Provides an interface to manage user API access keys.
Once installed, an 'API Key' tab will be available on contact screens, if you have to correct permissions you'll be able to edit/generate and/or view the site and contact API Keys.
Screenshot (click to enlarge)
Since CiviCRM 5.x, extension releases compatible with CiviCRM 5.0 are compatible with 5.0 and later. An extension release compatible with 5.25, for example, means that it requires CiviCRM 5.25 or later.