Message history pagination with getHistory, read receipts via setLastReadMessage, unread message counts via getUnreadMessagesCount, user memberships listing via getMemberships.

Criteria

Baseline

With context

getHistory for messages

100%

setLastReadMessage

88%

100%

getUnreadMessagesCount

85%

100%

getMemberships for channels

100%

Latest message for read mark

100%

20%

Direct Messaging Service Module

Get-or-create user pattern before creating conversations, createDirectConversation with User object parameter, channel caching with deterministic keys.

Criteria

Baseline

With context

Get before create user

100%

User object to createDirect

100%

Channel cache with Map

100%

Deterministic cache key

50%

100%

channelData provided

100%

15%

Initialize PubNub Chat SDK for a Secured Application

Chat SDK initialization: import from @pubnub/chat, async Chat.init() factory, authKey (not token) for Access Manager, persistent userId, App Context prerequisite.

Criteria

Baseline

With context

Import from @pubnub/chat

100%

Async Chat.init factory

100%

authKey not token

100%

Persistent userId

100%

App Context mentioned

100%

Message Interaction Features for Chat App

Message reactions via toggleReaction with emoji name strings and reactions property, message threading via getThread/createThread/hasThread, thread.sendText for replies.

Criteria

Baseline

With context

toggleReaction method

100%

Reactions data structure

100%

getThread for existing

100%

hasThread check

100%

thread.sendText for reply

100%

createThread for new

66%

100%

15%

React Chat Room Component with Live Features

Channel connect/disconnect for real-time messages, sendText for sending, cleanup subscriptions on unmount, typing indicators with startTyping/stopTyping/onTyping, debounced typing signals.

Criteria

Baseline

With context

channel.connect for messages

100%

channel.sendText to send

100%

Unsubscribe in cleanup

100%

Typing via onTyping

100%

startTyping and stopTyping

100%

Debounced typing signal

100%

Evaluated: 6 months ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Initialize PubNub Chat SDK for a Secured Application Direct Messaging Service Module React Chat Room Component with Live Features Message Interaction Features for Chat App Channel Sidebar with Unread Badges