The Interactions Protocol lets you control and customize live conversations with a Replica in real time. You can send interaction events to the Conversational Video Interface (CVI) and listen to events the Replica sends back during the call.

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Interaction Types

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Observable Events

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Call Client Example

The interactions protocol uses a WebRTC data channel for communication. In Tavus’s case, this is powered by Daily, which makes setting up the call client quick and simple.
Here’s an example of using DailyJS to create a call client in JavaScript:
The Daily app-message event is used to send and receive events and interactions between your server and CVI.
<html>
  <script crossorigin src="https://unpkg.com/@daily-co/daily-js"></script>
  <body>
    <!-- Add input field and send button -->
    <input type="text" id="messageInput" placeholder="Enter your message">
    <button onclick="sendAppMessage()">Send Message</button>

    <script>
      call = window.Daily.createFrame();
      call.on('app-message', (event) => {
        console.log('app-message', event);
      });
      
      call.join({ url: 'YOUR_CONVERSATION_URL' });

      function sendAppMessage() {
        const messageInput = document.getElementById('messageInput');
        const message = messageInput.value;
        if (message) {
          const interaction = {
            "message_type": "conversation",
            "event_type": "conversation.echo",
            "conversation_id": "YOUR_CONVERSATION_ID",
            "properties": {
              "text": `${message}`
            }
          }
          const hi = call.sendAppMessage(interaction, '*');
          console.log('Sending message: ', hi);
          console.log('Sent message: ', interaction);
          messageInput.value = '';
        }
      }
    </script>
  </body>
</html>