!!! Overview
[{$pagename}] is a [OAuth Parameters Registry] and is __RECOMMENDED__ to be used to indicate the lifetime in [seconds] of the [Access Token].  

For example, the value "3600" denotes that the access token will expire in one hour from the time the response was generated.


%%information
The "expires_in" member in [JSON] must be a numeric value, not a string. Unfortunately quite a few implementations have got this wrong. A likely reason is the quoted value "3600" in the [RFC 6749] where "expires_in" is defined. The quotes in the text version of the RFC are only an artefact of the marked-up as a protocol value in the RFC production chain.
%%


If omitted, the [Authorization Server] SHOULD provide the expiration time via other means or document the default value.

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]