- [Discord Thread about credentialId](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1341469652366266408) - [Vapi API Reference Phone Numbers Create](https://docs.vapi.ai/api-reference/phone-numbers/create#response.body.telnyx.credentialId)

Hi there! 👋 I understand you're looking for information about the

credentialId

when creating a phone number in Vapi. While I can't see exactly where to find it in the dashboard interface, I can definitely explain what it is and how it's typically obtained. The

credentialId

is an identifier for authentication credentials used when creating a phone number in Vapi. According to the [documentation](https://docs.vapi.ai/api-reference/phone-numbers/create#response.body.telnyx.credentialId), it's used to configure the number for sending inbound calls to Vapi, making outbound calls, and performing live call updates like transfers and hangups. Here's what I found about how the

credentialId

relates to the API key: 1. The API key is used for authentication when creating credentials in Vapi. When you make API calls to create credentials, you include your API key in the

Authorization

header. 2. The

credentialId

is generated when you create a credential via the API. According to the information I found, when you create a credential using the

/credential

endpoint, the response includes an

id

field, which is the

credentialId

you need:

json
{
  "id": "credential_id",
  "provider": "byo-sip-trunk",
  "name": "My SIP Trunk",
  ...
}

3. For Telnyx specifically, you would create a SIP Trunk Credential using a curl command like:

curl -X POST https://api.vapi.ai/credential \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer your-vapi-private-api-key" \
  -d '{
    "provider": "byo-sip-trunk",
    "name": "Telnyx Trunk",
    "gateways": [
      {
        "ip": "sip.telnyx.com"
      }
    ]
  }'

The response from this API call will contain the

credentialId

that you'll need when creating a phone number. Is there anything else you'd like to know about using credentials in Vapi? Sources: - [Documentation on credentialId](https://docs.vapi.ai/api-reference/phone-numbers/create#response.body.telnyx.credentialId)

- [Information on creating SIP Trunk Credentials](https://docs.vapi.ai/advanced/sip/telnyx) - [Discord thread on BYO SIP Trunk credentials](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1341469652366266408)

@Vapi Support Bot I think you're wrong, the API request says: "credentialId must be a UUID". So the credential is not my api key

Hi there! 👋 You're absolutely right, and I apologize for any confusion in my previous responses. The

credentialId

is not the same as your API key, and yes, the API request correctly states that "credentialId must be a UUID." Let me clarify: - The API key is what you use to authenticate your requests to the Vapi API - The

credentialId

is a separate UUID that's generated when you create a credential using the

/credential

endpoint According to the [information I found](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1326262542858850445), the

credentialId

must be a UUID. In Vapi, UUIDs are used as unique identifiers for various entities including assistants, organizations, and credentials. When you create a credential via the API (using your API key for authentication), the response includes an

id

field which is the

credentialId

you need. This

credentialId

is then used when creating a phone number to associate that phone number with the specific credential you created. The workflow is: 1. Use your API key to authenticate and create a credential 2. Get the

credentialId

(UUID) from the response 3. Use that

credentialId

when creating a phone number Is there anything else you'd like me to clarify about how credentials and UUIDs work in Vapi? Sources: - [Discord thread about credentialId being a UUID](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1326262542858850445) - [Information about UUIDs in Vapi](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1328923059905630238) - [Discord thread about creating credentials](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1341469652366266408)

I understand your frustration and I apologize for the confusion. You're right to point out the discrepancy between what the documentation says and what you're experiencing. I've escalated this issue to our technical team for clarification on how to obtain the

credentialId

from the providers keys page in the dashboard. The documentation does state that "This is the credential you added in dashboard.vapi.ai/keys," but I couldn't find specific information about how to locate or generate the

credentialId

from that page. There seems to be a gap between the documentation and the actual implementation, and we need to get this resolved for you. Our team will investigate whether this is a documentation error or if there's a specific way to access the

credentialId

from the dashboard that isn't immediately obvious. I'll make sure you get a clear answer on this issue. Thank you for bringing this to our attention and for your patience while we sort this out.

Doesnt' look like it