The currently available API uses Bearer token authentication. To generate your API keys, go to the Integrations section, click on the Manage User Tracking API and then Create API key. Please note, you might want to switch the API mode to Full sync before you can create an API key.
After you enter a name and click Generate, you will receive your API key. You won't be able to see the key again;don't forget to copy it and store it safely in your environment.
This key should not be used in front-end environments.
To authorize the REST API request, use the
Authorization header. For example:
POST /v1/users/identify Host: api.productfruits.com Authorization: Bearer yourApiKeyHere Content-Type: application/json