Authentication and S2S
How titles authenticate with XBOX Live and make service-to-service REST calls, covering custom service config, XSTS tokens, and S2S auth flow.
This section describes how to authenticate with XBOX services, and make service-to-service calls to XBOX services from the title.
Last modified on August 20, 2026
Related topics
Service-to-service multiplayer session managementOptional servicesS2s callsS2s auth callsS2s call patterns