AI Moderation - CometChat Docs

AI Integration Quick Reference

// Send message and check moderation status
CometChat.sendMessage(textMessage, onSuccess: (TextMessage message) {
  if (message.moderationStatus?.value == ModerationStatusEnum.PENDING.value) {
    // Message is under moderation review
  }
}, onError: (e) {});

// Listen for moderation results
CometChat.addMessageListener("MODERATION_LISTENER", MessageListener(
  onMessageModerated: (BaseMessage message) {
    // Handle APPROVED or DISAPPROVED status
  },
));

// Remove listener when done
CometChat.removeMessageListener("MODERATION_LISTENER");

Moderation Status: PENDING → APPROVED or DISAPPROVED Supported Types: Text, Image, Video messages

Overview

AI Moderation in the CometChat SDK helps ensure that your chat application remains safe and compliant by automatically reviewing messages for inappropriate content. This feature leverages AI to moderate messages in real-time, reducing manual intervention and improving user experience.

Available via: SDK | REST API | UI Kits | Dashboard

For a broader understanding of moderation features, configuring rules, and managing flagged messages, see the Moderation Overview.

Prerequisites

Before using AI Moderation, ensure the following:

Moderation is enabled for your app in the CometChat Dashboard
Moderation rules are configured under Moderation > Rules
You’re using CometChat SDK version that supports moderation

How It Works

Step	Description
1. Send Message	App sends a text, image, or video message
2. Pending Status	Message is sent with `PENDING` moderation status
3. AI Processing	Moderation service analyzes the content
4. Result Event	`onMessageModerated` event fires with final status

Supported Message Types

Moderation is triggered only for the following message types:

Message Type	Moderated	Notes
Text Messages	✅	Content analyzed for inappropriate text
Image Messages	✅	Images scanned for unsafe content
Video Messages	✅	Videos analyzed for prohibited content

Moderation Status

The moderationStatus property returns one of the following enum values:

Status	Enum Value	Description
Pending	`ModerationStatusEnum.PENDING`	Message is being processed by moderation
Approved	`ModerationStatusEnum.APPROVED`	Message passed moderation and is visible
Disapproved	`ModerationStatusEnum.DISAPPROVED`	Message violated rules and was blocked

Implementation

Step 1: Send a Message and Check Initial Status

When you send a text, image, or video message, check the initial moderation status:

Dart

TextMessage textMessage = TextMessage(
  text: "Hello, how are you?",
  receiverUid: receiverUID,
  receiverType: ReceiverTypeConstants.user,
);

CometChat.sendMessage(
  textMessage,
  onSuccess: (TextMessage message) {
    // Check moderation status
    if (message.moderationStatus?.value == ModerationStatusEnum.PENDING.value) {
      print("Message is under moderation review");
      // Show pending indicator in UI
    }
  },
  onError: (CometChatException e) {
    print("Message sending failed: ${e.message}");
  },
);

Response

On Success — A TextMessage object containing all details of the sent message, including the initial moderation status:TextMessage Object:

Parameter	Type	Description	Sample Value
`id`	number	Unique message ID	`501`
`metadata`	object	Custom metadata attached to the message	`{}`
`receiver`	object	Receiver user object	See below ↓
`editedBy`	string	UID of the user who edited the message	`null`
`conversationId`	string	Unique conversation identifier	`"cometchat-uid-1_user_cometchat-uid-2"`
`sentAt`	number	Epoch timestamp when the message was sent	`1745554729`
`receiverUid`	string	UID of the receiver	`"cometchat-uid-2"`
`type`	string	Type of the message	`"text"`
`readAt`	number	Epoch timestamp when the message was read	`0`
`deletedBy`	string	UID of the user who deleted the message	`null`
`deliveredAt`	number	Epoch timestamp when the message was delivered	`0`
`deletedAt`	number	Epoch timestamp when the message was deleted	`0`
`replyCount`	number	Number of replies to this message	`0`
`sender`	object	Sender user object	See below ↓
`receiverType`	string	Type of the receiver	`"user"`
`editedAt`	number	Epoch timestamp when the message was edited	`0`
`parentMessageId`	number	ID of the parent message (for threads)	`-1`
`readByMeAt`	number	Epoch timestamp when read by the current user	`0`
`category`	string	Message category	`"message"`
`deliveredToMeAt`	number	Epoch timestamp when delivered to the current user	`0`
`updatedAt`	number	Epoch timestamp when the message was last updated	`1745554729`
`text`	string	The text content of the message	`"Hello, how are you?"`
`tags`	array	List of tags associated with the message	`[]`
`unreadRepliesCount`	number	Count of unread replies	`0`
`mentionedUsers`	array	List of mentioned users	`[]`
`hasMentionedMe`	boolean	Whether the current user is mentioned	`false`
`reactions`	array	List of reactions on the message	`[]`
`moderationStatus`	string	Moderation status of the message	`"pending"`
`quotedMessageId`	number	ID of the quoted message	`null`

sender Object:

