I am having an issue pin pointing the value of the dynamicDestinationTransferCall number. The only place I can see the number within the End-of-call-report is within the Messages > Artifact > Inside one of the collections. Pinpointing this is proving difficult, as there's a different number of messages each time. How can I extract the number the caller was transferred to, within the end-of-call-report. https://cdn.discordapp.com/attachments/1375540638962942015/1375540639491559546/image.png?ex=68320f8c&is=6830be0c&hm=557aa1dca652990b0ab8fba3c3375bd2e399a07151b2601d3b57077ceea33c9f&

To reliably extract the number the caller was transferred to in a Vapi end-of-call report, use the top-level

destination

field, not the nested tool call arguments. For example, in your JSON:

json
"destination": {
  "type": "number",
  "number": "+441925559"
}

This field gives you the actual transfer destination, regardless of how many tool calls or messages are present. Sources: - [Vapi API Reference: Get Call](https://docs.vapi.ai/api-reference/calls/get-call) - [Vapi Dynamic Call Transfers Documentation](https://docs.vapi.ai/calls/call-dynamic-transfers)

There is only one number in the report, but this is dynamically retrieved from a 'getNumber' tool. I can't see an option for 'destination' in the end-of-call-report.

Loop through messages[].toolCalls[].function.arguments.location, and return the first value that starts with + to reliably extract the transferred phone number from the end-of-call report.

To reliably extract the transferred number, make sure your assistant's

serverMessages

include both

"transfer-destination-request"

and

"end-of-call-report"

. Here’s how you can configure it:

json
"serverMessages": [
  "transfer-destination-request",
  "end-of-call-report"
]

This ensures your server receives the necessary events to track dynamic transfers and extract the number from the end-of-call report payload. Reference: [Dynamic Call Transfers documentation](https://docs.vapi.ai/calls/call-dynamic-transfers) Sources: - [Dynamic Call Transfers documentation](https://docs.vapi.ai/calls/call-dynamic-transfers) - [Server Events documentation](https://docs.vapi.ai/server-url/events)

Thanks, got it working. Used an iterator to loop through the arrays until I found the toolcall with the transfer number: https://cdn.discordapp.com/attachments/1375540638962942015/1378721568380686446/image.png?ex=683da205&is=683c5085&hm=7f887396577f10b7cfc8c6293fefb2703e2fcfcbfecbcff1576cda5e7a3fbee9&

Glad it's solved