Rate this page:

Conversations API Quickstart

With Twilio’s Conversations API, you can build virtual spaces ("conversations") for customers to communicate across multiple channels.

Instead of building separate solutions for online chat versus SMS engagement, you now have one API to create customer engagement across all of them.

This Quickstart will cover:

  • Signing up for Twilio and provisioning your first SMS-enabled phone number
  • Creating your first Conversation with the Conversations API
  • Connecting an SMS Participant to a Conversation
  • Configuring a demo Conversations application
  • Adding a chat Participant to a Conversation to talk with the SMS Participant

You will need:

  • Your Twilio credentials (Twilio Account SID and Twilio Auth Token) found in the Console
  • An installed version of the twilio-cli (We'll go over how to install and set this up.)
  • A CodeSandbox account

Twilio Conversations is built on top of several Twilio products. It may also be useful to pull up a document or sticky note to keep track of the various values that you'll need throughout this Quickstart.

Let's get started!

Sign up for Twilio and provision your first SMS-enabled number

If you’ve already signed up for Twilio and have an SMS-enabled phone number, you can skip ahead to installing the Twilio CLI.

Before you create your first Conversation, you'll need to sign up for a Twilio account or sign into your existing account and purchase an SMS-capable phone number.

You can sign up for a free Twilio trial account here.

  • When you sign up, you'll be asked to verify your personal phone number. This helps Twilio verify your identity and also allows you to send test messages to your phone from your Twilio account while in trial mode.
  • Once you verify your number, you'll be asked a series of questions to customize your experience.
  • Once you finish the onboarding flow, you'll arrive at your project dashboard in the Twilio Console. This is where you'll be able to access your Account SID, authentication token, find a Twilio phone number, and more.

If you don't currently own a Twilio phone number with SMS functionality, you'll need to purchase one. After navigating to the Buy a Number page, check the SMS box and click Search.

Buy a twilio phone number.png

You’ll then see a list of available phone numbers and their capabilities. Find a number that suits your fancy and click Buy to add it to your account.

Select an SMS-enabled phone number

Next, we'll install the Twilio CLI and log in to it.

Install twilio-cli

First, install twilio-cli if you haven't done so already:

The suggested way to install twilio-cli on macOS is to use Homebrew. If you don’t already have it installed, visit the Homebrew site for installation instructions and then return here.

Once you have installed Homebrew, run the following command to install twilio-cli:

brew tap twilio/brew && brew install twilio

The suggested way to install twilio-cli is by using Scoop, a command-line installer for Windows. If you don’t already have it installed, visit the Scoop site for installation instructions and then return here.

Note PowerShell will need to be run as an administrator to avoid common permission issues when installing via Scoop.

  1. Add the twilio-cli Bucket:
    scoop bucket add twilio-scoop
  2. Install the app:
    scoop install twilio​

twilio-cli can be installed using the Advanced Package Tool (apt) on most distributions such as Debian, Ubuntu, and Mint.

To do so, run the following commands in your terminal:

wget -qO- \
  | sudo apt-key add -
sudo touch /etc/apt/sources.list.d/twilio.list
echo 'deb /' \
  | sudo tee /etc/apt/sources.list.d/twilio.list
sudo apt update
sudo apt install -y twilio

For other installation methods, see the Twilio CLI Quickstart.

Log in to twilio-cli

To access your Twilio account, you must provide your Twilio credentials to twilio-cli. This can be done by running this command:

twilio login

You will be prompted for:

  • A shorthand identifier for your profile: This can be anything, e.g, project-danger.
  • Your Account SID and Auth Token, both of which you can find on the dashboard of your Twilio Console.

This will create an API Key for you that will be stored securely for future use.

Now that you have a Twilio account, the Twilio CLI, and a programmable phone number, you can start writing some code.

Number in hand, let's do this!

Create your first Conversation

It's time to make our first Conversation! In the sample code, replace the Account SID and Auth Token with the values from your Twilio Console:

Loading Code Sample...
        Create a Conversation with a FriendlyName using the REST API

        Create your first Conversation

        Create a Conversation with a FriendlyName using the REST API

        It's okay to hardcode your credentials when testing locally, but you should use environment variables to keep them secret before committing any code or deploying to production. Check out How to Set Environment Variables for more information.

        Copy down the Conversation SID (It starts with CHXXX). Now, let's use it to fetch that Conversation we just created.

        Loading Code Sample...
              Retrieve your new Conversation to find the Chat Service SID

              Fetch your new Conversation

              Retrieve your new Conversation to find the Chat Service SID

              Copy down the Conversation Service SID (It starts with ISXXX), and make sure you've copied the Conversation SID (It starts with CHXXX) as well. We’ll be using these values in the next few steps when we add participants to the Conversation you just created.

              Ready to add some participants

              Add an SMS participant to a Conversation

              You’ve created a Conversation, which you can think of as a virtual space for users to join from the channel of their choice.

              Next, you’ll add your first Participant: someone connecting to the Conversation with an SMS-enabled phone number. (Hint: Use the number that you purchased up above.)

