STS Authentication End-Of-Life to Occur With The February '21 Release

Cornerstone's legacy API authentication framework, Session Token Service (STS), will be deprecated in February 2020 and will be fully retired and unavailable in February 2021. Any requests to the endpoint will fail starting February 2021, when STS is fully retired.

Organizations must modify their code for existing integrations that use Cornerstone's API and switch to OAuth 2.0 from STS by February 2021. This only impacts Cornerstone's RESTful APIs, which includes the following:

  • Cornerstone's Foundational APIs (i.e., Cornerstone REST services)
  • Reporting API
  • Employee API (i.e., Cornerstone Core/Cornerstone HR services)
  • Express Class API
  • Learning Assignment API
  • Job Application API

The following are NOT currently impacted:

  • xAPIs