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    JS / Browser Client - Build Activity Feeds & Streams with
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    stream-js is the official JavaScript client for Stream, a web service for building scalable newsfeeds and activity streams.

    Note that there is also a higher level Node integration which hooks into your ORM.

    You can sign up for a Stream account at


    Install from NPM/YARN

    npm install getstream

    or if you are using yarn

    yarn install getstream

    Using JS deliver

    <script src=""></script>

    :warning: This will pull the latest which can be breaking for your application. Always pin a specific version as follows:

    <script src=""></script>

    Install by downloading the JS file

    JS / Minified JS

    :warning: Beware about the version you're pulling. It's the latest by default which can break your app anytime.

    Full documentation

    Documentation for this JavaScript client are available at the Stream website.

    Using with React Native

    This package can be integrated into React Native applications. Remember to not expose the App Secret in browsers, "native" mobile apps, or other non-trusted environments.


    API client setup Node

    import { connect } from 'getstream';
    // or if you are on commonjs
    const { connect } = require('getstream');
    // Instantiate a new client (server side)
    const client = connect('YOUR_API_KEY', 'API_KEY_SECRET');
    // Optionally supply the app identifier and an options object specifying the data center to use and timeout for requests (15s)
    const client = connect('YOUR_API_KEY', 'API_KEY_SECRET', 'APP_ID', { location: 'us-east', timeout: 15000 });

    API client setup Node + Browser

    If you want to use the API client directly on your web/mobile app you need to generate a user token server-side and pass it.

    Server-side token generation

    import { connect } from 'getstream';
    // or if you are on commonjs
    const { connect } = require('getstream');
    // Instantiate a new client (server side)
    const client = stream.connect('YOUR_API_KEY', 'API_KEY_SECRET');
    // Optionally supply the app identifier and an options object specifying the data center to use and timeout for requests (15s)
    const client = stream.connect('YOUR_API_KEY', 'API_KEY_SECRET', 'APP_ID', { location: 'us-east', timeout: 15000 });
    // Create a token for user with id "the-user-id"
    const userToken = client.createUserToken('the-user-id');

    Client API init

    import { connect } from 'getstream';
    // or if you are on commonjs
    const { connect } = require('getstream');
    // Instantiate new client with a user token
    const client = stream.connect('apikey', userToken, 'appid');


