----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Outbound Calling]() * [Dashboard]() * [Inbound Calling]() * [Introduction]() -----------------------------

### Answer You can indeed control the Vapi voice agent programmatically for both outbound and inbound calls. For inbound calls, you need to follow these key steps: 1. **Create an Assistant**: You can dynamically create an assistant using the API. Define the assistant's properties, such as transcriber, model, voice, and functions [(1)]() . 2. **Programmatically Manage Inbound Calls**: Once the assistant is set up, you can manage inbound calls by attaching the assistant to an inbound phone number. This configuration can also be done via the API, not just through the dashboard . 3. **Control Prompts and Transfers**: To control prompts and transfers via your program, you can use the

assistant-request

and

function-call

endpoints. This allows you to handle interactions and transfer logic dynamically [(2)]() , [(3)]() . To illustrate, here's an example of creating an assistant with a specific configuration programmatically:

json
{
  "transcriber": {
    "provider": "deepgram"
  },
  "model": {
    "provider": "openai",
    "model": "gpt-4",
    "messages": [
      {
        "role": "system",
        "content": "You're a support assistant for Vapi. Help with customer queries."
      }
    ]
  },
  "voice": {
    "provider": "azure",
    "voiceId": "en-US-JennyNeural"
  },
  "firstMessage": "Hello, how can I assist you today?",
  "recordingEnabled": true
}

[(1)]() , [(3)]() For controlling inbound calls: 1. **Set up a phone number**: Either purchase or import a number using the

Phone Numbers

API. 2. **Attach the Assistant**: Dynamically attach the assistant to handle inbound calls using the

assistant-request

endpoint [(1)]() . If you're seeing issues with connecting the inbound calls through Twilio, ensure the correct JSON response structure is being sent back from your server as it might be causing the assistant to not attach properly [(4)]() .

Got it. Tagging @User for additional help.

@Sahil I solved the issue. Thank you "forwardingPhoneNumbers": [ { "number": "+123456789", "message": "Transfer Message" }, { "number": "+123456666", "message": "Transfer Message" } ]