              For the following code sample, replace the placeholder values for:

              • CHXXX...: use the Conversation SID you just copied
              • <Your Personal Mobile Number>: your own mobile number, in E.164 format
              • <Your Purchased Twilio Phone Number>: the Twilio number you purchased in step 1, in E.164 format
              • TWILIO_ACCOUNT_SID: Your Twilio Account SID
              • TWILIO_AUTH_TOKEN: Your Twilio Auth Token
              Loading Code Sample...
                    Create an SMS-based Conversation Participant with the REST API

                    Add a Conversation Participant (SMS)

                    Create an SMS-based Conversation Participant with the REST API

                    Now you have one SMS Participant in the Conversation that you created!

                    Cool, but who do they talk to?

                    Configure the Conversations demo application using

                    Great, you’ve got a Conversation with an SMS Participant. Just one problem: it’s quiet because it’s hard to have a conversation with just one person.

                    It's time to add a second chat Participant to talk with your SMS Participant (which we just created).

                    Sign into CodeSandbox and fork our demo application

                    For this Quickstart, we’ll be using a basic chat-interface application to join our Conversation. We need to take a quick detour to set up the sample Conversations application.

                    For your convenience, we’ve created a demo application that provides a basic Javascript-based chat interface in which you can send and receive messages in your new Conversation.

                    Sign in to and fork the demo app into your own Sandbox. CodeSandbox is a cloud-based online editor that we can use to host, update, and edit our sample chat application.

                    Conversations Demo App on with arrow pointing to "Fork" button

                    Now that you have forked the demo application, you have your own sandbox and online editor to adapt the code. Your changes will be instantly reflected in the deployed application.

                    Use twilio-cli to install the Twilio token plugin and generate your token

                    In order for your Conversations demo application to work, we need to authenticate our chat user by retrieving a short-lived token attached to your API Key. We'll use twilio-cli to generate a token that you can use in your application.

                    Run the following command to add the Twilio token plugin that handles token generation:

                    twilio plugins:install @twilio-labs/plugin-token

                    You can create a token with this command, replacing the arguments with your own values:

                    twilio token:chat --identity testPineapple --chat-service-sid ISXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX --profile project-danger
                    • For the value you pass to identity, use the username that your chat Participant will use to log into the chat demo application. Use any identity that you like. May we suggest testPineapple?

                    • For your chat-service-sid, use the unique Conversation Service SID starting with ISXXX that you copied after creating your Conversation.

                    • For the profile, enter what you used as the shorthand identifier for your profile when setting up the Twilio CLI. In this instance, we used project-danger.

                    Copy the token returned from the previous command and paste it into the ConversationsApp.js placeholder field in the getToken function.


                    Reload your Conversations demo application, which now includes a token for your chosen chat identity (i.e., the one you just attached to the token we created). Log in with that identity in the web interface.


                    Once you see "You are connected." You know that you have logged into the Conversations demo application:


                    Phew! Your Conversations demo application is all set up and ready to go. We're on to the last part: adding this chat Participant to your Conversation.

                    Let's do this!

                    Add a chat participant to a Conversation

                    Let’s add a chat participant to our Conversation so it isn’t so lonely in there. The following code sample adds a chat Participant to the Conversation. You will need to replace the following information:

                    • Conversation SID: the same CHXXX SID that you used previously
                    • Identity: the identity that you just created in the Conversations demo application (For this example, we'll use testPineapple)
                    Loading Code Sample...
                          Create a chat-based Conversation Participant with the REST API

                          Add a Conversation Participant (Chat)

                          Create a chat-based Conversation Participant with the REST API

                          After you run this code, you should see a link with your Conversation's "friendly name" pop up in the Conversations Demo Application. That means you’re connected and can start chatting!


                          I have many things to say to myself.

                          Talk amongst "yourself"

                          New Conversation? Check! Working demo application? Check! Two Participants? Check!

                          It’s time to start talking. On your mobile phone, send a text message to the Twilio number you used to set up your Conversation. Your Conversations demo application should receive the same message almost immediately!


                          If you reply in the demo application browser, you'll receive the message as a text on your phone. Notice how all of this routing between the two channels (SMS and chat) is done automatically on your behalf. Three REST requests in, and you have a working use-case, congratulations!

                          What’s Next?

                          From here, you can add more participants to your Conversation via chat, SMS, or even WhatsApp. New participants start receiving new messages automatically, and deleting those same participants removes them from the Conversation.

                          Subject to regional SMS limitations, you can have any number of SMS participants (“user address”) for each Twilio number (“proxy address”), or you can have a separate proxy address for each of your users. However, a mobile phone number can be in only one conversation with any given Twilio number—you cannot have multiple conversations containing the same Twilio number and mobile phone number pair.

                          Want to know more about the Twilio Conversations API?

                          Rate this page:

                          Need some help?

                          We all do sometimes; code is hard. Get help now from our support team, or lean on the wisdom of the crowd by visiting Twilio's Stack Overflow Collective or browsing the Twilio tag on Stack Overflow.

                          Loading Code Sample...

                                Thank you for your feedback!

                                Please select the reason(s) for your feedback. The additional information you provide helps us improve our documentation:

                                Sending your feedback...
                                🎉 Thank you for your feedback!
                                Something went wrong. Please try again.

                                Thanks for your feedback!