> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sellagent.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Outbound Calls

> A Step-by-step guide to making outbound phone calls using **Sell Agent** imported numbers.

Before you begin, ensure you've already purchased and imported phone numbers from Twilio by following the previous setup guides.

## 🔗 Bind Voice Agents

To enable calling, you **must bind a voice agent to the number**.\
Without an assigned agent, the number cannot make or receive calls.

* You can assign different agents for **inbound** and **outbound** calls.
* To disable inbound or outbound:

  * Leave `inboundAgentId` or `outboundAgentId` unset.
  * Example: If you only want to make calls but not receive callbacks, leave `inboundAgentId` unset.

    <img src="https://mintcdn.com/sellagent-f6a60d80/xwxOjUZ1cjk-9QCV/images/agent-assigned.png?fit=max&auto=format&n=xwxOjUZ1cjk-9QCV&q=85&s=e7dc884c6b55c1662f807dfcdfbed20c" alt="Agent Assigned" width="854" height="287" data-path="images/agent-assigned.png" />

  Once an inbound agent is assigned, inbound calls will begin working automatically.

## ☎️ Make Outbound Call

You can initiate outbound calls using the ****[Create Phone Number API](/api-reference/phone/create)**** or all the parameters you can use.

* `phoneId` : The internal ID of the phone number you imported or purchased and registered in **Sell Agent**.
* `phoneNumber` : The destination number you want to call, in E.164 format (e.g., +12135551234).
* `agentId` : The ID of the AI agent that should handle the call. This is the agent that will speak on the call.

<Tabs>
  <Tab title="Node.js">
    ```js theme={null}
    const options = {
      method: 'POST',
      headers: {
        'x-api-key': '<x-api-key>',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        phoneId: "<string>",
        phoneNumber: "+14155551234",
        agentId: "<string>"
      })
    };

    fetch('https://server.sellagent.ai/api/phone/createCall', options)
      .then(response => response.json())
      .then(response => console.log(response))
      .catch(err => console.error(err));
    ```
  </Tab>

  <Tab title="Python">
    ```python theme={null}
    import requests

    url = "https://server.sellagent.ai/api/phone/createCall"

    payload = {
        "phoneId": "<string>",
        "phoneNumber": "+14155551234",
        "agentId": "<string>"
    }
    headers = {
        "x-api-key": "<x-api-key>",
        "Content-Type": "application/json"
    }

    response = requests.post(url, json=payload, headers=headers)

    print(response.text)
    ```
  </Tab>
</Tabs>

## 🔄 Add Webhook for Post-call Events

You can optionally set a `webhookURL` in your agent configuration. This webhook is triggered **after each call ends**, sending the full call transcript and other metadata to your server.

### 🛠️ Option 1: Programmatically

Set the webhook when creating or updating the agent:

```json theme={null}
"webhookURL": "https://example.com/webhook"
```

### ⚙️ Option 2: Through Agent Settings UI

You can also configure the webhook directly in the dashboard under Agent Settings:

<img src="https://mintcdn.com/sellagent-f6a60d80/xwxOjUZ1cjk-9QCV/images/agent-webhook.png?fit=max&auto=format&n=xwxOjUZ1cjk-9QCV&q=85&s=a5337b5b9e2147f1509e30df8461c0d2" alt="Agent Webhook" width="313" height="189" data-path="images/agent-webhook.png" />

Once configured, Sell Agent will send a POST request to your webhook after every inbound or outbound call, including transcript, duration, result, and more.
To see the full list of available agent parameters, check the ****[Update Agent API](/api-reference/agent/update)****.