diff --git a/extension.json b/extension.json
index 93a189fd0..628f5638b 100644
--- a/extension.json
+++ b/extension.json
@@ -193,6 +193,13 @@
 				"ModeTabOptionWidget.js",
 				"AbandonCommentDialog.js",
 				"AbandonTopicDialog.js",
+				{
+					"name": "contLangMessages.json",
+					"callback": "\\MediaWiki\\Extension\\DiscussionTools\\ResourceLoaderData::getContentLanguageMessages",
+					"callbackParam": [
+						"tempuser-helppage"
+					]
+				},
 				{
 					"name": "licenseMessages.json",
 					"callback": "\\MediaWiki\\Extension\\DiscussionTools\\ResourceLoaderData::getTermsOfUseMessagesParsed",
@@ -211,6 +218,7 @@
 				"discussiontools-replywidget-abandontopic-keep",
 				"discussiontools-replywidget-advanced",
 				"discussiontools-replywidget-anon-warning",
+				"discussiontools-replywidget-autocreate-warning",
 				"discussiontools-replywidget-cancel",
 				"discussiontools-replywidget-feedback",
 				"discussiontools-replywidget-mention-tool-header",
diff --git a/i18n/en.json b/i18n/en.json
index 16d533931..970b366a6 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -117,6 +117,7 @@
 	"discussiontools-replywidget-abandontopic-keep": "Continue writing",
 	"discussiontools-replywidget-advanced": "Advanced",
 	"discussiontools-replywidget-anon-warning": "<strong>You are not logged in.</strong> To be notified when someone replies and receive attribution with your name instead of your IP address, you can [$1 log in] or [$2 create an account].",
+	"discussiontools-replywidget-autocreate-warning": "<strong>You are not logged in.</strong> To be notified when someone replies and receive attribution with a name of your choice instead of an [[$3|auto-generated name]], you can [$1 log in] or [$2 create an account].",
 	"discussiontools-replywidget-cancel": "Cancel",
 	"discussiontools-replywidget-feedback": "{{GENDER:|Share feedback}} about this feature",
 	"discussiontools-replywidget-feedback-link": "https://www.mediawiki.org/wiki/Talk:Talk_pages_project/Replying",
diff --git a/i18n/qqq.json b/i18n/qqq.json
index 8b654957e..d9df391e0 100644
--- a/i18n/qqq.json
+++ b/i18n/qqq.json
@@ -131,6 +131,7 @@
 	"discussiontools-replywidget-abandontopic-keep": "Label for button to cancel abandoning a new topic\n\nThis button follows {{msg-mw|discussiontools-replywidget-abandontopic}}.\n\nSimilar to {{msg-mw|discussiontools-replywidget-abandon-keep}}.",
 	"discussiontools-replywidget-advanced": "Label for button to toggle the advanced options, which shows an edit summary input and watchlist checkbox.",
 	"discussiontools-replywidget-anon-warning": "Warning message to be displayed when anonymous user starts writing a new topic or reply.\n* $1 is a URL to log in.\n* $2 is a URL to register an account.",
+	"discussiontools-replywidget-autocreate-warning": "Warning message to be displayed when anonymous user starts writing a new topic or reply, and temporary user auto-creation is enabled.\n* $1 is a URL to log in.\n* $2 is a URL to register an account.\n* $3 is a link to the documentation page for temporary accounts.",
 	"discussiontools-replywidget-cancel": "Label for the cancel button to exit out of the widget\n\n{{Identical|Cancel}}",
 	"discussiontools-replywidget-feedback": "Label for link to share feedback about the reply widget",
 	"discussiontools-replywidget-feedback-link": "{{optional|Link to a page where users can share feedback about the reply widget. Defaults to a page on MediaWiki.org.}}",
diff --git a/modules/CommentDetails.js b/modules/CommentDetails.js
index 26ec138b6..54c17ee68 100644
--- a/modules/CommentDetails.js
+++ b/modules/CommentDetails.js
@@ -7,13 +7,16 @@
  * @param {number} oldId Revision ID of page at time of editing
  * @param {Object.<string,string>} notices Edit notices for the page where the reply is being saved.
  *     Keys are message names; values are HTML to display.
+ * @param {boolean} wouldAutoCreate Whether saving the comment would automatically create a
+ *     temporary account if the user is logged out
  * @param {string} preloadContent Preload content, may be wikitext or HTML depending on `preloadContentMode`
  * @param {string} preloadContentMode 'source' or 'visual'
  */
-function CommentDetails( pageName, oldId, notices, preloadContent, preloadContentMode ) {
+function CommentDetails( pageName, oldId, notices, wouldAutoCreate, preloadContent, preloadContentMode ) {
 	this.pageName = pageName;
 	this.oldId = oldId;
 	this.notices = notices;
+	this.wouldAutoCreate = wouldAutoCreate;
 	this.preloadContent = preloadContent;
 	this.preloadContentMode = preloadContentMode;
 }
diff --git a/modules/controller.js b/modules/controller.js
index 3163ca9a7..44d005791 100644
--- a/modules/controller.js
+++ b/modules/controller.js
@@ -214,7 +214,7 @@ function checkThreadItemOnPage( pageName, oldId, threadItem ) {
 				} ] } ).promise();
 			}
 
