Choose WebSockets when:

• Real-time, low-latency updates are critical
• Security is paramount (banking, healthcare, finance)
• You don't want to expose a public endpoint
• You need bidirectional communication

Choose Webhooks when:

• Simpler setup is preferred
• Small number of event notifications
• Existing HTTP infrastructure

Prerequisites

• Server-to-Server OAuth app in Zoom Marketplace
• Account ID, Client ID, and Client Secret
• WebSocket subscription with events enabled

Need help with S2S OAuth? See the zoom-oauth skill for complete authentication flows.

Start troubleshooting fast: Use the 5-Minute Runbook before deep debugging.

Quick Start

1. Create Server-to-Server OAuth App

1. Go to Zoom Marketplace
2. Create a Server-to-Server OAuth app
3. Copy Account ID, Client ID, Client Secret

2. Enable WebSocket Subscription

1. In your app, go to Feature → Event Subscriptions
2. Add an Event Subscription
3. Select WebSockets as the method type
4. Select events to subscribe to (e.g., meeting.created, meeting.started)
5. Save - an endpoint URL will be generated

3. Connect via WebSocket

const WebSocket = require('ws');
const axios = require('axios');

// Step 1: Get access token
async function getAccessToken() {
  const credentials = Buffer.from(`${CLIENT_ID}:${CLIENT_SECRET}`).toString('base64');
  
  const response = await axios.post(
    'https://zoom.us/oauth/token',
    new URLSearchParams({
      grant_type: 'account_credentials',
      account_id: ACCOUNT_ID
    }),
    {
      headers: {
        'Authorization': `Basic ${credentials}`,
        'Content-Type': 'application/x-www-form-urlencoded'
      }
    }
  );
  
  return response.data.access_token;
}

// Step 2: Connect to WebSocket
async function connectWebSocket() {
  const accessToken = await getAccessToken();
  
  // WebSocket URL from your subscription settings
  const wsUrl = `wss://ws.zoom.us/ws?subscriptionId=${SUBSCRIPTION_ID}&access_token=${accessToken}`;
  
  const ws = new WebSocket(wsUrl);
  
  ws.on('open', () => {
    console.log('WebSocket connection established');
  });
  
  ws.on('message', (data) => {
    const event = JSON.parse(data);
    console.log('Event received:', event.event);
    
    // Handle different event types
    switch (event.event) {
      case 'meeting.started':
        console.log(`Meeting started: ${event.payload.object.topic}`);
        break;
      case 'meeting.ended':
        console.log(`Meeting ended: ${event.payload.object.uuid}`);
        break;
      case 'meeting.participant_joined':
        console.log(`Participant joined: ${event.payload.object.participant.user_name}`);
        break;
    }
  });
  
  ws.on('close', (code, reason) => {
    console.log(`Connection closed: ${code} - ${reason}`);
    // Implement reconnection logic
  });
  
  ws.on('error', (error) => {
    console.error('WebSocket error:', error);
  });
  
  return ws;
}

connectWebSocket();

Event Format

Events received via WebSocket have the same format as webhook events:

…

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