added reference

Author: ramsrib

fern/tools/custom-tools.mdx

@@ -101,15 +101,6 @@ When your server receives a tool call request from Vapi, it will be in the follo
     "message": {
         "timestamp": 1678901234567,
         "type": "tool-calls",
-        "toolCalls": [
-            {
-                "id": "toolu_01DTPAzUm5Gk3zxrpJ969oMF",
-                "name": "get_weather",
-                "arguments": {
-                    "location": "San Francisco"
-                }
-            }
-        ],
         "toolCallList": [
             {
                 "id": "toolu_01DTPAzUm5Gk3zxrpJ969oMF",
@@ -169,6 +160,11 @@ When your server receives a tool call request from Vapi, it will be in the follo
 }
 ```
 
+<Note>
+For the complete API reference, see [ServerMessageToolCalls Type Definition](https://github.com/VapiAI/server-sdk-typescript/blob/main/src/api/types/ServerMessageToolCalls.ts#L7).
+</Note>
+
+
 ## Server Response Format: Providing Results and Context
 
 When your Vapi assistant calls a tool (via the server URL you configured), your server will receive an HTTP request containing information about the tool call. Upon processing the request and executing the desired function, your server needs to send back a response in the following JSON format: