advanced example

Author: stevenbdf

fern/tools/default-tools.mdx

@@ -4,7 +4,7 @@ subtitle: 'Adding Transfer Call, End Call, Dial Keypad, and API Request capabili
 slug: tools/default-tools
 ---
 
-Vapi voice assistants are given additional functions: `transferCall`, `endCall`, `dtmf` (to dial a keypad with [DTMF](https://en.wikipedia.org/wiki/DTMF)), and `apiRequest`. These functions can be used to transfer calls, hang up calls, enter digits on the keypad, and integrate with your existing APIs.
+Vapi voice assistants are given additional functions: `transferCall`, `endCall`, `sms`, `dtmf` (to dial a keypad with [DTMF](https://en.wikipedia.org/wiki/DTMF)), and `apiRequest`. These functions can be used to transfer calls, hang up calls, send SMS messages, enter digits on the keypad, and integrate business logic with your existing APIs.
 
 <Info>
 To add Default Tools to your agent, you need to add them in the `tools` array of your assistant. You can do this in your api request, or by creating a new tool in the dashboard tools page, and assigning it to your assistant.
@@ -258,10 +258,9 @@ Use **LiquidJS syntax** to reference conversation variables and user data in you
     ]
   },
   "backoffPlan": {
-    "initialDelayMs": 1000,
-    "maxDelayMs": 10000,
-    "backoffMultiplier": 2.0,
-    "maxRetries": 3
+    "type": "exponential",
+    "maxRetries": 3,
+    "baseDelaySeconds": 1
   },
   "timeoutSeconds": 45
 }