VAPI•3d ago

Vapi Phone Number Provisioning via API Failing

Hi, I've been attempting to provision phone numbers with Vapi as the provider via the API.

I noticed that the operation shows as successful in the API response, but the number is not created (shows as 'Untitled Phone Number' in the dashboard list).

brilliant-orangeOP•12/18/25, 10:47 PM

The dropdown for technical details doesn't drop down so unfortunately this is all I have

Vapi Support BotAPP•12/18/25, 10:47 PM

To ensure your phone number is created with a proper name, try including the "name" field in your API request payload. Here’s an example using cURL:

curl -X POST https://api.vapi.ai/phone-number \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "provider": "vapi-phone-number",
    "credentialId": "<your_credential_id>",
    "name": "My Test Number"
  }'

curl -X POST https://api.vapi.ai/phone-number \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "provider": "vapi-phone-number",
    "credentialId": "<your_credential_id>",
    "name": "My Test Number"
  }'

Make sure to replace <token><token> and <your_credential_id><your_credential_id> with your actual values. This should help avoid the "Untitled Phone Number" issue in the dashboard. For more details, see the API reference.

Source:

API Reference: Create Phone Number

⤵️ Mention @Vapi Support Bot for follow-ups 🐥

VVapi Support Bot To ensure your phone number is created with a proper name, try including the "na...

DuckieAPP•12/18/25, 10:48 PM

Message marked as helpful by @mellmango!

brilliant-orangeOP•12/18/25, 10:51 PM

Two things: 1) is 'vapi' the provider name (as shown in the docs) or 'vapi-phone-number', 2) what is the credential if not the bearer & api in the authorization bearer, it seems to me that the credential field would be for non-vapi providers

brilliant-orangeOP•12/18/25, 10:57 PM

The API request sample above does not work.
[

{

"id":
"real-value",

"orgId":
"real-value",

"createdAt":
"2025-12-18T22:54:39.775Z",

"updatedAt":
"2025-12-18T22:54:39.775Z",

"name":
"tech-repair-hub",

"provider":
"vapi",

"status":
"active"

}
]

this is the api response that I get when I use 'vapi' as the provider name and remove the credential field while adding the name. I still get the error message in the dashboard.

VVapi Support Bot To ensure your phone number is created with a proper name, try including the "na...

DuckieAPP•12/18/25, 10:58 PM

Message marked as helpful by @mellmango!

curl -X POST https://api.vapi.ai/phone-number \ -H "Authorization: Bearer <token>" \ -H "Content-Type: application/json" \ -d '{ "provider": "vapi-phone-number", "credentialId": "<your_credential_id>", "name": "My Test Number" }'

Vapi Phone Number Provisioning via API Failing

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