To make testing and developing with Xfinity quick and easy, we make use of the same API endpoint for sandbox and production, the only difference is the keys used when calling the APIs.

Environment Purpose Base URL
Sandbox The sandbox environment is dedicated to test and development phases.
In this environment, you can create account holders without
real credentials and you can pull test data from all endpoints.

https://xfinitywallet.com/api

Production The sandbox environment is dedicated to test and development phases.
In this environment, you can create account holders with real
credentials and you can pull test data from all endpoints.

https://xfinitywallet.com/api