JavaScript SDK quick start

This guide describes how to quickly integrate Fraud Prevention into your web application to get started. This includes both the client-side integration, as well as the backend API integration required to complete the flow.

Check out our sample app

Note

Client-side integrations are recommended for POCs and testing. For production environments, consider implementing Backend integration. Learn more about integration options: Client-side integration vs Backend integration.

How it works

The flow starts with the user navigating to the webpage (1). The SDK gets initialized and starts sending telemetry to Mosaic (2). When a user performs an action, for example, clicks a login button (3), the SDK triggers an action event (4) and obtains an action token (5) which then forwards to the backend (6). Having received an action token, the application backend uses it to fetch recommendation from Mosaic (7 & 8) and instructs the client to act accordingly (9) in order to complete the login procedure (10). Upon successful login, the client sets the user (11). As a last optional step, your server can report the action result back to Mosaic (12).

Before you start

Before you start integrating the SDK, you need to ensure effective communication with Mosaic's assets. This includes:

  • Enabling Mosaic's IPs and URLs on your network
  • Extending the Content-Security-Policy header (if you have enabled Content Security Policy (MDN) on your web server)

See Enable communication with Mosaic APIs for additional information.

Step 1: Get client credentials

Admin Portal

Client credentials are used to identify your app and generate access tokens for authorizing Mosaic requests. To obtain them, you'll need to create an application in the Admin Portal (if you don’t have one yet).

  1. From Applications , click Add application .
  2. Add the friendly application name to display in the Admin Portal.
  3. Add an OIDC client, specify the client secret as an authentication method, and your website URL as a redirect URI (e.g., https://your-domain.com ).
    Note

    These fields are required for all Mosaic apps, but won’t be used for Fraud Prevention.

  4. Click Add to create your application. This will automatically generate your client credentials.

Step 2: Load SDK

Client

Start monitoring your end-user risk levels by loading the SDK. To do this, add the code below to your front-end web application by including the following HTML script tag in all relevant pages. The [CLIENT_ID] should be replaced with your client ID from Step 1.

Copy
Copied
<!--Loads the latest SDK within the major version 1
See changelog for details and update version if necessary -->
<script src="https://platform-websdk.transmitsecurity.io/platform-websdk/1.x/ts-platform-websdk.js" defer="true" id="ts-platform-script"></script>

You also need to initialize and configure the SDK by adding the following HTML script tag in all relevant pages:

Copy
Copied
<script>
  document.getElementById("ts-platform-script").addEventListener("load", function() {
    window.tsPlatform.initialize({ clientId: "[CLIENT_ID]" });
  });
</script>

Step 3: Trigger actions

Client

To obtain risk recommendations for sensitive actions, your application should report these actions using the SDK. To do this, add the JS code below to relevant user interactions (such as the Login button click event handler). Replace [ACTION_TYPE] with the appropriate action type from our list of actions. To improve Fraud Prevention, optionally pass the correlation ID, and claimed user ID and its type (for users that haven't authenticated yet). This call returns actionToken that you should pass your backend to obtain the recommendation in the next step.

Note

For an alternative approach that directly utilizes our backend API instead, refer to our Backend API implementation guide.

Copy
Copied
const actionResponse = await window.tsPlatform.drs.triggerActionEvent("[ACTION_TYPE]", { correlationId: "[CORRELATION_ID]", claimedUserId: "[CLAIMED_USER_ID]" } });
const actionToken = actionResponse.actionToken;
// Add code here to send the received actionToken to your backend

Step 4: Fetch recommendation

Backend

You can fetch recommendations for the reported action using the Recommendation API. This is the same API that's also used for mobile integrations.

Mosaic APIs are authorized using an OAuth access token so you'll need to fetch a token using your client credentials (from step 1). The token should target the following resource: https://risk.identity.security. To do this, send the following request:

Copy
Copied
  const { access_token } = await fetch(
    `https://api.transmitsecurity.io/oidc/token`,
    {
      method: 'POST',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded'
      }
      body: new URLSearchParams({
        grant_type: client_credentials,
        client_id: [CLIENT_ID],
        client_secret: [CLIENT_SECRET],
        resource: 'https://risk.identity.security'
      })
    }
  );

From your backend, invoke the Recommendation API by sending a request like the one below. The [ACCESS_TOKEN] is the authorization token you obtained using your client credentials and [ACTION_TOKEN] is the actionToken received from the SDK in step 3.

Copy
Copied
const query = new URLSearchParams({
  action_token: '[ACTION_TOKEN]', // Obtained in Step 3
}).toString();

const resp = await fetch(
  `https://api.transmitsecurity.io/risk/v1/recommendation?${query}`,
  {
    method: 'GET',
    headers: {
      Authorization: 'Bearer [ACCESS_TOKEN]',
    },
  }
);

Step 5: Set user

Client

A user identifier must be reported to Mosaic after you've fully authenticated the user (including, for example, any required 2FA that was done). This will set the user for all subsequent events in the current device session, or until the app prompts the user to re-login, or until the user is explicitly cleared.

To do this, add the JS code below after your application has authenticated a user (or after SDK initialization if you already have the user context of the authenticated user when loading the page). The [USER_ID] is an opaque identifier for the user in your system and must not include personal user identifiers, such as email, in plain text.

Copy
Copied
await window.tsPlatform.drs.setAuthenticatedUser('[USER_ID]');
Note

For an alternative approach that directly utilizes our backend API instead, refer to our Backend API implementation guide.

Step 6: Clear user

The user gets automatically cleared once the session or in case of a new login action. After the user logs out, you should clear the set user so they are not associated with future actions. To clear the user, call the clearUser() method:

Copy
Copied
await window.tsPlatform.drs.clearUser();