Used by the oauthauthentication Vagrant role (which installs https://www.mediawiki.org/wiki/Extension:OAuthAuthentication on a development VM) for logging in with a Wikimedia account.
WARNING: there is no way to secure credentials for Vagrant, so the client secret for this application is made public. Since the application is authentication-only, and only used on dev boxes, that should not be dangerous, even with the wildcard callback URL.
Owner-only
No
Applicable project
meta.wikimedia.org
OAuth "callback URL"
http://127.0.0.1
Allow consumer to specify a callback in requests and use "callback" URL above as a required prefix.
Yes
Applicable grants
User identity verification only, no ability to read pages or act on a user's behalf.