I'm trying to have my agent professionally wrap up the call once its reaching its time limit. In my call logs I can see that new system messages are being added through .send() successfully but they seem to have no effect on the model output at all. https://cdn.discordapp.com/attachments/1348419796177256538/1348419796429176924/image.png?ex=67cf654b&is=67ce13cb&hm=5984f5b0927c8b17db340a18ab8d5f36b2506d84096f1ec08f7668e634e6fa60& https://cdn.discordapp.com/attachments/1348419796177256538/1348419796726976625/image.png?ex=67cf654b&is=67ce13cb&hm=2b4f6b8c099099506640df6f29b72e5f0ec807b76b49161ad67db4451102eb9d&

I see the issue you're experiencing with system messages not affecting your agent's behavior. Based on the documentation, there are a couple of key points to address: 1. **System Message Configuration**: When using

.send()

with system messages, you need to ensure the

triggerResponseEnabled

flag is set to

true

(which is the default). If it's set to

false

, the message will be added to the context but won't trigger a response from the AI assistant.

javascript
vapi.send({
  type: 'add-message',
  message: {
    role: 'system',
    content: 'There is 1 minute remaining. End the call professionally...'
  },
  triggerResponseEnabled: true  // Make sure this is true
});

2. **End Call Implementation**: For professionally ending calls, you have a few options: a) Use the

say

method with `endCallAfterSpoken`:

javascript
   vapi.say("Thank you for trying our demo. To build your own AI agent, please create an account!", true);

b) Send a message followed by an end-call command:

javascript
   // First send closing remarks
   vapi.send({
     type: "add-message",
     message: {
       role: "assistant",
       content: "Thank you for your time and for trying the demo..."
     },
     triggerResponseEnabled: true
   });
   
   // Then end the call (with a slight delay if needed)
   setTimeout(() => {
     vapi.send({
       type: "end-call"
     });
   }, 2000);

3. **Ensure

endCall

tool is configured**: Make sure the

endCall

tool is included in your assistant's configuration:

json
   {
     "model": {
       "provider": "openai",
       "model": "gpt-3.5-turbo",
       "tools": [
         {
           "type": "endCall"
         }
       ]
     }
   }

@Vapi Support Bot "message": "Object literal may only specify known properties, and 'triggerResponseEnabled' does not exist in type 'AddMessageMessage'.",

Hey! To help track down this issue, could you share: - The call ID This would really help us figure out what went wrong!

@nearLucid Were you able to resolve this issue? I'm also trying to implement the same feature for wrapping up the call once its reaches the time limit (this can be dynamic in my use case)

Yes DM me

@nearLucid ^

i tested a bit with the different roles you can throw in and assistant is the only one that works

@nearLucid do you have some sample code snippet/demo that you can share?

sorry, cant share specific code but vapi uses daily.js so you should def look at their documentation for how to listen to the audio stream

@nearLucid This helped but if I ask the agent to start the call again, then it forgets the time limit instruction and starts the call all over.

@godlike Just want you to check your current progress and if you could share the call ID, I can track down what exactly you're trying to get done and how it's going for you.

@Shubham Bajaj

aa929ab9-e91a-4bf7-b17a-0db02355b6c5

Hey, can you share the code snippet on how you're sending the messages? Looking at the logs, I can see that most of the messages are empty and eventually get ignored. 🔵 17:07:53:293 Live Call Manager Control Message Received But Empty. Ignoring... {}