AI Integration Quick Reference
AI Integration Quick Reference
Where It Fits
CometChatMessageList renders a scrollable, real-time message feed for a user or group conversation. Wire it alongside CometChatMessageHeader and CometChatMessageComposer to build a standard chat view.

Minimal Render
.cometchat-message-list
Filtering Messages
Pass aCometChat.MessagesRequestBuilder to messagesRequestBuilder. The UID/GUID parameters are always overridden internally based on the user/group prop.
Reactions Request Builder
Actions and Events
Callback Props
onThreadRepliesClick
Fires when a threaded message reply count is clicked.onReactionClick
Fires when a reaction on a message bubble is clicked.onReactionListItemClick
Fires when a specific reaction in the reaction detail view is clicked.onError
Fires on internal errors.Global UI Events
SDK Events (Real-Time, Automatic)
The component listens to these SDK events internally:Custom View Slots
headerView
Custom view above the message list.
- TypeScript
- CSS
footerView
Custom view below the message list.
- TypeScript
- CSS
templates
Custom message bubble templates via CometChatMessageTemplate.Date Time Formatting
Customize timestamps usingCalendarObject:
Common Patterns
Threaded message list
Hide all chrome — minimal list
Left-aligned messages
AI conversation starters and smart replies
CSS Architecture
The component uses CSS custom properties (design tokens) defined in@cometchat/chat-uikit-react/css-variables.css. The cascade:
- Global tokens set on the
.cometchatroot wrapper. - Component CSS (
.cometchat-message-list) consumes these tokens viavar(). - Overrides target
.cometchat-message-listdescendant selectors.
Key Selectors
Customization Matrix
Props
All props are optional. Sorted alphabetically.customSoundForMessages
URL to a custom audio file for incoming message notifications.disableSoundForMessages
Disables the notification sound for incoming messages.emptyView
Custom component displayed when there are no messages.errorView
Custom component displayed when an error occurs.footerView
Custom component displayed below the message list.goToMessageId
Scrolls to the specified message on initial load.group
The group for group conversation messages.headerView
Custom component displayed above the message list.hideAvatar
Hides avatars on messages.hideCopyMessageOption
Hides the copy message option.hideDateSeparator
Hides date separators between message groups.hideDeleteMessageOption
Hides the delete message option.hideEditMessageOption
Hides the edit message option.hideError
Hides the default and custom error views.hideFlagMessageOption
Hides the “Report Message” option.hideFlagRemarkField
Hides the remark text area in the flag message dialog.hideGroupActionMessages
Hides group action messages (join, leave, kick, etc.).hideMessageInfoOption
Hides the message info option.hideMessagePrivatelyOption
Hides the “Message Privately” option.hideModerationView
Hides the moderation view below moderated messages.hideReactionOption
Hides the reaction option.hideReceipts
Hides read/delivery receipt indicators.hideReplyInThreadOption
Hides the “Reply in Thread” option.hideReplyOption
Hides the reply option.hideStickyDate
Hides the sticky date header.hideTranslateMessageOption
Hides the translate message option.isAgentChat
Toggles AI Agent functionality for the message list.loadingView
Custom component displayed during the loading state.loadLastAgentConversation
Loads the most recent existing agent conversation on mount.messageAlignment
Controls message alignment.messageInfoDateTimeFormat
Format for message info timestamps.messageSentAtDateTimeFormat
Format for message sent-at timestamps.messagesRequestBuilder
Controls which messages load and in what order.
UID/GUID are always overridden internally.
onError
Callback fired when the component encounters an error.onReactionClick
Callback fired when a reaction on a message is clicked.onReactionListItemClick
Callback fired when a reaction list item is clicked.onThreadRepliesClick
Callback fired when a threaded message reply count is clicked.parentMessageId
Displays threaded conversation for the specified parent message.quickOptionsCount
Number of message options visible in the main menu before overflow.reactionsRequestBuilder
Controls how reactions are fetched for messages.scrollToBottomOnNewMessages
Auto-scrolls to bottom when new messages arrive.separatorDateTimeFormat
Format for date separator timestamps.showConversationStarters
Shows AI conversation starters.showMarkAsUnreadOption
Shows “Mark Unread” option in message actions.showScrollbar
Shows the scrollbar in the message list.showSmartReplies
Shows AI smart replies.smartRepliesDelayDuration
Delay in milliseconds before smart replies appear.smartRepliesKeywords
Keywords that trigger smart replies.startFromUnreadMessages
Loads from the first unread message if available.stickyDateTimeFormat
Format for sticky date header timestamps.templates
Custom message bubble templates.
See CometChatMessageTemplate.
textFormatters
Custom text formatters for message content.
See CometChatMentionsFormatter.