    // Instantiate a feed object server side
    user1 = client.feed('user', '1');
    // Get activities from 5 to 10 (slow pagination)
    user1.get({ limit: 5, offset: 5 });
    // Filter on an id less than a given UUID
    user1.get({ limit: 5, id_lt: 'e561de8f-00f1-11e4-b400-0cc47a024be0' });
    // All API calls are performed asynchronous and return a Promise object
      .get({ limit: 5, id_lt: 'e561de8f-00f1-11e4-b400-0cc47a024be0' })
      .then(function (body) {
        /* on success */
      .catch(function (reason) {
        /* on failure, reason.error contains an explanation */
    // Create a new activity
    activity = { actor: 1, verb: 'tweet', object: 1, foreign_id: 'tweet:1' };
    // Create a bit more complex activity
    activity = {
      actor: 1,
      verb: 'run',
      object: 1,
      foreign_id: 'run:1',
      course: { name: 'Golden Gate park', distance: 10 },
      participants: ['Thierry', 'Tommaso'],
      started_at: new Date(),
    // Remove an activity by its id
    // or remove by the foreign id
    user1.removeActivity({ foreignId: 'tweet:1' });
    // mark a notification feed as read
    notification1 = client.feed('notification', '1');
    params = { mark_read: true };
    // mark a notification feed as seen
    params = { mark_seen: true };
    // Follow another feed
    user1.follow('flat', '42');
    // Stop following another feed
    user1.unfollow('flat', '42');
    // Stop following another feed while keeping previously published activities
    // from that feed
    user1.unfollow('flat', '42', { keepHistory: true });
    // Follow another feed without copying the history
    user1.follow('flat', '42', { limit: 0 });
    // List followers, following
    user1.followers({ limit: '10', offset: '10' });
    user1.following({ limit: '10', offset: '0' });
    user1.follow('flat', '42');
    // adding multiple activities
    activities = [
      { actor: 1, verb: 'tweet', object: 1 },
      { actor: 2, verb: 'tweet', object: 3 },
    // specifying additional feeds to push the activity to using the to param
    // especially useful for notification style feeds
    to = ['user:2', 'user:3'];
    activity = {
      to: to,
      actor: 1,
      verb: 'tweet',
      object: 1,
      foreign_id: 'tweet:1',
    // adding one activity to multiple feeds
    feeds = ['flat:1', 'flat:2', 'flat:3', 'flat:4'];
    activity = {
      actor: 'User:2',
      verb: 'pin',
      object: 'Place:42',
      target: 'Board:1',
    // ⚠️ server-side only!
    client.addToMany(activity, feeds);
    // Batch create follow relations (let flat:1 follow user:1, user:2 and user:3 feeds in one single request)
    follows = [
      { source: 'flat:1', target: 'user:1' },
      { source: 'flat:1', target: 'user:2' },
      { source: 'flat:1', target: 'user:3' },
    // ⚠️ server-side only!
    // Updating parts of an activity
    set = {
      'product.price': 19.99,
      shares: {
        facebook: '...',
        twitter: '...',
    unset = ['daily_likes', 'popularity'];
    // ID
      id: '54a60c1e-4ee3-494b-a1e3-50c06acb5ed4',
      set: set,
      unset: unset,
    // ...or by combination of foreign ID and time
      foreignID: 'product:123',
      time: '2016-11-10T13:20:00.000000',
      set: set,
      unset: unset,
    // ⚠️ server-side only!
    // Create redirect urls
    impression = {
      content_list: ['tweet:1', 'tweet:2', 'tweet:3'],
      user_data: 'tommaso',
      location: 'email',
      feed_id: 'user:global',
    engagement = {
      content: 'tweet:2',
      label: 'click',
      position: 1,
      user_data: 'tommaso',
      location: 'email',
      feed_id: 'user:global',
    events = [impression, engagement];
    redirectUrl = client.createRedirectUrl('', 'user_id', events);
    // update the 'to' fields on an existing activity
    // client.feed("user", "ken").function (foreign_id, timestamp, new_targets, added_targets, removed_targets)
    // new_targets, added_targets, and removed_targets are all arrays of feed IDs
    // either provide only the `new_targets` parameter (will replace all targets on the activity),
    // OR provide the added_targets and removed_targets parameters
    // NOTE - the updateActivityToTargets method is not intended to be used in a browser environment.
    client.feed('user', 'ken').updateActivityToTargets('foreign_id:1234', timestamp, ['feed:1234']);
    client.feed('user', 'ken').updateActivityToTargets('foreign_id:1234', timestamp, null, ['feed:1234']);
    client.feed('user', 'ken').updateActivityToTargets('foreign_id:1234', timestamp, null, null, ['feed:1234']);

    Realtime (Faye)

    Stream uses Faye for realtime notifications. Below is quick guide to subscribing to feed changes

    const { connect } = require('getstream');
    // ⚠️ userToken is generated server-side (see previous section)
    const client = connect('YOUR_API_KEY', userToken, 'APP_ID');
    const user1 = client.feed('user', '1');
    // subscribe to the changes
    const subscription = user1.subscribe(function (data) {
    // now whenever something changes to the feed user 1
    // the callback will be called
    // To cancel a subscription you can call cancel on the
    // object returned from a subscribe call.
    // This will remove the listener from this channel.

    Docs are available on

    Node version requirements & Browser support

    This API Client project requires Node.js v10 at a minimum.

    The project is supported in line with the Node.js Foundation Release Working Group.

    See the github action configuration for details of how it is built, tested and packaged.


    See extensive at test documentation for your changes.

    You can find generic API documentation enriched by code snippets from this package at

    Copyright (c) 2015-2020 Inc, and individual contributors. All rights reserved.

    See the file "LICENSE" for information on the history of this software, terms & conditions for usage, and a DISCLAIMER OF ALL WARRANTIES.

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