BB
09/22/2025, 11:56 AMVapi Support Bot
09/22/2025, 11:57 AM{{customer.number}} in your prompt or message text. For example:
json
{
"firstMessage": "Hello! Your caller ID is {{customer.number}}. How can I help you today?"
}
This will automatically insert the caller's number during the conversation. Make sure to use double curly braces as shown above for the variable to work properly.
Reference: [Vapi Dynamic Variables Documentation](https://docs.vapi.ai/assistants/dynamic-variables#prepare-your-request)
Source:
- [Vapi Dynamic Variables Documentation](https://docs.vapi.ai/assistants/dynamic-variables#prepare-your-request)Chiranjeet Mishra
09/24/2025, 11:57 AM