Sinch Developer Documentation

Building blocks to enable rich customer communication

Getting started

Learn how to create and configure your first Conversation API app.

In this tutorial, we’ll go through the steps of creating and configuring your first app in the Sinch dashboard.

You will need

  • Channels that are set up and registered to be included in the Conversation API.
  • You must also set up a Service plan ID/Service ID/Sender Identity at corresponding channel portals.
  • Your Access keys and Project ID which can be found in the Sinch dashboard.

Step One: Creating a new App

Let's get started by creating a new app in the Sinch dashboard.

  1. Go to the Apps page.
  2. Click NEW APP.
  3. Add a display name and select US or EU from the Region drop-down.



Once an App is created it cannot be migrated to another region.

New AppNew App

Once a display name is created, and a region is selected, a unique App ID will be generated for you.

Step Two: Select and add channels

Having already set up your channels, you'll now:

  1. Select your channel sender identity, if required, to configure your channel to work with your Conversation API App.
  2. Update the Callback URL of the underlying channel to point to the channel adapter of the Conversation API.

The Callback URL for most channels will be updated automatically which will overwrite the current Callback URL.

New ChannelNew Channel



Some channels require an access token or more, like Messenger or Viber. Please visit the Messenger or Viber documentation on how to set up these channels and acquire the token.

Step Three: Reordering and prioritizing channels

The Conversation API will try to send messages on the channels based on the priority preference you set. If there is no preference set, the API will try the order priority based on the following criteria:

  1. If a conversation with the contact exists: the active channel of the conversation is tried first.
  2. The existing channels for the contact, that are ordered by contact channel preferences (if given).
  3. Lastly the existing channels for the contact are ordered by the App priority.

You can define the App channel priority by reordering the channels that you have set up by taking these steps:

  1. Click REORDER.
  2. Drag and drop your channels to the order you want them in.
  3. Click SAVE.


Step Four: Add and configure webhooks

Webhooks are callbacks triggered by specific events. When adding a Webhook you are prompted to specify a Target URL and events that should trigger a call to the specified URL. To configure webhooks:

  1. Go to and copy a target URL.
  2. Go to Apps and click your app name.
  3. Scroll down and click ADD WEBHOOK.
  4. Select your Target type, Target URL, Secret token and Triggers



The Secret Token can be used to sign the content of Conversation API callbacks. This way you can verify the integrity of the callbacks coming from Conversation API.


Step Five: Project ID and Access keys

Your Project ID is used to group your Conversation API resources. You can find it by taking these steps:

  1. Go to your app page.
  2. In the Project pane, select the project you want to use and copy the Project ID that appears.

Access keys are required for authentication purposes when using the Conversation API. To generate that access keys, take these steps:

  1. Go to the Account details page and then go to Settings > Access Keys and click NEW KEY.

Access KeysAccess Keys

A client_id and client_secret will be provided when creating an Access Key in the portal. The secret is only shown after generation, copy and store it in a safe place.

To obtain an Access Token to Conversation API, use your client_id and client_secret and call the OAuth 2.0 Token endpoint:

EU region:

curl -d grant_type=client_credentials --user <client_id>:<client_secret>

US region:

curl -d grant_type=client_credentials --user <client_id>:<client_secret>

The access token can be used in conjunction with your project ID to interact with the Conversation API. Read more about possible authentication methods at Authentication.

Step Six: Try our Postman collection

We have a Postman collection available to download. There you can find examples to access our API endpoints.

In the collection there are variables that you need to fill with your own values and IDs to be able to send the requests:

Postman VariablesPostman Variables

The collection includes requests to manage your resources and to create the same Conversation App that we created on the portal via these requests!

Available Services:

  • APP Management

  • CONTACT Management

  • CONVERSATION Management

  • WEBHOOK Management

You will also find requests to send messages and events to your contact via

* `TEXT`



* `CARD`




Step Seven: Send Messages!

Conversation API integrates multiple channels that you can try. Channel Support contains detailed examples and screenshots about message types that you can try on supported channels!

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Updated 27 days ago

Getting started

Learn how to create and configure your first Conversation API app.

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