Abstract: Described herein is an online service having an integral age gating service. The age gating service is accessible to third-party applications via an application programming interface (API). Consistent with some embodiments, the API includes a method or function call that allows a third-party application developer to establish for a third-party application, age gating logic, for use by the third-party application. The age gating logic may specify a global age threshold, or more than one regional age threshold. The age gating service relies on an access token of an open standards authentication protocol, to provide the third-party application with a Boolean value indicating whether an end-user is above or below an age threshold, without revealing to the third-party application the stated age of an end-user.