VAPI

Vapi helps developers build, test, and deploy voice agents at scale. We enable everything in between the raw models and production, including telephony, test suites, and real-time analytics.

Join

VAPI

Vapi helps developers build, test, and deploy voice agents at scale. We enable everything in between the raw models and production, including telephony, test suites, and real-time analytics.

Join

support

faq

exotic-emerald

12/5/2025

call.start.error-get-transport

Hello Please Help ! I am getting issue when I call customers through twillo number the issue : "call.start.error-get-transport" ...

stormy-gold

12/5/2025

Bug report: Custom LLM appends /chat/completions to whatever URL you specify

When using custom LLM implementation, whatever URL you provide will end up as URL + "/chat/completions". VAPI should not alter this URL you should use the URL as is without modification....

sensitive-blue

12/5/2025

call.start.error-get-transport

Hi team, I'm setting up an outbound calling flow with a Twilio phone number connected to VAPI, but every outbound call fails instantly with this error: call.start.error-get-transport...

sensitive-blue

12/5/2025

Webhook not working when I make outbound call.

So I use make to make certain calls outbound and when I do the data from the call doesn’t send to the url in the messaging - server url it used to work but no longer. So I use an https request in make to use vapi to make a call but after a call I never see the webhook or server irk sending the data. Also in the webhook section of vapi it gives me one day and the screen is t scrollable, how can I test when your system won’t give me data anymore, if I make a manual outbound call in your system...

sensitive-blue

12/5/2025

All ORGs disappeared from our account yesterday (17:00 GMT)

We are unable to view any of our orgs in the VAPI dashboard. More importantly we are also unable to make any calls via these orgs. We keep getting "unauthenticated" errors. All fo these ORGs have been making calls up to this point. Some of the ORGs have been in place for more than 6 months without issue. What has happened!? I have emailed support but heard nothing back! This is critical for us.

ambitious-aqua

12/5/2025

Server URL Call-Ended

Configuring my serverURL using a custom webhook via make, but it triggered every second of the call. How do I change this so it only triggers my webhook for the Call-Ended event?

stormy-gold

12/5/2025

Does Custom LLM support streaming?

I'd like to send an initial "working on it" message back to the user, then call our LLM to generate text. Is this possible? It looks liek you have to return the entire response

absent-sapphire

12/5/2025

Urgent: I can't sign in. It's not a wrong password issue

Hello, I need urgent support. When I attempt to login, the CTA keeps loading and resets. I urgently need to access the system, please help. My ID is diat@remoteoffice.io

xenophobic-harlequin

12/4/2025

Delete members

@Servicesrl Please provide your org id and the members to remove

stormy-gold

12/4/2025

What does "Call.in progress.error vapifault worker not available" mean

???

rare-sapphire

12/4/2025

Is there any way to play some holdtime music while vapi agent is waiting for a tool to return data?

Is there any way to play some hold time music so that the customer who is waiting doesnt disconnect since there would be silence while the agent is waiting for the data.

rare-sapphire

12/4/2025

Random weird noise after tool

My callid 019adaf3-c04f-7ff3-a41a-acd5d33b7125 played random weird noise at 4:03 second mark. I noticed the agent had called my make.com webhook which returned fetcherror but why did the agent voice go all haywire? It should be able to still continue conversation ?

fascinating-indigo

12/4/2025

Warm Transfer Issue

I need help with sending a custom “reason” message during a warm transfer using the Transfer Call tool in Vapi. Right now, the warm transfer works only when I hard-code the reason inside the tool itself. Instead, I want the assistant to first ask the caller for the reason, then pass that collected reason to the destination number before connecting the call. Is there a way to dynamically send this custom reason from the assistant to the warm transfer?...

sensitive-blue

12/4/2025

How do you track / improve call quality?

How do you track / improve call quality? We have over 80% fail rate

rising-crimson

12/4/2025

simultaneous outbound calls

Hello Vapi Support Team, I would like to know if there is a native setting in Vapi to: - Limit the number of simultaneous outbound calls (for example, launching calls 3 at a time only),...

modern-teal

12/4/2025

do we need to do any verifications to make outbound calls? like 10k calls?

do i need to do any verifications to make ai outbound calls?

ambitious-aqua

12/4/2025

Very slow and robotic voices

Dear folks, I often have the problem of “very slow and robotic voices” here. After a certain point, the voice becomes completely distorted. there is no clear pattern when this happens. Sometimes 10 calls everyhing is fine and sometimes I have 5 calls in a row where this happens. Model used: GPT5 oder 5.1 Transscriber: Deepgram or AssemblyAI is used as the transcriber. The agents’ language is German. Voices: 11labs or Cartesia...

rival-black

12/4/2025

Issue with VAPI agent constantly saying unable to check calendar and actually book appointments

Hey so I’ve connected my GHl to Vapi, put the 4 tools on to the agent, given the calendar ID from GHl into the calendar tools and put the recommend part of the prompt from the integration support, but anytime my agent calls it constantly says unable to access the calendar or says it’s booked calls at random times but never does, I’m not sure the contact part is working now with no real way to know Here’s some of my call IDs 019ae03b-5e50-7555-be85-12968f76fcfe...

fascinating-indigo

12/4/2025

URGENT: Cant save any workflow with API Request

No matter what, even in a new, otherwise empty workflow it says: Save Failed / Failed to save workflow: each value in nodes.tool.server.cerdentialId must be a UUID. Even working systems i cant save any changes on....

other-emerald

12/4/2025

problems with connecting GHL MCP

I am having problems while connecting the gohighlevel to my vapi dahsboard, it takes me to the marketplace and makes me login to my ghl account then i select the sub-account then redirects me to the same integrations page and still not connected, is there somthing i missed?

Previous Next