Register Endpoint for Custom Content Block Component

Once you know the hosted endpoint for your custom content block UI, you must register that endpoint in a Marketing Cloud installed package.

To add content blocks to an existing Marketing Cloud app, add them as components in the same package.
  1. Create an installed package or navigate to an existing package.
  2. Under Components, click Add Component.
  3. Select Custom Content Block.
  4. Type a Name and Description for the content block. This name doesn't display in Content Builder.
  5. Enter the Endpoint URL, which is the base URL for your block widget. Content Builder loads all assets relative to this endpoint.
  6. To complete registration, save the component.