Parameter	Type	Description	Sample Value
`uid`	string	Unique identifier of the sender	`"cometchat-uid-1"`
`name`	string	Display name of the sender	`"Andrew Joseph"`
`link`	string	Profile link	`null`
`avatar`	string	Avatar URL	`"https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-1.webp"`
`metadata`	object	Custom metadata	`{}`
`status`	string	Online status	`"online"`
`role`	string	User role	`"default"`
`statusMessage`	string	Status message	`null`
`tags`	array	User tags	`[]`
`hasBlockedMe`	boolean	Whether this user has blocked the current user	`false`
`blockedByMe`	boolean	Whether the current user has blocked this user	`false`
`lastActiveAt`	number	Epoch timestamp of last activity	`1745554700`

receiver Object:

Parameter	Type	Description	Sample Value
`uid`	string	Unique identifier of the receiver	`"cometchat-uid-2"`
`name`	string	Display name of the receiver	`"George Alan"`
`link`	string	Profile link	`null`
`avatar`	string	Avatar URL	`"https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-2.webp"`
`metadata`	object	Custom metadata	`{}`
`status`	string	Online status	`"offline"`
`role`	string	User role	`"default"`
`statusMessage`	string	Status message	`null`
`tags`	array	User tags	`[]`
`hasBlockedMe`	boolean	Whether this user has blocked the current user	`false`
`blockedByMe`	boolean	Whether the current user has blocked this user	`false`
`lastActiveAt`	number	Epoch timestamp of last activity	`1745550000`

Error

Parameter	Type	Description	Sample Value
`code`	string	Error code identifier	`"ERR_BLOCKED_BY_EXTENSION"`
`message`	string	Human-readable error message	`"Message blocked by moderation."`
`details`	string	Additional technical details	`"The message was flagged and blocked by the AI moderation extension."`

Step 2: Listen for Moderation Results

Implement the MessageListener to receive moderation results in real-time:

Dart

class ModerationListener with MessageListener {
  
  @override
  void onMessageModerated(BaseMessage message) {
    if (message is TextMessage) {
      switch (message.moderationStatus?.value) {
        case ModerationStatusEnum.APPROVED:
          print("Message ${message.id} approved");
          // Update UI to show message normally
          break;
          
        case ModerationStatusEnum.DISAPPROVED:
          print("Message ${message.id} blocked");
          // Handle blocked message (hide or show warning)
          handleDisapprovedMessage(message);
          break;
      }
    } else if (message is MediaMessage) {
      switch (message.moderationStatus?.value) {
        case ModerationStatusEnum.APPROVED:
          print("Media message ${message.id} approved");
          break;
          
        case ModerationStatusEnum.DISAPPROVED:
          print("Media message ${message.id} blocked");
          handleDisapprovedMessage(message);
          break;
      }
    }
  }
}

// Register the listener
CometChat.addMessageListener("MODERATION_LISTENER", ModerationListener());

// Don't forget to remove the listener when done
// CometChat.removeMessageListener("MODERATION_LISTENER");

Step 3: Handle Disapproved Messages

When a message is disapproved, handle it appropriately in your UI:

Dart

void handleDisapprovedMessage(BaseMessage message) {
  int messageId = message.id;
  
  // Option 1: Hide the message completely
  hideMessageFromUI(messageId);
  
  // Option 2: Show a placeholder message
  showBlockedPlaceholder(messageId, "This message was blocked by moderation");
  
  // Option 3: Notify the sender (if it's their message)
  if (message.sender?.uid == currentUserUID) {
    showNotification("Your message was blocked due to policy violation");
  }
}

Next Steps

After implementing AI Moderation, explore these related features:

AI Agents

Build intelligent AI-powered agents for automated conversations

Flag Message

Allow users to manually report inappropriate messages

AI Chatbots

Create automated chatbot experiences for your users

Receive Messages

Handle incoming messages and moderation events

​Overview

​Prerequisites

​How It Works

​Supported Message Types

​Moderation Status

​Implementation

​Step 1: Send a Message and Check Initial Status

​Step 2: Listen for Moderation Results

​Step 3: Handle Disapproved Messages

​Next Steps

AI Agents

Flag Message

AI Chatbots

Receive Messages

Overview

Prerequisites

How It Works

Supported Message Types

Moderation Status

Implementation

Step 1: Send a Message and Check Initial Status

Step 2: Listen for Moderation Results

Step 3: Handle Disapproved Messages

Next Steps