-			return new CommentDetails( pageName, oldId, metadata.notices, metadata.content, defaultMode );
+			return new CommentDetails( pageName, oldId, metadata.notices, metadata.wouldautocreate, metadata.content, defaultMode );
 		} );
 }
 
diff --git a/modules/dt.ui.ReplyWidget.js b/modules/dt.ui.ReplyWidget.js
index 1ed4a1521..6419ad2bf 100644
--- a/modules/dt.ui.ReplyWidget.js
+++ b/modules/dt.ui.ReplyWidget.js
@@ -2,6 +2,7 @@ var controller = require( 'ext.discussionTools.init' ).controller,
 	utils = require( 'ext.discussionTools.init' ).utils,
 	ModeTabSelectWidget = require( './ModeTabSelectWidget.js' ),
 	ModeTabOptionWidget = require( './ModeTabOptionWidget.js' ),
+	contLangMessages = require( './contLangMessages.json' ),
 	licenseMessages = require( './licenseMessages.json' ),
 	featuresEnabled = mw.config.get( 'wgDiscussionToolsFeaturesEnabled' ) || {},
 	enable2017Wikitext = featuresEnabled.sourcemodetoolbar,
@@ -267,6 +268,9 @@ function ReplyWidget( commentController, commentDetails, config ) {
 	}
 
 	if ( mw.user.isAnon() ) {
+		var msg = this.commentDetails.wouldAutoCreate ?
+			'discussiontools-replywidget-autocreate-warning' :
+			'discussiontools-replywidget-anon-warning';
 		var returnTo = {
 			returntoquery: window.location.search.slice( 1 ),
 			returnto: mw.config.get( 'wgPageName' )
@@ -274,10 +278,12 @@ function ReplyWidget( commentController, commentDetails, config ) {
 		this.anonWarning = new OO.ui.MessageWidget( {
 			classes: [ 'ext-discussiontools-ui-replyWidget-anonWarning' ],
 			type: 'warning',
-			label: mw.message( 'discussiontools-replywidget-anon-warning' )
+			// eslint-disable-next-line mediawiki/msg-doc
+			label: mw.message( msg )
 				.params( [
 					mw.util.getUrl( 'Special:Userlogin', returnTo ),
-					mw.util.getUrl( 'Special:Userlogin/signup', returnTo )
+					mw.util.getUrl( 'Special:Userlogin/signup', returnTo ),
+					contLangMessages[ 'tempuser-helppage' ]
 				] )
 				.parseDom()
 		} );