"Submitting sensitive authentication request parameters to action=clientlogin, action=createaccount, action=linkaccount, and action=changeauthenticationdata in the query string is now an error. They should be submitted in the POST body instead."
"action=move now reports errors when moving the talk page as an array under key talkmove-errors, rather than using talkmove-error-code and talkmove-error-info. The format for subpage move errors has also changed.
"action=upload now reports optional stash failures as an array under key 'stasherrors' rather than a 'stashfailed' text string."
"action=watch reports 'errors' and 'warnings' instead of a single 'error', and no longer returns a 'message' on success."
"Added 'maxarticlesize' property to action=query&meta=siteinfo which contains the value of $wgMaxArticleSize." _Returned by @mw.get_general['maxarticlesize']_
"Property 'modulemessages' from action=parse&prop=modules was removed (deprecated since 1.26)."We do not have parsing functionality
"The following response properties from action=login, deprecated in 1.27, are now removed: lgtoken, cookieprefix, sessionid. Clients should handle cookies to properly manage session state." #67
"Submitting the lgtoken and lgpassword parameters in the query string to action=login is now deprecated and outputs a warning. They should be submitted in the POST body instead."
MediaWiki 1.29 changes we might be affected by
See MediaWiki 1.29
action=clientlogin,action=createaccount,action=linkaccount, andaction=changeauthenticationdatain the query string is now an error. They should be submitted in the POST body instead.""action=movenow reports errors when moving the talk page as an array under keytalkmove-errors, rather than usingtalkmove-error-codeandtalkmove-error-info. The format for subpage move errors has also changed."action=uploadnow reports optional stash failures as an array under key 'stasherrors' rather than a 'stashfailed' text string.""action=watchreports 'errors' and 'warnings' instead of a single 'error', and no longer returns a 'message' on success."MediaWiki 1.28 changes we might be affected by
See MediaWiki 1.28
"Added 'maxarticlesize' property to action=query&meta=siteinfo which contains the value of_Returned by$wgMaxArticleSize."@mw.get_general['maxarticlesize']_"Property 'modulemessages' from action=parse&prop=modules was removed (deprecated since 1.26)."We do not have parsing functionality"The following response properties from action=login, deprecated in 1.27, are now removed: lgtoken, cookieprefix, sessionid. Clients should handle cookies to properly manage session state."#67