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Start and Stop Streaming API Connection

Start Connection#

Use this code to start a connection to the Streaming API using Javascript WebSockets. This example uses both the Symbl's Javascript SDK, which is meant to be run using Node.js, and native Javascript which can be run in the browser:

const {sdk} = require('symbl-node');
const uuid = require('uuid').v4;
(async () => {
try {
// Initialize the SDK
await sdk.init({
appId: appId,
appSecret: appSecret,
basePath: '',
// Need unique Id
const id = uuid()
// Start Real-time Request (Uses Real-time WebSocket API behind the scenes)
const connection = await sdk.startRealtimeRequest({
insightTypes: ['action_item', 'question'],
config: {
meetingTitle: 'My Test Meeting',
confidenceThreshold: 0.7,
timezoneOffset: 480, // Offset in minutes from UTC
languageCode: 'en-US',
sampleRateHertz: 44100,
speaker: {
// Optional, if not specified, will simply not send an email in the end.
userId: 'emailAddress', // Update with valid email
name: 'My name'
handlers: {
* This will return live speech-to-text transcription of the call.
onSpeechDetected: (data) => {
if (data) {
const {punctuated} = data
console.log('Live: ', punctuated && punctuated.transcript)
* When processed messages are available, this callback will be called.
onMessageResponse: (data) => {
console.log('onMessageResponse', JSON.stringify(data, null, 2))
* When Symbl detects an insight, this callback will be called.
onInsightResponse: (data) => {
console.log('onInsightResponse', JSON.stringify(data, null, 2))
* When Symbl detects a topic, this callback will be called.
onTopicResponse: (data) => {
console.log('onTopicResponse', JSON.stringify(data, null, 2))
} catch (e) {


Create a javascript file named app.js and copy this code into the file. Fill in the placeholder values with the proper values. Use npm to install the required libraries: npm install symbl-node uuid. Now in the terminal run

$ node app.js

If successful you should receive a response in the console.

Stop Connection#

Once the connection is established you can stop the connection with this snippet:

"type": "stop_request"