++ b/README.md
@@ -75,12 +75,14 @@ Bypass Cloudflare protection and get cookies/tokens.
 {
   "mode": "iuam",
   "domain": "https://olamovies.watch/generate",
+  "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
 }
 ```
 
 #### Parameters
 - **`mode`** (required): `"iuam"` or `"turnstile"`
 - **`domain`** (required): Target website URL
+- **`user_agent`** (optional): User-Agent to use for the browser session
 - **`proxy`** (optional): Proxy configuration object
 
 #### Response (Success)
diff --git a/index.js b/index.js
index 8d4fc21..176b798 100644
--- a/index.js
+++ b/index.js
@@ -97,6 +97,9 @@ app.post('/cloudflare', async (req, res) => {
   if (!data || typeof data.mode !== 'string') {
     return res.status(400).json({ message: 'Bad Request: missing or invalid mode' })
   }
+  if (data.user_agent && typeof data.user_agent !== 'string') {
+    return res.status(400).json({ message: 'Bad Request: invalid user_agent' })
+  }
   if (authToken && data.authToken !== authToken) {
     return res.status(401).json({ message: 'Unauthorized' })
   }
@@ -126,6 +129,9 @@ app.post('/cloudflare', async (req, res) => {
     page = ctx.page
 
     await page.goto('about:blank')
+    if (data.user_agent) {
+      await page.setUserAgent(data.user_agent)
+    }
 
     switch (data.mode) {
       case "turnstile":
@@ -167,4 +173,4 @@ app.use((req, res) => {
 
 if (process.env.NODE_ENV === 'development') {
   module.exports = app
-}
\ No newline at end of file
+}