Exactly same as this https://discord.com/channels/1211482211119796234/1280702984191217724 But as stated in this comment on that thread https://discord.com/channels/1211482211119796234/1280702984191217724/1281670465592627270, this is a known issue and a fix is expected. Is this not patched yet?

@Samesh I'm here to help! If you're referring to a known issue with VAPI, I would need to check the latest updates or patch notes to provide you with accurate information. Unfortunately, I don't have access to external links like Discord, but I can certainly help you with any questions or issues you might have with VAPI. If you're experiencing a problem, could you please describe it in detail? If there's a fix available, I'll guide you through it or provide you with the necessary steps to resolve the issue.

@Shubham Bajaj can i have an update on this issue pls? thanks

can you share the recent call id.

@Shubham Bajaj this is the call id

919ba550-efd8-4ad1-ab66-afbfd08a0864

You can check the call recording / transcripts, the assistant visibly stops (pause of 1 sec) after everytime I try sending a background message (role: system).

I don't understand how this will fix my issue. a) The first step of the call control api is to send a POST request to

/call

which requires a phone number? But I am only want to use the web call (no phone calls) b) Is this step required? Because I am using the vapi npm library(web SDK) and I start the call from that so I am not sure how I would continue the call (through the SDK) even after the POST request to

/call

endpoint. So, I want to understand how can I retrieve the

controlUrl

of a call if I start it through the web SDK (

.start()

method)? Does that method return this data? c) I understand that you probably imply me to use the call control API as given in this example (https://docs.vapi.ai/calls/call-features#example-injecting-a-message). Is the expected format for the query to inject background similar like so:

curl -X POST 'https://aws-us-west-2-production1-phone-call-websocket.vapi.ai/7420f27a-30fd-4f49-a995-5549ae7cc00d/control' 
-H 'content-type: application/json' 
--data-raw '{
  type: "add-message",
  message: {
    role: "system",
    content: "The user has pressed the button, say peanuts",
  },
}'

? d) And if this format is correct, how is call control API different from the web SDK's

.send()

method https://docs.vapi.ai/assistants/background-messages#scenario-overview used in background messaging ? Does that mean that the background messaging is not currently working right now?

This is a temp solution for now not the exact fix.

Cool, appreciate the quick reply. Let me test this and reply back here.

This will only work when the call is active.

The call was indeed active when I did it

Let me check with the team once.

Yes pls

will inform you by tomorrow

sounds good

Yes, talked to nikhil he told me that it is working properly.

Cool, let me try this again and send you the stackblitz link

This uses web snippet

@Sahil @Samesh I am also experiencing the job not found 404 error during the call for curl post request: curl -X POST 'https://aws-us-west-2-production1-phone-call-websocket.vapi.ai/7420f27a-30fd-4f49-a995-5549ae7cc00d/control' -H 'content-type: application/json' --data-raw '{ "type": "say", "message": "Welcome to Vapi, this message was injected during the call." }'

But didn't you just suggest me to use the live control url as a temporary solution because the

.send()

isn't working?

.send() actually works, for websdk but it will only be background messaging. @Samesh Did u experience curl post aws/*****/control url and received 404 job not found problem?

@ZigzagToYou#0504 a) Does

.send()

actually work as intended tho, i.e, sending background messages? Because if I send a message with

type

as

system

or

assistant

, that interrupts my assistant every time. The ideal way I assume this should work is that it just adds whatever I send to the context of the conversation without the assistant even stopping the flow of the whatever it was speaking. Currently, it always stops the assistant for atleast 1 sec. b) Yes. I am experiencing 404 job not found problem as you have stated. @Sahil can you pls check this again? Looks like live call control isn't working as stated in the docs. Can you pls check with the team and give a complete solution? Thanks!

I confirmed with nikhil about this whether it is working or not. He mentioned that it is working correctly

Okay. Sharing the stackblitz example in 15

@Samesh I am also having problem with the vapi.send(), My speech did glitch a lot during the call and it is sending multiple background message during the call, but i guessed the problem might comes from the speech update side. Also I am wondering if the listen url is working as desired since control isn't working for me during the call? "listenUrl": "wss://aws-us-west-2-production1-phone-call-websocket.vapi.ai/7420f27a-30fd-4f49-a995-5549ae7cc00d/transport" from live call control. I was trying to send the live audio to my server. https://cdn.discordapp.com/attachments/1287280603485442111/1288770193149001728/Screenshot_2024-09-25_at_3.23.13_PM.png?ex=66f66446&is=66f512c6&hm=168ca4d5291d8b283906282a3733177c82b648543716d973add2b30d0d35217d& https://cdn.discordapp.com/attachments/1287280603485442111/1288770193472098314/Screenshot_2024-09-26_at_12.45.53_AM.png?ex=66f66446&is=66f512c6&hm=92e9b080caaf62c2a5bd62970cde40da975bab57d335143d38b409a7ace199c8&

Here's the stackblitz URL @Sahil. https://stackblitz.com/edit/stackblitz-starters-kans4u?file=index.html To test it: a) Start the call with "Start vapi" button b) Press the "Log action" button to send background messages through the

.send()

API. You will observe that the assistant ALWAYS stutters & then restarts what it was already going to say when you send that background update (the update is successful because you can check that in the transcripts). Lmk how I can help you better because I want to get this issue resolved ASAP, it's already taken too long for my company. TIA

@Samesh May i use this example too?

Sure

@Samesh does the controlurl post request actually work?

No, it doesn't. I am getting

job not found

error. That's just there to help @Sahil and team debug

Got it Thanks!

vapiInstance.send({ type: 'say', content: 'The user has pressed the button, say peanuts' });

@Sahil What about the Call listen feature? Will that work? https://docs.vapi.ai/calls/call-features#call-listen-feature i mean for the live call listening feature.

@Sahil this is extremely frustrating now. Do you even understand what my problem is? Can you read the title of this issue or our whole thread? It's astonishing how you just expect me to send you the stackblitz link every time but when I do send it and explain you the problem, you are unable to just acknowledge if something is working or not working as expected. You have wasted my time by suggesting me to use the call control feature but when I (and @ZigzagToYou#0504) that it isn't working you just redirected me back to using the

.send()

feature which wasn't working before too. I want to use Background Messaging!! I want to silently insert a system message into the chat history, not make the assistant speak it! Can you please connect me to someone else from the team? We were considering to upgrade to enterprise plan at Vapi if our POC works, but if this is the kind of support I am going to get, I don't think I want to anymore.

@Samesh Sorry for the inconvenience. We acknowledge that this is a bug where there is a delay or the voice restarts playing whenever a background message is sent. We will add it to our to-do list, and we will work on it. Unfortunately, we won't be able to provide you with any ETA as we are a small team and have a lot of feature requests that we need to complete.

That's totally alright. So, there are no alternative solutions to send background messages also right? The live call control also isn't working