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you need to extract the caller’s phone number from Twilio’s webhook request and forward it to Vapi via the start endpoint or in the call configur
Capture Caller ID in Twilio Webhook:
   - Twilio sends `From` in the webhook request. Example:
     ```
     From: +1000000000
     ```

Forward to Vapi `start` Call API:
   - Include the caller ID in the `userPhoneNumber` or `metadata` field:
   ```json
   {
     "assistantId": "your_assistant_id",
     "userPhoneNumber": "+18000000000",
     "metadata": {
       "callerId": "+18000000000"
     }
   }
   ```

3. *Use in Assistant Logic (optional):*
   - Inside Vapi, use `callerId` from metadata to personalize or log the interaction.